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# fiftyone.utils.annotations

Annotation utilities.

Copyright 2017-2026, Voxel51, Inc.
<br/>
[voxel51.com](https://voxel51.com/)
<br/>
<br/>

**Functions:**

| [`connect_to_api`](#fiftyone.utils.annotations.connect_to_api)([backend])                            | Returns an API instance connected to the annotation backend.                                                              |
|------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------|
| [`annotate`](#fiftyone.utils.annotations.annotate)(samples, anno_key[, label_schema, ...])           | Exports the samples and optional label field(s) to the given annotation backend.                                          |
| [`load_annotations`](#fiftyone.utils.annotations.load_annotations)(samples, anno_key[, ...])         | Downloads the labels from the given annotation run from the annotation backend and merges them into the collection.       |
| [`draw_labeled_images`](#fiftyone.utils.annotations.draw_labeled_images)(samples, output_dir[, ...]) | Renders annotated versions of the images in the collection with the specified label data overlaid to the given directory. |
| [`draw_labeled_image`](#fiftyone.utils.annotations.draw_labeled_image)(sample, outpath[, ...])       | Renders an annotated version of the sample's image with the specified label data overlaid to disk.                        |
| [`draw_labeled_videos`](#fiftyone.utils.annotations.draw_labeled_videos)(samples, output_dir[, ...]) | Renders annotated versions of the videos in the collection with the specified label data overlaid to the given directory. |
| [`draw_labeled_video`](#fiftyone.utils.annotations.draw_labeled_video)(sample, outpath[, ...])       | Renders an annotated version of the sample's video with the specified label data overlaid to disk.                        |

**Classes:**

| [`AnnotationBackendConfig`](#fiftyone.utils.annotations.AnnotationBackendConfig)(name, label_schema)   | Base class for configuring an [`AnnotationBackend`](#fiftyone.utils.annotations.AnnotationBackend) instances.                                                            |
|--------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [`AnnotationBackend`](#fiftyone.utils.annotations.AnnotationBackend)(\*args, \*\*kwargs)               | Base class for annotation backends.                                                                                                                                      |
| [`AnnotationResults`](#fiftyone.utils.annotations.AnnotationResults)(samples, config, anno_key, ...)   | Base class for storing the intermediate results of an annotation run that has been initiated and is waiting for its results to be merged back into the FiftyOne dataset. |
| [`AnnotationAPI`](#fiftyone.utils.annotations.AnnotationAPI)()                                         | Base class for APIs that connect to annotation backends.                                                                                                                 |
| [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig)(d)                                              | Configuration class that controls the look-and-feel of the annotations rendered on images/videos.                                                                        |

### fiftyone.utils.annotations.connect_to_api(backend=None, \*\*kwargs)

Returns an API instance connected to the annotation backend.

Some annotation backends may not expose this functionality.

* **Parameters:**
  * **backend** (*None*) – the annotation backend to use. The supported values are
    `fiftyone.annotation_config.backends.keys()` and the default
    is `fiftyone.annotation_config.default_backend`
  * **\*\*kwargs** – keyword arguments for the [`AnnotationBackendConfig`](#fiftyone.utils.annotations.AnnotationBackendConfig)
    subclass of the backend being used
* **Returns:**
  an [`AnnotationAPI`](#fiftyone.utils.annotations.AnnotationAPI)

### fiftyone.utils.annotations.annotate(samples, anno_key, label_schema=None, label_field=None, label_type=None, classes=None, attributes=True, mask_targets=None, allow_additions=True, allow_deletions=True, allow_label_edits=True, allow_index_edits=True, allow_spatial_edits=True, media_field='filepath', backend=None, launch_editor=False, \*\*kwargs)

Exports the samples and optional label field(s) to the given
annotation backend.

The `backend` parameter controls which annotation backend to use.
Depending on the backend you use, you may want/need to provide extra
keyword arguments to this function for the constructor of the backend’s
[`AnnotationBackendConfig`](#fiftyone.utils.annotations.AnnotationBackendConfig) class.

The natively provided backends and their associated config classes are:

- `"cvat"`: [`fiftyone.utils.cvat.CVATBackendConfig`](fiftyone.utils.cvat.md#fiftyone.utils.cvat.CVATBackendConfig)
- `"labelstudio"`: [`fiftyone.utils.labelstudio.LabelStudioBackendConfig`](fiftyone.utils.labelstudio.md#fiftyone.utils.labelstudio.LabelStudioBackendConfig)
- `"labelbox"`: [`fiftyone.utils.labelbox.LabelboxBackendConfig`](fiftyone.utils.labelbox.md#fiftyone.utils.labelbox.LabelboxBackendConfig)

See [this page](../integrations/annotation.md#requesting-annotations) for more information about
using this method, including how to define label schemas and how to
configure login credentials for your annotation provider.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **anno_key** – a string key to use to refer to this annotation run
  * **label_schema** (*None*) – a dictionary defining the label schema to use.
    If this argument is provided, it takes precedence over the other
    schema-related arguments
  * **label_field** (*None*) – a string indicating a new or existing label field
    to annotate
  * **label_type** (*None*) – 

    a string indicating the type of labels to annotate.
    The possible values are:
    - `"classification"`: a single classification stored in
      [`fiftyone.core.labels.Classification`](fiftyone.core.labels.md#fiftyone.core.labels.Classification) fields
    - `"classifications"`: multilabel classifications stored in
      [`fiftyone.core.labels.Classifications`](fiftyone.core.labels.md#fiftyone.core.labels.Classifications) fields
    - `"detections"`: object detections stored in
      [`fiftyone.core.labels.Detections`](fiftyone.core.labels.md#fiftyone.core.labels.Detections) fields
    - `"instances"`: instance segmentations stored in
      [`fiftyone.core.labels.Detections`](fiftyone.core.labels.md#fiftyone.core.labels.Detections) fields with their
      [`mask`](fiftyone.core.labels.md#fiftyone.core.labels.Detection.mask) attributes
      populated
    - `"polylines"`: polylines stored in
      [`fiftyone.core.labels.Polylines`](fiftyone.core.labels.md#fiftyone.core.labels.Polylines) fields with their
      [`filled`](fiftyone.core.labels.md#fiftyone.core.labels.Polyline.filled)
      attributes set to `False`
    - `"polygons"`: polygons stored in
      [`fiftyone.core.labels.Polylines`](fiftyone.core.labels.md#fiftyone.core.labels.Polylines) fields with their
      [`filled`](fiftyone.core.labels.md#fiftyone.core.labels.Polyline.filled)
      attributes set to `True`
    - `"keypoints"`: keypoints stored in
      [`fiftyone.core.labels.Keypoints`](fiftyone.core.labels.md#fiftyone.core.labels.Keypoints) fields
    - `"segmentation"`: semantic segmentations stored in
      [`fiftyone.core.labels.Segmentation`](fiftyone.core.labels.md#fiftyone.core.labels.Segmentation) fields
    - `"scalar"`: scalar labels stored in
      [`fiftyone.core.fields.IntField`](fiftyone.core.fields.md#fiftyone.core.fields.IntField),
      [`fiftyone.core.fields.FloatField`](fiftyone.core.fields.md#fiftyone.core.fields.FloatField),
      [`fiftyone.core.fields.StringField`](fiftyone.core.fields.md#fiftyone.core.fields.StringField), or
      [`fiftyone.core.fields.BooleanField`](fiftyone.core.fields.md#fiftyone.core.fields.BooleanField) fields

    All new label fields must have their type specified via this
    argument or in `label_schema`. Note that annotation backends may
    not support all label types
  * **classes** (*None*) – a list of strings indicating the class options for
    `label_field` or all fields in `label_schema` without classes
    specified. All new label fields must have a class list provided via
    one of the supported methods. For existing label fields, if classes
    are not provided by this argument nor `label_schema`, the
    observed labels on your dataset are used
  * **attributes** (*True*) – 

    specifies the label attributes of each label field
    to include (other than their `label`, which is always included)
    in the annotation export. Can be any of the following:
    - `True`: export all label attributes
    - `False`: don’t export any custom label attributes
    - an attribute or list of attributes to export
    - a dict mapping attribute names to dicts specifying the details
      of the attribute field

    If a `label_schema` is also provided, this parameter determines
    which attributes are included for all fields that do not explicitly
    define their per-field attributes (in addition to any per-class
    attributes)
  * **mask_targets** (*None*) – a dict mapping pixel values (2D masks) or RGB hex
    strings (3D masks) to semantic label strings. Only applicable when
    annotating semantic segmentations. All new label fields must have
    mask targets provided via one of the supported methods. For
    existing label fields, if mask targets are not provided by this
    argument nor `label_schema`, any applicable mask targets stored
    on your dataset will be used, if available
  * **allow_additions** (*True*) – whether to allow new labels to be added. Only
    applicable when editing existing label fields
  * **allow_deletions** (*True*) – whether to allow labels to be deleted. Only
    applicable when editing existing label fields
  * **allow_label_edits** (*True*) – whether to allow the `label` attribute of
    existing labels to be modified. Only applicable when editing
    existing fields with `label` attributes
  * **allow_index_edits** (*True*) – whether to allow the `index` attribute of
    existing video tracks to be modified. Only applicable when editing
    existing frame fields with `index` attributes
  * **allow_spatial_edits** (*True*) – whether to allow edits to the spatial
    properties (bounding boxes, vertices, keypoints, masks, etc) of
    labels. Only applicable when editing existing spatial label fields
  * **media_field** ( *"filepath"*) – the field containing the paths to the
    media files to upload
  * **backend** (*None*) – the annotation backend to use. The supported values are
    `fiftyone.annotation_config.backends.keys()` and the default
    is `fiftyone.annotation_config.default_backend`
  * **launch_editor** (*False*) – whether to launch the annotation backend’s
    editor after uploading the samples
  * **\*\*kwargs** – keyword arguments for the [`AnnotationBackendConfig`](#fiftyone.utils.annotations.AnnotationBackendConfig)
    subclass of the backend being used
* **Returns:**
  an [`AnnotationResults`](#fiftyone.utils.annotations.AnnotationResults)

### fiftyone.utils.annotations.load_annotations(samples, anno_key, dest_field=None, unexpected='prompt', cleanup=False, progress=None, \*\*kwargs)

Downloads the labels from the given annotation run from the annotation
backend and merges them into the collection.

See [this page](../integrations/annotation.md#loading-annotations) for more information about
using this method to import annotations that you have scheduled by calling
[`annotate()`](#fiftyone.utils.annotations.annotate).

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **anno_key** – an annotation key
  * **dest_field** (*None*) – an optional name of a new destination field
    into which to load the annotations, or a dict mapping field names
    in the run’s label schema to new destination field names
  * **unexpected** ( *"prompt"*) – 

    how to deal with any unexpected labels that
    don’t match the run’s label schema when importing. The supported
    values are:
    - `"prompt"`: present an interactive prompt to direct/discard
      unexpected labels
    - `"ignore"`: automatically ignore any unexpected labels
    - `"keep"`: automatically keep all unexpected labels in a field
      whose name matches the label type
    - `"return"`: return a dict containing all unexpected labels,
      or `None` if there aren’t any
  * **cleanup** (*False*) – whether to delete any information regarding this run
    from the annotation backend after loading the annotations
  * **progress** (*None*) – whether to render a progress bar (True/False), use the
    default value `fiftyone.config.show_progress_bars` (None), or a
    progress callback function to invoke instead
  * **\*\*kwargs** – keyword arguments for the run’s
    [`fiftyone.core.annotation.AnnotationMethodConfig.load_credentials()`](fiftyone.core.annotation.md#fiftyone.core.annotation.AnnotationMethodConfig.load_credentials)
    method
* **Returns:**
  `None`, unless `unexpected=="return"` and unexpected labels are
  found, in which case a dict containing the extra labels is returned

### *class* fiftyone.utils.annotations.AnnotationBackendConfig(name, label_schema, media_field='filepath', \*\*kwargs)

Bases: [`AnnotationMethodConfig`](fiftyone.core.annotation.md#fiftyone.core.annotation.AnnotationMethodConfig)

Base class for configuring an [`AnnotationBackend`](#fiftyone.utils.annotations.AnnotationBackend) instances.

Subclasses are free to define additional keyword arguments if they desire.

* **Parameters:**
  * **name** – the name of the backend
  * **label_schema** – a dictionary containing the description of label fields,
    classes and attributes to annotate
  * **media_field** ( *"filepath"*) – string field name containing the paths to
    media files on disk to upload
  * **\*\*kwargs** – any leftover keyword arguments after subclasses have done
    their parsing

**Attributes:**

| [`method`](#fiftyone.utils.annotations.AnnotationBackendConfig.method)   | The name of the annotation backend.                     |
|--------------------------------------------------------------------------|---------------------------------------------------------|
| [`cls`](#fiftyone.utils.annotations.AnnotationBackendConfig.cls)         | The fully-qualified name of this `BaseRunConfig` class. |
| [`run_cls`](#fiftyone.utils.annotations.AnnotationBackendConfig.run_cls) | The `BaseRun` class associated with this config.        |
| [`type`](#fiftyone.utils.annotations.AnnotationBackendConfig.type)       | The type of run.                                        |

**Methods:**

| [`load_credentials`](#fiftyone.utils.annotations.AnnotationBackendConfig.load_credentials)(\*\*kwargs)                           | Loads any necessary credentials from the given keyword arguments or the relevant FiftyOne config.                                               |
|----------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|
| [`serialize`](#fiftyone.utils.annotations.AnnotationBackendConfig.serialize)(\*args, \*\*kwargs)                                 | Serializes the object into a dictionary.                                                                                                        |
| [`attributes`](#fiftyone.utils.annotations.AnnotationBackendConfig.attributes)()                                                 | Returns the list of class attributes that will be serialized by [`serialize()`](#fiftyone.utils.annotations.AnnotationBackendConfig.serialize). |
| [`base_config_cls`](#fiftyone.utils.annotations.AnnotationBackendConfig.base_config_cls)(type)                                   | Returns the config class for the given run type.                                                                                                |
| [`build`](#fiftyone.utils.annotations.AnnotationBackendConfig.build)()                                                           | Builds the `BaseRun` instance associated with this config.                                                                                      |
| [`builder`](#fiftyone.utils.annotations.AnnotationBackendConfig.builder)()                                                       | Returns a ConfigBuilder instance for this class.                                                                                                |
| [`copy`](#fiftyone.utils.annotations.AnnotationBackendConfig.copy)()                                                             | Returns a deep copy of the object.                                                                                                              |
| [`custom_attributes`](#fiftyone.utils.annotations.AnnotationBackendConfig.custom_attributes)([dynamic, private])                 | Returns a customizable list of class attributes.                                                                                                |
| [`default`](#fiftyone.utils.annotations.AnnotationBackendConfig.default)()                                                       | Returns the default config instance.                                                                                                            |
| [`from_dict`](#fiftyone.utils.annotations.AnnotationBackendConfig.from_dict)(d)                                                  | Constructs a `BaseRunConfig` from a serialized JSON dict representation of it.                                                                  |
| [`from_json`](#fiftyone.utils.annotations.AnnotationBackendConfig.from_json)(path, \*args, \*\*kwargs)                           | Constructs a Serializable object from a JSON file.                                                                                              |
| [`from_kwargs`](#fiftyone.utils.annotations.AnnotationBackendConfig.from_kwargs)(\*\*kwargs)                                     | Constructs a Config object from keyword arguments.                                                                                              |
| [`from_str`](#fiftyone.utils.annotations.AnnotationBackendConfig.from_str)(s, \*args, \*\*kwargs)                                | Constructs a Serializable object from a JSON string.                                                                                            |
| [`get_class_name`](#fiftyone.utils.annotations.AnnotationBackendConfig.get_class_name)()                                         | Returns the fully-qualified class name string of this object.                                                                                   |
| [`load_default`](#fiftyone.utils.annotations.AnnotationBackendConfig.load_default)()                                             | Loads the default config instance from file.                                                                                                    |
| [`parse_array`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_array)(d, key[, default])                              | Parses a raw array attribute.                                                                                                                   |
| [`parse_bool`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_bool)(d, key[, default])                                | Parses a boolean value.                                                                                                                         |
| [`parse_categorical`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_categorical)(d, key, choices[, default])         | Parses a categorical JSON field, which must take a value from among the given choices.                                                          |
| [`parse_dict`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_dict)(d, key[, default])                                | Parses a dictionary attribute.                                                                                                                  |
| [`parse_int`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_int)(d, key[, default])                                  | Parses an integer attribute.                                                                                                                    |
| [`parse_mutually_exclusive_fields`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_mutually_exclusive_fields)(fields) | Parses a mutually exclusive dictionary of pre-parsed fields, which must contain exactly one field with a truthy value.                          |
| [`parse_number`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_number)(d, key[, default])                            | Parses a number attribute.                                                                                                                      |
| [`parse_object`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_object)(d, key, cls[, default])                       | Parses an object attribute.                                                                                                                     |
| [`parse_object_array`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_object_array)(d, key, cls[, default])           | Parses an array of objects.                                                                                                                     |
| [`parse_object_dict`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_object_dict)(d, key, cls[, default])             | Parses a dictionary whose values are objects.                                                                                                   |
| [`parse_path`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_path)(d, key[, default])                                | Parses a path attribute.                                                                                                                        |
| [`parse_raw`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_raw)(d, key[, default])                                  | Parses a raw (arbitrary) JSON field.                                                                                                            |
| [`parse_string`](#fiftyone.utils.annotations.AnnotationBackendConfig.parse_string)(d, key[, default])                            | Parses a string attribute.                                                                                                                      |
| [`to_str`](#fiftyone.utils.annotations.AnnotationBackendConfig.to_str)([pretty_print])                                           | Returns a string representation of this object.                                                                                                 |
| [`validate_all_or_nothing_fields`](#fiftyone.utils.annotations.AnnotationBackendConfig.validate_all_or_nothing_fields)(fields)   | Validates a dictionary of pre-parsed fields checking that either all or none of the fields have a truthy value.                                 |
| [`write_json`](#fiftyone.utils.annotations.AnnotationBackendConfig.write_json)(path[, pretty_print])                             | Serializes the object and writes it to disk.                                                                                                    |

#### *property* method

The name of the annotation backend.

#### load_credentials(\*\*kwargs)

Loads any necessary credentials from the given keyword arguments or
the relevant FiftyOne config.

* **Parameters:**
  **\*\*kwargs** – subclass-specific credentials

#### serialize(\*args, \*\*kwargs)

Serializes the object into a dictionary.

Serialization is applied recursively to all attributes in the object,
including element-wise serialization of lists and dictionary values.

* **Parameters:**
  **reflective** – whether to include reflective attributes when
  serializing the object. By default, this is False
* **Returns:**
  a JSON dictionary representation of the object

#### attributes()

Returns the list of class attributes that will be serialized by
[`serialize()`](#fiftyone.utils.annotations.AnnotationBackendConfig.serialize).

* **Returns:**
  a list of attributes

#### *static* base_config_cls(type)

Returns the config class for the given run type.

* **Parameters:**
  **type** – a `BaseRunConfig.type`
* **Returns:**
  a `BaseRunConfig` subclass

#### build()

Builds the `BaseRun` instance associated with this config.

* **Returns:**
  a `BaseRun` instance

#### *classmethod* builder()

Returns a ConfigBuilder instance for this class.

#### *property* cls

The fully-qualified name of this `BaseRunConfig` class.

#### copy()

Returns a deep copy of the object.

* **Returns:**
  a Serializable instance

#### custom_attributes(dynamic=False, private=False)

Returns a customizable list of class attributes.

By default, all attributes in vars(self) are returned, minus private
attributes (those starting with “_”).

* **Parameters:**
  * **dynamic** – whether to include dynamic properties, e.g., those defined
    by getter/setter methods or the `@property` decorator. By
    default, this is False
  * **private** – whether to include private properties, i.e., those
    starting with “_”. By default, this is False
* **Returns:**
  a list of class attributes

#### *classmethod* default()

Returns the default config instance.

By default, this method instantiates the class from an empty
dictionary, which will only succeed if all attributes are optional.
Otherwise, subclasses should override this method to provide the
desired default configuration.

#### *classmethod* from_dict(d)

Constructs a `BaseRunConfig` from a serialized JSON dict
representation of it.

* **Parameters:**
  **d** – a JSON dict
* **Returns:**
  a `BaseRunConfig`

#### *classmethod* from_json(path, \*args, \*\*kwargs)

Constructs a Serializable object from a JSON file.

Subclasses may override this method, but, by default, this method
simply reads the JSON and calls from_dict(), which subclasses must
implement.

* **Parameters:**
  * **path** – the path to the JSON file on disk
  * **\*args** – optional positional arguments for `self.from_dict()`
  * **\*\*kwargs** – optional keyword arguments for `self.from_dict()`
* **Returns:**
  an instance of the Serializable class

#### *classmethod* from_kwargs(\*\*kwargs)

Constructs a Config object from keyword arguments.

* **Parameters:**
  **\*\*kwargs** – keyword arguments that define the fields expected by cls
* **Returns:**
  an instance of cls

#### *classmethod* from_str(s, \*args, \*\*kwargs)

Constructs a Serializable object from a JSON string.

Subclasses may override this method, but, by default, this method
simply parses the string and calls from_dict(), which subclasses must
implement.

* **Parameters:**
  * **s** – a JSON string representation of a Serializable object
  * **\*args** – optional positional arguments for `self.from_dict()`
  * **\*\*kwargs** – optional keyword arguments for `self.from_dict()`
* **Returns:**
  an instance of the Serializable class

#### *classmethod* get_class_name()

Returns the fully-qualified class name string of this object.

#### *classmethod* load_default()

Loads the default config instance from file.

Subclasses must implement this method if they intend to support
default instances.

#### *static* parse_array(d, key, default=<eta.core.config.NoDefault object>)

Parses a raw array attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default list to return if key is not present
* **Returns:**
  a list of raw (untouched) values
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_bool(d, key, default=<eta.core.config.NoDefault object>)

Parses a boolean value.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default bool to return if key is not present
* **Returns:**
  True/False
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_categorical(d, key, choices, default=<eta.core.config.NoDefault object>)

Parses a categorical JSON field, which must take a value from among
the given choices.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **choices** – either an iterable of possible values or an enum-like
    class whose attributes define the possible values
  * **default** – a default value to return if key is not present
* **Returns:**
  the raw (untouched) value of the given field, which is equal to a
  value from `choices`
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the key was present in the dictionary but its value
      was not an allowed choice, or if no default value was provided
      and the key was not found in the dictionary

#### *static* parse_dict(d, key, default=<eta.core.config.NoDefault object>)

Parses a dictionary attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default dict to return if key is not present
* **Returns:**
  a dictionary
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_int(d, key, default=<eta.core.config.NoDefault object>)

Parses an integer attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default integer value to return if key is not present
* **Returns:**
  an int
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_mutually_exclusive_fields(fields)

Parses a mutually exclusive dictionary of pre-parsed fields, which
must contain exactly one field with a truthy value.

* **Parameters:**
  **fields** – a dictionary of pre-parsed fields
* **Returns:**
  the (field, value) that was set
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if zero or more than one truthy value was found

#### *static* parse_number(d, key, default=<eta.core.config.NoDefault object>)

Parses a number attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default numeric value to return if key is not present
* **Returns:**
  a number (e.g. int, float)
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_object(d, key, cls, default=<eta.core.config.NoDefault object>)

Parses an object attribute.

The value of d[key] can be either an instance of cls or a serialized
dict from an instance of cls.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **cls** – the class of d[key]
  * **default** – a default cls instance to return if key is not present
* **Returns:**
  an instance of cls
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_object_array(d, key, cls, default=<eta.core.config.NoDefault object>)

Parses an array of objects.

The values in d[key] can be either instances of cls or serialized
dicts from instances of cls.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **cls** – the class of the elements of list d[key]
  * **default** – the default list to return if key is not present
* **Returns:**
  a list of cls instances
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_object_dict(d, key, cls, default=<eta.core.config.NoDefault object>)

Parses a dictionary whose values are objects.

The values in d[key] can be either instances of cls or serialized
dicts from instances of cls.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **cls** – the class of the values of dictionary d[key]
  * **default** – the default dict of cls instances to return if key is not
    present
* **Returns:**
  a dictionary whose values are cls instances
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_path(d, key, default=<eta.core.config.NoDefault object>)

Parses a path attribute.

The path is converted to an absolute path if necessary via
`os.path.abspath(os.path.expanduser(value))`.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default string to return if key is not present
* **Returns:**
  a path string
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_raw(d, key, default=<eta.core.config.NoDefault object>)

Parses a raw (arbitrary) JSON field.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default value to return if key is not present
* **Returns:**
  the raw (untouched) value of the given field
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if no default value was provided and the key was not
      found in the dictionary

#### *static* parse_string(d, key, default=<eta.core.config.NoDefault object>)

Parses a string attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default string to return if key is not present
* **Returns:**
  a string
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *property* run_cls

The `BaseRun` class associated with this config.

#### to_str(pretty_print=True, \*\*kwargs)

Returns a string representation of this object.

* **Parameters:**
  * **pretty_print** – whether to render the JSON in human readable format
    with newlines and indentations. By default, this is True
  * **\*\*kwargs** – optional keyword arguments for `self.serialize()`
* **Returns:**
  a string representation of the object

#### *property* type

The type of run.

#### *static* validate_all_or_nothing_fields(fields)

Validates a dictionary of pre-parsed fields checking that either
all or none of the fields have a truthy value.

* **Parameters:**
  **fields** – a dictionary of pre-parsed fields
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if some values are truth and some are not

#### write_json(path, pretty_print=False, \*\*kwargs)

Serializes the object and writes it to disk.

* **Parameters:**
  * **path** – the output path
  * **pretty_print** – whether to render the JSON in human readable format
    with newlines and indentations. By default, this is False
  * **\*\*kwargs** – optional keyword arguments for `self.serialize()`

### *class* fiftyone.utils.annotations.AnnotationBackend(\*args, \*\*kwargs)

Bases: [`AnnotationMethod`](fiftyone.core.annotation.md#fiftyone.core.annotation.AnnotationMethod)

Base class for annotation backends.

* **Parameters:**
  **config** – an [`AnnotationBackendConfig`](#fiftyone.utils.annotations.AnnotationBackendConfig)

**Attributes:**

| [`supported_media_types`](#fiftyone.utils.annotations.AnnotationBackend.supported_media_types)               | The list of media types that this backend supports.                                                   |
|--------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------|
| [`supported_label_types`](#fiftyone.utils.annotations.AnnotationBackend.supported_label_types)               | The list of label types supported by the backend.                                                     |
| [`supported_scalar_types`](#fiftyone.utils.annotations.AnnotationBackend.supported_scalar_types)             | The list of scalar field types supported by the backend.                                              |
| [`supported_attr_types`](#fiftyone.utils.annotations.AnnotationBackend.supported_attr_types)                 | The list of attribute types supported by the backend.                                                 |
| [`supports_clips_views`](#fiftyone.utils.annotations.AnnotationBackend.supports_clips_views)                 | Whether this backend supports annotating clips views.                                                 |
| [`supports_keyframes`](#fiftyone.utils.annotations.AnnotationBackend.supports_keyframes)                     | Whether this backend supports uploading only keyframes when editing existing video track annotations. |
| [`supports_video_sample_fields`](#fiftyone.utils.annotations.AnnotationBackend.supports_video_sample_fields) | Whether this backend supports annotating video labels at a sample-level.                              |
| [`requires_label_schema`](#fiftyone.utils.annotations.AnnotationBackend.requires_label_schema)               | Whether this backend requires a pre-defined label schema for its annotation runs.                     |

**Methods:**

| [`recommend_attr_tool`](#fiftyone.utils.annotations.AnnotationBackend.recommend_attr_tool)(name, value)            | Recommends an attribute tool for an attribute with the given name and value.                       |
|--------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------|
| [`requires_attr_values`](#fiftyone.utils.annotations.AnnotationBackend.requires_attr_values)(attr_type)            | Determines whether the list of possible values are required for attributes of the given type.      |
| [`connect_to_api`](#fiftyone.utils.annotations.AnnotationBackend.connect_to_api)()                                 | Returns an API instance connected to the annotation backend.                                       |
| [`use_api`](#fiftyone.utils.annotations.AnnotationBackend.use_api)(api)                                            | Registers an API instance to use for subsequent operations.                                        |
| [`upload_annotations`](#fiftyone.utils.annotations.AnnotationBackend.upload_annotations)(samples, anno_key[, ...]) | Uploads the samples and relevant existing labels from the label schema to the annotation backend.  |
| [`download_annotations`](#fiftyone.utils.annotations.AnnotationBackend.download_annotations)(results)              | Downloads the annotations from the annotation backend for the given results.                       |
| [`get_fields`](#fiftyone.utils.annotations.AnnotationBackend.get_fields)(samples, anno_key)                        | Gets the fields that were involved in the given run.                                               |
| [`cleanup`](#fiftyone.utils.annotations.AnnotationBackend.cleanup)(samples, key)                                   | Cleans up the results of the run with the given key from the collection.                           |
| [`delete_run`](#fiftyone.utils.annotations.AnnotationBackend.delete_run)(samples, key[, cleanup])                  | Deletes the results associated with the given run key from the collection.                         |
| [`delete_runs`](#fiftyone.utils.annotations.AnnotationBackend.delete_runs)(samples[, cleanup])                     | Deletes all runs from the collection.                                                              |
| [`ensure_requirements`](#fiftyone.utils.annotations.AnnotationBackend.ensure_requirements)()                       | Ensures that any necessary packages to execute this run are installed.                             |
| [`ensure_usage_requirements`](#fiftyone.utils.annotations.AnnotationBackend.ensure_usage_requirements)()           | Ensures that any necessary packages to use existing results for this run are installed.            |
| [`from_config`](#fiftyone.utils.annotations.AnnotationBackend.from_config)(config)                                 | Instantiates a Configurable class from a <cls>Config instance.                                     |
| [`from_dict`](#fiftyone.utils.annotations.AnnotationBackend.from_dict)(d)                                          | Instantiates a Configurable class from a <cls>Config dict.                                         |
| [`from_json`](#fiftyone.utils.annotations.AnnotationBackend.from_json)(json_path)                                  | Instantiates a Configurable class from a <cls>Config JSON file.                                    |
| [`from_kwargs`](#fiftyone.utils.annotations.AnnotationBackend.from_kwargs)(\*\*kwargs)                             | Instantiates a Configurable class from keyword arguments defining the attributes of a <cls>Config. |
| [`get_run_info`](#fiftyone.utils.annotations.AnnotationBackend.get_run_info)(samples, key)                         | Gets the `BaseRunInfo` for the given key on the collection.                                        |
| [`has_cached_run_results`](#fiftyone.utils.annotations.AnnotationBackend.has_cached_run_results)(samples, key)     | Determines whether `BaseRunResults` for the given key are cached on the collection.                |
| [`list_runs`](#fiftyone.utils.annotations.AnnotationBackend.list_runs)(samples[, type, method])                    | Returns the list of run keys on the given collection.                                              |
| [`load_run_results`](#fiftyone.utils.annotations.AnnotationBackend.load_run_results)(samples, key[, cache, ...])   | Loads the `BaseRunResults` for the given key on the collection.                                    |
| [`load_run_view`](#fiftyone.utils.annotations.AnnotationBackend.load_run_view)(samples, key[, select_fields])      | Loads the view on which the specified run was performed.                                           |
| [`parse`](#fiftyone.utils.annotations.AnnotationBackend.parse)(class_name[, module_name])                          | Parses a Configurable subclass name string.                                                        |
| [`register_run`](#fiftyone.utils.annotations.AnnotationBackend.register_run)(samples, key[, overwrite, cleanup])   | Registers a run of this method under the given key on the given collection.                        |
| [`rename`](#fiftyone.utils.annotations.AnnotationBackend.rename)(samples, key, new_key)                            | Performs any necessary operations required to rename this run's key.                               |
| [`run_info_cls`](#fiftyone.utils.annotations.AnnotationBackend.run_info_cls)()                                     | The `BaseRunInfo` class associated with this class.                                                |
| [`save_run_info`](#fiftyone.utils.annotations.AnnotationBackend.save_run_info)(samples, run_info[, ...])           | Saves the run information on the collection.                                                       |
| [`save_run_results`](#fiftyone.utils.annotations.AnnotationBackend.save_run_results)(samples, key, run_results)    | Saves the run results on the collection.                                                           |
| [`update_run_config`](#fiftyone.utils.annotations.AnnotationBackend.update_run_config)(samples, key, config)       | Updates the `BaseRunConfig` for the given run on the collection.                                   |
| [`update_run_key`](#fiftyone.utils.annotations.AnnotationBackend.update_run_key)(samples, key, new_key)            | Replaces the key for the given run with a new key.                                                 |
| [`validate`](#fiftyone.utils.annotations.AnnotationBackend.validate)(config)                                       | Validates that the given config is an instance of <cls>Config.                                     |
| [`validate_run`](#fiftyone.utils.annotations.AnnotationBackend.validate_run)(samples, key[, overwrite])            | Validates that the collection can accept this run.                                                 |

#### *property* supported_media_types

The list of media types that this backend supports.

For example, CVAT supports `["image", "video"]`.

#### *property* supported_label_types

The list of label types supported by the backend.

Backends may support any subset of the following label types:

- `"classification"`
- `"classifications"`
- `"detection"`
- `"detections"`
- `"instance"`
- `"instances"`
- `"polyline"`
- `"polylines"`
- `"polygon"`
- `"polygons"`
- `"keypoint"`
- `"keypoints"`
- `"segmentation"`
- `"scalar"`

#### *property* supported_scalar_types

The list of scalar field types supported by the backend.

For example, CVAT supports the following types:

- [`fiftyone.core.fields.IntField`](fiftyone.core.fields.md#fiftyone.core.fields.IntField)
- [`fiftyone.core.fields.FloatField`](fiftyone.core.fields.md#fiftyone.core.fields.FloatField)
- [`fiftyone.core.fields.StringField`](fiftyone.core.fields.md#fiftyone.core.fields.StringField)
- [`fiftyone.core.fields.BooleanField`](fiftyone.core.fields.md#fiftyone.core.fields.BooleanField)

#### *property* supported_attr_types

The list of attribute types supported by the backend.

This list defines the valid string values for the `type` field of
an attributes dict of the label schema provided to the backend.

For example, CVAT supports `["text", "select", "radio", "checkbox"]`.

#### *property* supports_clips_views

Whether this backend supports annotating clips views.

#### *property* supports_keyframes

Whether this backend supports uploading only keyframes when editing
existing video track annotations.

#### *property* supports_video_sample_fields

Whether this backend supports annotating video labels at a
sample-level.

#### *property* requires_label_schema

Whether this backend requires a pre-defined label schema for its
annotation runs.

#### recommend_attr_tool(name, value)

Recommends an attribute tool for an attribute with the given name
and value.

For example, a backend may recommend a tool as follows for a boolean
value:

```default
{
    "type": "radio",
    "values": [False, True],
}
```

or a tool as follows for a generic value:

```default
{"type": "text"}
```

* **Parameters:**
  * **name** – the name of the attribute
  * **value** – the attribute value, which may be `None`
* **Returns:**
  an attribute type dict

#### requires_attr_values(attr_type)

Determines whether the list of possible values are required for
attributes of the given type.

* **Parameters:**
  **attr_type** – the attribute type string
* **Returns:**
  True/False

#### connect_to_api()

Returns an API instance connected to the annotation backend.

Existing API instances are reused, if available.

Some annotation backends may not expose this functionality.

* **Returns:**
  an [`AnnotationAPI`](#fiftyone.utils.annotations.AnnotationAPI), or `None` if the backend does not
  expose an API

#### use_api(api)

Registers an API instance to use for subsequent operations.

* **Parameters:**
  **api** – an [`AnnotationAPI`](#fiftyone.utils.annotations.AnnotationAPI)

#### upload_annotations(samples, anno_key, launch_editor=False)

Uploads the samples and relevant existing labels from the label
schema to the annotation backend.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **anno_key** – the annotation key
  * **launch_editor** (*False*) – whether to launch the annotation backend’s
    editor after uploading the samples
* **Returns:**
  an [`AnnotationResults`](#fiftyone.utils.annotations.AnnotationResults)

#### download_annotations(results)

Downloads the annotations from the annotation backend for the given
results.

The returned labels should be represented as either scalar values or
[`fiftyone.core.labels.Label`](fiftyone.core.labels.md#fiftyone.core.labels.Label) instances.

For image datasets, the return dictionary should have the following
nested structure:

```default
# Scalar fields
results[label_type][sample_id] = scalar

# Label fields
results[label_type][sample_id][label_id] = label
```

For video datasets, the returned labels dictionary should have the
following nested structure:

```default
# Scalar fields
results[label_type][sample_id][frame_id] = scalar

# Label fields
results[label_type][sample_id][frame_id][label_id] = label
```

The valid values for `label_type` are:

- “classifications”: single or multilabel classifications
- “detections”: detections or instance segmentations
- “polylines”: polygons or polylines
- “segmentation”: semantic segmentations
- “scalar”: scalar values

* **Parameters:**
  **results** – an [`AnnotationResults`](#fiftyone.utils.annotations.AnnotationResults)
* **Returns:**
  the labels results dict

#### get_fields(samples, anno_key)

Gets the fields that were involved in the given run.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
* **Returns:**
  a list of fields

#### cleanup(samples, key)

Cleans up the results of the run with the given key from the
collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key

#### *classmethod* delete_run(samples, key, cleanup=True)

Deletes the results associated with the given run key from the
collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **cleanup** (*True*) – whether to execute the run’s
    `BaseRun.cleanup()` method

#### *classmethod* delete_runs(samples, cleanup=True)

Deletes all runs from the collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **cleanup** (*True*) – whether to execute the run’s
    `BaseRun.cleanup()` methods

#### ensure_requirements()

Ensures that any necessary packages to execute this run are
installed.

Runs should respect `fiftyone.config.requirement_error_level` when
handling errors.

#### ensure_usage_requirements()

Ensures that any necessary packages to use existing results for this
run are installed.

Runs should respect `fiftyone.config.requirement_error_level` when
handling errors.

#### *classmethod* from_config(config)

Instantiates a Configurable class from a <cls>Config instance.

#### *classmethod* from_dict(d)

Instantiates a Configurable class from a <cls>Config dict.

* **Parameters:**
  **d** – a dict to construct a <cls>Config
* **Returns:**
  an instance of cls

#### *classmethod* from_json(json_path)

Instantiates a Configurable class from a <cls>Config JSON file.

* **Parameters:**
  **json_path** – path to a JSON file for type <cls>Config
* **Returns:**
  an instance of cls

#### *classmethod* from_kwargs(\*\*kwargs)

Instantiates a Configurable class from keyword arguments defining
the attributes of a <cls>Config.

* **Parameters:**
  **\*\*kwargs** – keyword arguments that define the fields of a
  <cls>Config dict
* **Returns:**
  an instance of cls

#### *classmethod* get_run_info(samples, key)

Gets the `BaseRunInfo` for the given key on the collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
* **Returns:**
  a `BaseRunInfo`

#### *classmethod* has_cached_run_results(samples, key)

Determines whether `BaseRunResults` for the given key are
cached on the collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
* **Returns:**
  True/False

#### *classmethod* list_runs(samples, type=None, method=None, \*\*kwargs)

Returns the list of run keys on the given collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **type** (*None*) – 

    a specific run type to match, which can be:
    - a string [`fiftyone.core.runs.BaseRunConfig.type`](fiftyone.core.runs.md#fiftyone.core.runs.BaseRunConfig.type)
    - a [`fiftyone.core.runs.BaseRun`](fiftyone.core.runs.md#fiftyone.core.runs.BaseRun) class or its
      fully-qualified class name string
  * **method** (*None*) – a specific
    [`fiftyone.core.runs.BaseRunConfig.method`](fiftyone.core.runs.md#fiftyone.core.runs.BaseRunConfig.method) string to match
  * **\*\*kwargs** – optional config parameters to match
* **Returns:**
  a list of run keys

#### *classmethod* load_run_results(samples, key, cache=True, load_view=True, \*\*kwargs)

Loads the `BaseRunResults` for the given key on the
collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **cache** (*True*) – whether to cache the results on the collection
  * **load_view** (*True*) – whether to load the run view in the results
    (True) or the full dataset (False)
  * **\*\*kwargs** – keyword arguments for the run’s
    `BaseRunConfig.load_credentials()` method
* **Returns:**
  a `BaseRunResults`, or None if the run did not save results

#### *classmethod* load_run_view(samples, key, select_fields=False)

Loads the view on which the specified run was performed.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **select_fields** (*False*) – whether to exclude fields involved in other
    runs of the same type
* **Returns:**
  a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)

#### *static* parse(class_name, module_name=None)

Parses a Configurable subclass name string.

Assumes both the Configurable class and the Config class are defined
in the same module. The module containing the classes will be loaded
if necessary.

* **Parameters:**
  * **class_name** – a string containing the name of the Configurable class,
    e.g. “ClassName”, or a fully-qualified class name, e.g.
    “eta.core.config.ClassName”
  * **module_name** – a string containing the fully-qualified module name,
    e.g. “eta.core.config”, or None if class_name includes the
    module name. Set module_name = \_\_name_\_ to load a class from
    the calling module
* **Returns:**
  the Configurable class
  config_cls: the Config class associated with cls
* **Return type:**
  [cls](fiftyone.brain.internal.core.elasticsearch.md#fiftyone.brain.internal.core.elasticsearch.ElasticsearchSimilarityConfig.cls)

#### register_run(samples, key, overwrite=True, cleanup=True)

Registers a run of this method under the given key on the given
collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **overwrite** (*True*) – whether to allow overwriting an existing run of
    the same type
  * **cleanup** (*True*) – whether to execute an existing run’s
    `BaseRun.cleanup()` method when overwriting it

#### rename(samples, key, new_key)

Performs any necessary operations required to rename this run’s key.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **new_key** – a new run key

#### *classmethod* run_info_cls()

The `BaseRunInfo` class associated with this class.

#### *classmethod* save_run_info(samples, run_info, overwrite=True, cleanup=True)

Saves the run information on the collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **run_info** – a `BaseRunInfo`
  * **overwrite** (*True*) – whether to overwrite an existing run with the
    same key
  * **cleanup** (*True*) – whether to execute an existing run’s
    `BaseRun.cleanup()` method when overwriting it

#### *classmethod* save_run_results(samples, key, run_results, overwrite=True, cache=True)

Saves the run results on the collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **run_results** – a `BaseRunResults`, or None
  * **overwrite** (*True*) – whether to overwrite an existing result with the
    same key
  * **cache** (*True*) – whether to cache the results on the collection

#### *classmethod* update_run_config(samples, key, config)

Updates the `BaseRunConfig` for the given run on the
collection.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **config** – a `BaseRunConfig`

#### *classmethod* update_run_key(samples, key, new_key)

Replaces the key for the given run with a new key.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **new_key** – a new run key

#### *classmethod* validate(config)

Validates that the given config is an instance of <cls>Config.

* **Raises:**
  **ConfigurableError** – if config is not an instance of <cls>Config

#### validate_run(samples, key, overwrite=True)

Validates that the collection can accept this run.

The run may be invalid if, for example, a run of a different type has
already been run under the same key and thus overwriting it would cause
ambiguity on how to cleanup the results.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **key** – a run key
  * **overwrite** (*True*) – whether to allow overwriting an existing run of
    the same type
* **Raises:**
  **ValueError** – if the run is invalid

### *class* fiftyone.utils.annotations.AnnotationResults(samples, config, anno_key, id_map, backend=None)

Bases: [`AnnotationResults`](fiftyone.core.annotation.md#fiftyone.core.annotation.AnnotationResults)

Base class for storing the intermediate results of an annotation run
that has been initiated and is waiting for its results to be merged back
into the FiftyOne dataset.

The `id_map` dictionary must record the IDs of any **existing labels**
that are being edited by the annotation run. Any new label fields do not
need to have keys in this dictionary.

For image datasets, `id_map` should have the following format:

```default
{
    "<label-field>": {
        "<sample-id>": "label-id" or ["label-id", ...],
        ...
    },
    ...
}
```

For video datasets, `id_map` should have the following format:

```default
{
    "<label-field>": {
        "<sample-id>": {
            "<frame-id>": label-id" or ["label-id", ...],
            ...
        },
        ...
    },
    ...
}
```

When editing scalar fields, set the dictionary values corresponding to
uploaded scalars to `True` (since scalars do not have IDs).

If a particular sample or frame was included in the annotation run but no
labels/scalars were uploaded for editing, the corresponding entry in
`id_map` can be either missing or have a value of `None`.

#### NOTE
This class is serialized for storage in the database by calling
[`serialize()`](#fiftyone.utils.annotations.AnnotationResults.serialize).

Any public attributes of this class are included in the representation
generated by [`serialize()`](#fiftyone.utils.annotations.AnnotationResults.serialize), so they must be JSON serializable.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **config** – an [`AnnotationBackendConfig`](#fiftyone.utils.annotations.AnnotationBackendConfig)
  * **anno_key** – the annotation key
  * **id_map** – a dictionary recording the existing label IDs, in the format
    described above
  * **backend** (*None*) – an [`AnnotationBackend`](#fiftyone.utils.annotations.AnnotationBackend)

**Methods:**

| [`connect_to_api`](#fiftyone.utils.annotations.AnnotationResults.connect_to_api)()                         | Returns an API instance connected to the annotation backend.                                                                              |
|------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------|
| [`use_api`](#fiftyone.utils.annotations.AnnotationResults.use_api)(api)                                    | Registers an API instance to use for subsequent operations.                                                                               |
| [`launch_editor`](#fiftyone.utils.annotations.AnnotationResults.launch_editor)()                           | Launches the annotation backend's editor for these results.                                                                               |
| [`cleanup`](#fiftyone.utils.annotations.AnnotationResults.cleanup)()                                       | Deletes all information for this run from the annotation backend.                                                                         |
| [`attributes`](#fiftyone.utils.annotations.AnnotationResults.attributes)()                                 | Returns the list of class attributes that will be serialized by [`serialize()`](#fiftyone.utils.annotations.AnnotationResults.serialize). |
| [`base_results_cls`](#fiftyone.utils.annotations.AnnotationResults.base_results_cls)(type)                 | Returns the results class for the given run type.                                                                                         |
| [`copy`](#fiftyone.utils.annotations.AnnotationResults.copy)()                                             | Returns a deep copy of the object.                                                                                                        |
| [`custom_attributes`](#fiftyone.utils.annotations.AnnotationResults.custom_attributes)([dynamic, private]) | Returns a customizable list of class attributes.                                                                                          |
| [`from_dict`](#fiftyone.utils.annotations.AnnotationResults.from_dict)(d, samples, config, key)            | Builds a `BaseRunResults` from a JSON dict representation of it.                                                                          |
| [`from_json`](#fiftyone.utils.annotations.AnnotationResults.from_json)(path, \*args, \*\*kwargs)           | Constructs a Serializable object from a JSON file.                                                                                        |
| [`from_str`](#fiftyone.utils.annotations.AnnotationResults.from_str)(s, \*args, \*\*kwargs)                | Constructs a Serializable object from a JSON string.                                                                                      |
| [`get_class_name`](#fiftyone.utils.annotations.AnnotationResults.get_class_name)()                         | Returns the fully-qualified class name string of this object.                                                                             |
| [`get_meta`](#fiftyone.utils.annotations.AnnotationResults.get_meta)()                                     | Small facts that DESCRIBE these results, stored beside the run so callers can read them without loading the results.                      |
| [`save`](#fiftyone.utils.annotations.AnnotationResults.save)()                                             | Saves the results to the database.                                                                                                        |
| [`save_config`](#fiftyone.utils.annotations.AnnotationResults.save_config)()                               | Saves these results config to the database.                                                                                               |
| [`serialize`](#fiftyone.utils.annotations.AnnotationResults.serialize)([reflective])                       | Serializes the object into a dictionary.                                                                                                  |
| [`to_str`](#fiftyone.utils.annotations.AnnotationResults.to_str)([pretty_print])                           | Returns a string representation of this object.                                                                                           |
| [`write_json`](#fiftyone.utils.annotations.AnnotationResults.write_json)(path[, pretty_print])             | Serializes the object and writes it to disk.                                                                                              |

**Attributes:**

| [`backend`](#fiftyone.utils.annotations.AnnotationResults.backend)   | The `BaseRun` for these results.                                                                                                                           |
|----------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [`cls`](#fiftyone.utils.annotations.AnnotationResults.cls)           | The fully-qualified name of this `BaseRunResults` class.                                                                                                   |
| [`config`](#fiftyone.utils.annotations.AnnotationResults.config)     | The `BaseRunConfig` for these results.                                                                                                                     |
| [`key`](#fiftyone.utils.annotations.AnnotationResults.key)           | The run key for these results.                                                                                                                             |
| [`samples`](#fiftyone.utils.annotations.AnnotationResults.samples)   | The [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection) associated with these results. |

#### connect_to_api()

Returns an API instance connected to the annotation backend.

Existing API instances are reused, if available.

Some annotation backends may not expose this functionality.

* **Returns:**
  an [`AnnotationAPI`](#fiftyone.utils.annotations.AnnotationAPI), or `None` if the backend does not
  expose an API

#### use_api(api)

Registers an API instance to use for subsequent operations.

* **Parameters:**
  **api** – an [`AnnotationAPI`](#fiftyone.utils.annotations.AnnotationAPI)

#### launch_editor()

Launches the annotation backend’s editor for these results.

#### cleanup()

Deletes all information for this run from the annotation backend.

#### attributes()

Returns the list of class attributes that will be serialized by
[`serialize()`](#fiftyone.utils.annotations.AnnotationResults.serialize).

* **Returns:**
  a list of attributes

#### *property* backend

The `BaseRun` for these results.

#### *static* base_results_cls(type)

Returns the results class for the given run type.

* **Parameters:**
  **type** – a `BaseRunConfig.type`
* **Returns:**
  a `BaseRunResults` subclass

#### *property* cls

The fully-qualified name of this `BaseRunResults` class.

#### *property* config

The `BaseRunConfig` for these results.

#### copy()

Returns a deep copy of the object.

* **Returns:**
  a Serializable instance

#### custom_attributes(dynamic=False, private=False)

Returns a customizable list of class attributes.

By default, all attributes in vars(self) are returned, minus private
attributes (those starting with “_”).

* **Parameters:**
  * **dynamic** – whether to include dynamic properties, e.g., those defined
    by getter/setter methods or the `@property` decorator. By
    default, this is False
  * **private** – whether to include private properties, i.e., those
    starting with “_”. By default, this is False
* **Returns:**
  a list of class attributes

#### *classmethod* from_dict(d, samples, config, key)

Builds a `BaseRunResults` from a JSON dict representation of
it.

* **Parameters:**
  * **d** – a JSON dict
  * **samples** – the [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
    for the run
  * **config** – the `BaseRunConfig` for the run
  * **key** – the run key
* **Returns:**
  a `BaseRunResults`

#### *classmethod* from_json(path, \*args, \*\*kwargs)

Constructs a Serializable object from a JSON file.

Subclasses may override this method, but, by default, this method
simply reads the JSON and calls from_dict(), which subclasses must
implement.

* **Parameters:**
  * **path** – the path to the JSON file on disk
  * **\*args** – optional positional arguments for `self.from_dict()`
  * **\*\*kwargs** – optional keyword arguments for `self.from_dict()`
* **Returns:**
  an instance of the Serializable class

#### *classmethod* from_str(s, \*args, \*\*kwargs)

Constructs a Serializable object from a JSON string.

Subclasses may override this method, but, by default, this method
simply parses the string and calls from_dict(), which subclasses must
implement.

* **Parameters:**
  * **s** – a JSON string representation of a Serializable object
  * **\*args** – optional positional arguments for `self.from_dict()`
  * **\*\*kwargs** – optional keyword arguments for `self.from_dict()`
* **Returns:**
  an instance of the Serializable class

#### *classmethod* get_class_name()

Returns the fully-qualified class name string of this object.

#### get_meta()

Small facts that DESCRIBE these results, stored beside the run so
callers can read them without loading the results.

The results themselves are a blob in GridFS whose arrays can run to
hundreds of MB; a count or a path is a few bytes. Anything returned
here is written when the results are saved (see
`BaseRun.save_run_results()`), so no read path has to load — or
write — to answer for it.

* **Returns:**
  a JSON-serializable dict

#### *property* key

The run key for these results.

#### *property* samples

The [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection) associated
with these results.

#### save()

Saves the results to the database.

#### save_config()

Saves these results config to the database.

#### serialize(reflective=False)

Serializes the object into a dictionary.

Serialization is applied recursively to all attributes in the object,
including element-wise serialization of lists and dictionary values.

* **Parameters:**
  **reflective** – whether to include reflective attributes when
  serializing the object. By default, this is False
* **Returns:**
  a JSON dictionary representation of the object

#### to_str(pretty_print=True, \*\*kwargs)

Returns a string representation of this object.

* **Parameters:**
  * **pretty_print** – whether to render the JSON in human readable format
    with newlines and indentations. By default, this is True
  * **\*\*kwargs** – optional keyword arguments for `self.serialize()`
* **Returns:**
  a string representation of the object

#### write_json(path, pretty_print=False, \*\*kwargs)

Serializes the object and writes it to disk.

* **Parameters:**
  * **path** – the output path
  * **pretty_print** – whether to render the JSON in human readable format
    with newlines and indentations. By default, this is False
  * **\*\*kwargs** – optional keyword arguments for `self.serialize()`

### *class* fiftyone.utils.annotations.AnnotationAPI

Bases: `object`

Base class for APIs that connect to annotation backends.

**Methods:**

| [`close`](#fiftyone.utils.annotations.AnnotationAPI.close)()   | Closes the API session.   |
|----------------------------------------------------------------|---------------------------|

#### close()

Closes the API session.

### *class* fiftyone.utils.annotations.DrawConfig(d)

Bases: `AnnotationConfig`

Configuration class that controls the look-and-feel of the annotations
rendered on images/videos.

* **Parameters:**
  * **show_frame_attr_names** – (True) whether to render video/frame attribute
    names, if available
  * **show_frame_attr_confidences** – (False) whether to render video/frame
    attribute confidences, if available
  * **frame_attrs_box_gap** – (“1%”) the gap between the frame attributes box
    and the upper left corner of the image. This value is parsed by
    `eta.core.image.Width(frame_attrs_box_gap)`
  * **show_object_boxes** – (True) whether to render object bounding boxes, if
    available. If this is `False`, labels, confidences, attributes,
    etc. are also hidden
  * **show_object_names** – (True) whether to render object names, if available
  * **show_object_labels** – (True) whether to render object labels, if
    available
  * **show_object_attrs** – (True) whether to render object attributes, if
    available
  * **show_object_confidences** – (False) whether to render object label
    confidences, if available
  * **per_object_name_colors** – (True) whether to render boxes for objects with
    different names in different colors
  * **per_object_label_colors** – (True) whether to render boxes for objects
    with different labels in different colors
  * **per_object_index_colors** – (True) whether to render boxes for objects
    with different indexes in different colors
  * **show_object_attr_names** – (True) whether to render object attribute
    names, if available
  * **show_object_attr_confidences** – (False) whether to render object
    attribute confidences, if available
  * **show_object_indices** – (True) whether to render object indices, if
    available
  * **show_object_masks** – (True) whether to render object segmentation masks,
    if available
  * **occluded_object_attr** – (“occluded”) the name of the boolean attribute
    indicating whether an object is occluded
  * **hide_occluded_objects** – (False) whether to hide objects when they are
    occluded
  * **show_event_boxes** – (True) whether to render event bounding boxes, if
    available. If this is `False`, all attributes, confidences, etc.
    are also hidden
  * **show_event_labels** – (True) whether to render event labels, if available
  * **show_event_attrs** – (True) whether to render event attributes, if
    available
  * **show_event_names** – (True) whether to render event names, if available
  * **show_event_confidences** – (False) whether to render event label
    confidences, if available
  * **per_event_name_colors** – (True) whether to render boxes for events with
    different names in different colors
  * **per_event_label_colors** – (True) whether to render boxes for events with
    different labels in different colors
  * **per_event_index_colors** – (True) whether to render boxes for events with
    different indexes in different colors
  * **show_event_attr_names** – (True) whether to render event attribute names,
    if available
  * **show_event_attr_confidences** – (False) whether to render event attribute
    confidences, if available
  * **show_event_indices** – (True) whether to render event indices, if
    available. By default, this is `True`
  * **show_event_masks** – (True) whether to render event segmentation masks, if
    available
  * **show_event_label_on_objects** – (True) whether to render event labels as
    attributes on objects that belong to events
  * **show_event_objects_in_same_color** – (True) whether to render objects that
    belong to events in the same color as their parent event
  * **occluded_event_attr** – (“occluded”) the name of the boolean attribute
    indicating whether an event is occluded
  * **hide_occluded_events** – (False) whether to hide events when they are
    occluded
  * **bbox_alpha** – (0.75) the transparency of bounding boxes
  * **bbox_label_text_pad_pixels** – (2) the padding, in pixels, around the text
    in bounding box labels
  * **bbox_linewidth** – 
    1. the linewidth, in pixels, of bounding boxes
  * **mask_border_thickness** – (2) the thickness, in pixels, to use when
    drawing the borders of segmentation masks
  * **mask_fill_alpha** – (0.7) the transparency of segmentation masks
  * **show_frame_mask_semantics** – (True) whether to render semantic labels for
    frame mask regions, when mask indexes are available
  * **attrs_box_render_method** – (“panel”) the method used to render object
    attributes
  * **attrs_box_bg_color** – (“#000000”) the background color for attributes
    boxes
  * **attrs_box_bg_alpha** – (0.5) the transparency of attribute panel boxes
  * **attrs_box_text_pad_pixels** – (5) the padding, in pixels, around the text
    in attribute boxes
  * **attrs_box_text_line_spacing_pixels** – (1) the padding, in pixels, between
    each line of text in attribute boxes
  * **show_keypoints_names** – (False) whether to render keypoints names, if
    available
  * **show_keypoints_labels** – (False) whether to render keypoints labels, if
    available
  * **show_keypoints_attrs** – (False) whether to render keypoints attributes, if
    available
  * **show_keypoints_attr_names** – (False) whether to render keypoint attribute
    names, if available
  * **show_keypoints_attr_confidences** – (False) whether to render keypoint
    attribute confidences, if available
  * **per_keypoints_name_colors** – (True) whether to render keypoints with
    different names in different colors
  * **per_keypoints_label_colors** – (True) whether to render keypoints with
    different labels in different colors
  * **keypoints_size** – 
    1. the size to render keypoints
  * **keypoints_alpha** – (0.75) the transparency of keypoints
  * **keypoints_skeleton** – 

    (None) an optional keypoint skeleton dictionary of
    the following form:
    ```default
    {
        "labels": [
            "left hand" "left shoulder", "right shoulder",
            "right hand", "left eye", "right eye", "mouth"
        ],
        "edges": [[0, 1, 2, 3], [4, 5, 6]],
    }
    ```
  * **draw_keypoints_skeletons** – (True) whether to render keypoint skeletons,
    if available
  * **keypoints_edge_linewidth** (*2*) – the linewidth, in pixels, of keypoint
    skeleton edges
  * **keypoints_edge_alpha** – (0.75) the transparency of keypoint skeleton
    edges
  * **show_polyline_names** – (True) whether to render polyline names, if
    available
  * **show_polyline_labels** – (True) whether to render polyline labels, if
    available
  * **show_polyline_attrs** – (True) whether to render polyline attributes, if
    available
  * **show_polyline_attr_names** – (True) whether to render polyline attribute
    names, if available
  * **show_polyline_attr_confidences** – (False) whether to render polyline
    attribute confidences, if available
  * **hide_non_filled_polyline_annos** – (False) whether to override other
    settings and hide the annotation panels for non-filled polylines
    (those with `filled == False`)
  * **per_polyline_name_colors** – (True) whether to render polylines with
    different names in different colors
  * **per_polyline_label_colors** – (True) whether to render polylines with
    different labels in different colors
  * **polyline_alpha** – (0.75) the transparency of polylines
  * **polyline_linewidth** – (3) the linewidth, in pixels, of non-filled
    polylines
  * **fill_polylines** – (True) whether to draw polylines as filled, when
    possible
  * **show_all_names** – (False) whether to render all names, if available. If
    set to `True`, this overrides all other name flags
  * **hide_all_names** – (False) whether to hide all names, if available. If
    set to `True`, this overrides all other name flags
  * **show_name_only_titles** – (False) whether to render titles that only
    contain the `name` of the entity (i.e., no label, confidence,
    index, etc)
  * **show_all_confidences** – (False) whether to render all confidences, if
    available. If set to `True`, this overrides all other confidence
    flags
  * **hide_all_confidences** – (False) whether to hide all confidences, if
    available. If set to `True`, this overrides all other confidence
    flags
  * **labels_whitelist** – (None) an optional whitelist of labels (of any kind).
    If provided, only entities whose `label` is in this list will be
    rendered
  * **labels_blacklist** – (None) an optional list of labels (of any kind) to
    not render
  * **attr_names_blacklist** – (None) an optional list of attribute names (of
    any kind) to not render
  * **attr_values_blacklist** – (None) an optional list of attribute values (of
    any kind) to not render
  * **hide_false_boolean_attrs** – (False) whether to hide attributes (of any
    kind) when they are `False`
  * **confidence_scaled_alpha** – (False) whether to scale alpha values of
    objects and events based on their associated confidences
  * **colormap_config** – (None) the `eta.core.annotations.ColormapConfig` to
    use to select colors for objects/event boxes
  * **text_color** – (“#FFFFFF”) the annotation text color
  * **font_path** – (`eta.core.constants.DEFAULT_FONT_PATH`) the path to the
    `PIL.ImageFont` to use
  * **font_size** – 
    1. the font size to use
  * **scale_by_media_height** – (True) whether to scale font sizes and
    linewidths according to the height of the media (relative to a
    height of 720 pixels)
  * **add_logo** – (False) whether to add a logo to the frames
  * **logo_config** – (None) the `eta.core.logo.LogoConfig` describing the
    logo to use

**Methods:**

| [`attributes`](#fiftyone.utils.annotations.DrawConfig.attributes)()                                                 | Returns a list of class attributes to be serialized.                                                                   |
|---------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------|
| [`builder`](#fiftyone.utils.annotations.DrawConfig.builder)()                                                       | Returns a ConfigBuilder instance for this class.                                                                       |
| [`copy`](#fiftyone.utils.annotations.DrawConfig.copy)()                                                             | Returns a deep copy of the object.                                                                                     |
| [`custom_attributes`](#fiftyone.utils.annotations.DrawConfig.custom_attributes)([dynamic, private])                 | Returns a customizable list of class attributes.                                                                       |
| [`default`](#fiftyone.utils.annotations.DrawConfig.default)()                                                       | Returns the default config instance.                                                                                   |
| [`from_dict`](#fiftyone.utils.annotations.DrawConfig.from_dict)(d)                                                  | Constructs a Config object from a JSON dictionary.                                                                     |
| [`from_json`](#fiftyone.utils.annotations.DrawConfig.from_json)(path, \*args, \*\*kwargs)                           | Constructs a Serializable object from a JSON file.                                                                     |
| [`from_kwargs`](#fiftyone.utils.annotations.DrawConfig.from_kwargs)(\*\*kwargs)                                     | Constructs a Config object from keyword arguments.                                                                     |
| [`from_str`](#fiftyone.utils.annotations.DrawConfig.from_str)(s, \*args, \*\*kwargs)                                | Constructs a Serializable object from a JSON string.                                                                   |
| [`get_class_name`](#fiftyone.utils.annotations.DrawConfig.get_class_name)()                                         | Returns the fully-qualified class name string of this object.                                                          |
| [`load_default`](#fiftyone.utils.annotations.DrawConfig.load_default)()                                             | Loads the default config instance from file.                                                                           |
| [`parse_array`](#fiftyone.utils.annotations.DrawConfig.parse_array)(d, key[, default])                              | Parses a raw array attribute.                                                                                          |
| [`parse_bool`](#fiftyone.utils.annotations.DrawConfig.parse_bool)(d, key[, default])                                | Parses a boolean value.                                                                                                |
| [`parse_categorical`](#fiftyone.utils.annotations.DrawConfig.parse_categorical)(d, key, choices[, default])         | Parses a categorical JSON field, which must take a value from among the given choices.                                 |
| [`parse_dict`](#fiftyone.utils.annotations.DrawConfig.parse_dict)(d, key[, default])                                | Parses a dictionary attribute.                                                                                         |
| [`parse_int`](#fiftyone.utils.annotations.DrawConfig.parse_int)(d, key[, default])                                  | Parses an integer attribute.                                                                                           |
| [`parse_mutually_exclusive_fields`](#fiftyone.utils.annotations.DrawConfig.parse_mutually_exclusive_fields)(fields) | Parses a mutually exclusive dictionary of pre-parsed fields, which must contain exactly one field with a truthy value. |
| [`parse_number`](#fiftyone.utils.annotations.DrawConfig.parse_number)(d, key[, default])                            | Parses a number attribute.                                                                                             |
| [`parse_object`](#fiftyone.utils.annotations.DrawConfig.parse_object)(d, key, cls[, default])                       | Parses an object attribute.                                                                                            |
| [`parse_object_array`](#fiftyone.utils.annotations.DrawConfig.parse_object_array)(d, key, cls[, default])           | Parses an array of objects.                                                                                            |
| [`parse_object_dict`](#fiftyone.utils.annotations.DrawConfig.parse_object_dict)(d, key, cls[, default])             | Parses a dictionary whose values are objects.                                                                          |
| [`parse_path`](#fiftyone.utils.annotations.DrawConfig.parse_path)(d, key[, default])                                | Parses a path attribute.                                                                                               |
| [`parse_raw`](#fiftyone.utils.annotations.DrawConfig.parse_raw)(d, key[, default])                                  | Parses a raw (arbitrary) JSON field.                                                                                   |
| [`parse_string`](#fiftyone.utils.annotations.DrawConfig.parse_string)(d, key[, default])                            | Parses a string attribute.                                                                                             |
| [`serialize`](#fiftyone.utils.annotations.DrawConfig.serialize)([reflective])                                       | Serializes the object into a dictionary.                                                                               |
| [`set_media_size`](#fiftyone.utils.annotations.DrawConfig.set_media_size)([frame_size, shape, img])                 | Sets the size of the media to the given value.                                                                         |
| [`to_str`](#fiftyone.utils.annotations.DrawConfig.to_str)([pretty_print])                                           | Returns a string representation of this object.                                                                        |
| [`validate_all_or_nothing_fields`](#fiftyone.utils.annotations.DrawConfig.validate_all_or_nothing_fields)(fields)   | Validates a dictionary of pre-parsed fields checking that either all or none of the fields have a truthy value.        |
| [`write_json`](#fiftyone.utils.annotations.DrawConfig.write_json)(path[, pretty_print])                             | Serializes the object and writes it to disk.                                                                           |

**Attributes:**

| [`colormap`](#fiftyone.utils.annotations.DrawConfig.colormap)         |    |
|-----------------------------------------------------------------------|----|
| [`font`](#fiftyone.utils.annotations.DrawConfig.font)                 |    |
| [`linewidth`](#fiftyone.utils.annotations.DrawConfig.linewidth)       |    |
| [`logo`](#fiftyone.utils.annotations.DrawConfig.logo)                 |    |
| [`media_height`](#fiftyone.utils.annotations.DrawConfig.media_height) |    |
| [`scale_factor`](#fiftyone.utils.annotations.DrawConfig.scale_factor) |    |

#### attributes()

Returns a list of class attributes to be serialized.

This method is called internally by `serialize()` to determine the
class attributes to serialize.

Subclasses can override this method, but, by default, all attributes in
vars(self) are returned, minus private attributes, i.e., those starting
with “_”. The order of the attributes in this list is preserved when
serializing objects, so a common pattern is for subclasses to override
this method if they want their JSON files to be organized in a
particular way.

* **Returns:**
  a list of class attributes to be serialized

#### *classmethod* builder()

Returns a ConfigBuilder instance for this class.

#### *property* colormap

#### copy()

Returns a deep copy of the object.

* **Returns:**
  a Serializable instance

#### custom_attributes(dynamic=False, private=False)

Returns a customizable list of class attributes.

By default, all attributes in vars(self) are returned, minus private
attributes (those starting with “_”).

* **Parameters:**
  * **dynamic** – whether to include dynamic properties, e.g., those defined
    by getter/setter methods or the `@property` decorator. By
    default, this is False
  * **private** – whether to include private properties, i.e., those
    starting with “_”. By default, this is False
* **Returns:**
  a list of class attributes

#### *classmethod* default()

Returns the default config instance.

By default, this method instantiates the class from an empty
dictionary, which will only succeed if all attributes are optional.
Otherwise, subclasses should override this method to provide the
desired default configuration.

#### *property* font

#### *classmethod* from_dict(d)

Constructs a Config object from a JSON dictionary.

Config subclass constructors accept JSON dictionaries, so this method
simply passes the dictionary to cls().

* **Parameters:**
  **d** – a dict of fields expected by cls
* **Returns:**
  an instance of cls

#### *classmethod* from_json(path, \*args, \*\*kwargs)

Constructs a Serializable object from a JSON file.

Subclasses may override this method, but, by default, this method
simply reads the JSON and calls from_dict(), which subclasses must
implement.

* **Parameters:**
  * **path** – the path to the JSON file on disk
  * **\*args** – optional positional arguments for `self.from_dict()`
  * **\*\*kwargs** – optional keyword arguments for `self.from_dict()`
* **Returns:**
  an instance of the Serializable class

#### *classmethod* from_kwargs(\*\*kwargs)

Constructs a Config object from keyword arguments.

* **Parameters:**
  **\*\*kwargs** – keyword arguments that define the fields expected by cls
* **Returns:**
  an instance of cls

#### *classmethod* from_str(s, \*args, \*\*kwargs)

Constructs a Serializable object from a JSON string.

Subclasses may override this method, but, by default, this method
simply parses the string and calls from_dict(), which subclasses must
implement.

* **Parameters:**
  * **s** – a JSON string representation of a Serializable object
  * **\*args** – optional positional arguments for `self.from_dict()`
  * **\*\*kwargs** – optional keyword arguments for `self.from_dict()`
* **Returns:**
  an instance of the Serializable class

#### *classmethod* get_class_name()

Returns the fully-qualified class name string of this object.

#### *property* linewidth

#### *classmethod* load_default()

Loads the default config instance from file.

Subclasses must implement this method if they intend to support
default instances.

#### *property* logo

#### *property* media_height

#### *static* parse_array(d, key, default=<eta.core.config.NoDefault object>)

Parses a raw array attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default list to return if key is not present
* **Returns:**
  a list of raw (untouched) values
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_bool(d, key, default=<eta.core.config.NoDefault object>)

Parses a boolean value.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default bool to return if key is not present
* **Returns:**
  True/False
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_categorical(d, key, choices, default=<eta.core.config.NoDefault object>)

Parses a categorical JSON field, which must take a value from among
the given choices.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **choices** – either an iterable of possible values or an enum-like
    class whose attributes define the possible values
  * **default** – a default value to return if key is not present
* **Returns:**
  the raw (untouched) value of the given field, which is equal to a
  value from `choices`
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the key was present in the dictionary but its value
      was not an allowed choice, or if no default value was provided
      and the key was not found in the dictionary

#### *static* parse_dict(d, key, default=<eta.core.config.NoDefault object>)

Parses a dictionary attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default dict to return if key is not present
* **Returns:**
  a dictionary
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_int(d, key, default=<eta.core.config.NoDefault object>)

Parses an integer attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default integer value to return if key is not present
* **Returns:**
  an int
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_mutually_exclusive_fields(fields)

Parses a mutually exclusive dictionary of pre-parsed fields, which
must contain exactly one field with a truthy value.

* **Parameters:**
  **fields** – a dictionary of pre-parsed fields
* **Returns:**
  the (field, value) that was set
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if zero or more than one truthy value was found

#### *static* parse_number(d, key, default=<eta.core.config.NoDefault object>)

Parses a number attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default numeric value to return if key is not present
* **Returns:**
  a number (e.g. int, float)
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_object(d, key, cls, default=<eta.core.config.NoDefault object>)

Parses an object attribute.

The value of d[key] can be either an instance of cls or a serialized
dict from an instance of cls.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **cls** – the class of d[key]
  * **default** – a default cls instance to return if key is not present
* **Returns:**
  an instance of cls
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_object_array(d, key, cls, default=<eta.core.config.NoDefault object>)

Parses an array of objects.

The values in d[key] can be either instances of cls or serialized
dicts from instances of cls.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **cls** – the class of the elements of list d[key]
  * **default** – the default list to return if key is not present
* **Returns:**
  a list of cls instances
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_object_dict(d, key, cls, default=<eta.core.config.NoDefault object>)

Parses a dictionary whose values are objects.

The values in d[key] can be either instances of cls or serialized
dicts from instances of cls.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **cls** – the class of the values of dictionary d[key]
  * **default** – the default dict of cls instances to return if key is not
    present
* **Returns:**
  a dictionary whose values are cls instances
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_path(d, key, default=<eta.core.config.NoDefault object>)

Parses a path attribute.

The path is converted to an absolute path if necessary via
`os.path.abspath(os.path.expanduser(value))`.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default string to return if key is not present
* **Returns:**
  a path string
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *static* parse_raw(d, key, default=<eta.core.config.NoDefault object>)

Parses a raw (arbitrary) JSON field.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default value to return if key is not present
* **Returns:**
  the raw (untouched) value of the given field
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if no default value was provided and the key was not
      found in the dictionary

#### *static* parse_string(d, key, default=<eta.core.config.NoDefault object>)

Parses a string attribute.

* **Parameters:**
  * **d** – a JSON dictionary
  * **key** – the key to parse
  * **default** – a default string to return if key is not present
* **Returns:**
  a string
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if the field value was the wrong type or no default
      value was provided and the key was not found in the dictionary

#### *property* scale_factor

#### serialize(reflective=False)

Serializes the object into a dictionary.

Serialization is applied recursively to all attributes in the object,
including element-wise serialization of lists and dictionary values.

* **Parameters:**
  **reflective** – whether to include reflective attributes when
  serializing the object. By default, this is False
* **Returns:**
  a JSON dictionary representation of the object

#### set_media_size(frame_size=None, shape=None, img=None)

Sets the size of the media to the given value. This allows for
optimizing font sizes, linewidths, and logo resolutions to suit the
dimensions of the media being annotated.

Exactly *one* keyword argument must be provided.

* **Parameters:**
  * **frame_size** – the (width, height) of the image/video frame
  * **shape** – the (height, width, …) of the image/video frame, e.g. from
    img.shape
  * **img** – an example image/video frame

#### to_str(pretty_print=True, \*\*kwargs)

Returns a string representation of this object.

* **Parameters:**
  * **pretty_print** – whether to render the JSON in human readable format
    with newlines and indentations. By default, this is True
  * **\*\*kwargs** – optional keyword arguments for `self.serialize()`
* **Returns:**
  a string representation of the object

#### *static* validate_all_or_nothing_fields(fields)

Validates a dictionary of pre-parsed fields checking that either
all or none of the fields have a truthy value.

* **Parameters:**
  **fields** – a dictionary of pre-parsed fields
* **Raises:**
  [**ConfigError**](fiftyone.zoo.md#fiftyone.zoo.ConfigError) – if some values are truth and some are not

#### write_json(path, pretty_print=False, \*\*kwargs)

Serializes the object and writes it to disk.

* **Parameters:**
  * **path** – the output path
  * **pretty_print** – whether to render the JSON in human readable format
    with newlines and indentations. By default, this is False
  * **\*\*kwargs** – optional keyword arguments for `self.serialize()`

### fiftyone.utils.annotations.draw_labeled_images(samples, output_dir, rel_dir=None, label_fields=None, config=None, progress=None, \*\*kwargs)

Renders annotated versions of the images in the collection with the
specified label data overlaid to the given directory.

The filenames of the sample images are maintained, unless a name conflict
would occur in `output_dir`, in which case an index of the form
`"-%d" % count` is appended to the base filename.

The images are written in format `fo.config.default_image_ext`.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **output_dir** – the directory to write the annotated images
  * **rel_dir** (*None*) – an optional relative directory to strip from each input
    filepath to generate a unique identifier that is joined with
    `output_dir` to generate an output path for each annotated image.
    This argument allows for populating nested subdirectories in
    `output_dir` that match the shape of the input paths. The path is
    converted to an absolute path (if necessary) via
    [`fiftyone.core.storage.normalize_path()`](fiftyone.core.storage.md#fiftyone.core.storage.normalize_path)
  * **label_fields** (*None*) – a label field or list of label fields to render.
    If omitted, all compatible fields are rendered
  * **config** (*None*) – an optional [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) configuring how to draw
    the labels
  * **progress** (*None*) – whether to render a progress bar (True/False), use the
    default value `fiftyone.config.show_progress_bars` (None), or a
    progress callback function to invoke instead
  * **\*\*kwargs** – optional keyword arguments specifying parameters of the
    default [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) to override
* **Returns:**
  the list of paths to the labeled images

### fiftyone.utils.annotations.draw_labeled_image(sample, outpath, label_fields=None, config=None, \*\*kwargs)

Renders an annotated version of the sample’s image with the specified
label data overlaid to disk.

* **Parameters:**
  * **sample** – a [`fiftyone.core.sample.Sample`](fiftyone.core.sample.md#fiftyone.core.sample.Sample)
  * **outpath** – the path to write the annotated image
  * **label_fields** (*None*) – a label field or list of label fields to render.
    If omitted, all compatible fields are rendered
  * **config** (*None*) – an optional [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) configuring how to draw
    the labels
  * **\*\*kwargs** – optional keyword arguments specifying parameters of the
    default [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) to override

### fiftyone.utils.annotations.draw_labeled_videos(samples, output_dir, rel_dir=None, label_fields=None, config=None, progress=None, \*\*kwargs)

Renders annotated versions of the videos in the collection with the
specified label data overlaid to the given directory.

The filenames of the videos are maintained, unless a name conflict would
occur in `output_dir`, in which case an index of the form
`"-%d" % count` is appended to the base filename.

The videos are written in format `fo.config.default_video_ext`.

* **Parameters:**
  * **samples** – a [`fiftyone.core.collections.SampleCollection`](fiftyone.core.collections.md#fiftyone.core.collections.SampleCollection)
  * **output_dir** – the directory to write the annotated videos
  * **rel_dir** (*None*) – an optional relative directory to strip from each input
    filepath to generate a unique identifier that is joined with
    `output_dir` to generate an output path for each annotated video.
    This argument allows for populating nested subdirectories in
    `output_dir` that match the shape of the input paths. The path is
    converted to an absolute path (if necessary) via
    [`fiftyone.core.storage.normalize_path()`](fiftyone.core.storage.md#fiftyone.core.storage.normalize_path)
  * **label_fields** (*None*) – a label field or list of label fields to render.
    If omitted, all compatible fields are rendered
  * **config** (*None*) – an optional [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) configuring how to draw
    the labels
  * **progress** (*None*) – whether to render a progress bar (True/False), use the
    default value `fiftyone.config.show_progress_bars` (None), or a
    progress callback function to invoke instead
  * **\*\*kwargs** – optional keyword arguments specifying parameters of the
    default [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) to override
* **Returns:**
  the list of paths to the labeled videos

### fiftyone.utils.annotations.draw_labeled_video(sample, outpath, support=None, label_fields=None, config=None, \*\*kwargs)

Renders an annotated version of the sample’s video with the specified
label data overlaid to disk.

* **Parameters:**
  * **sample** – a [`fiftyone.core.sample.Sample`](fiftyone.core.sample.md#fiftyone.core.sample.Sample)
  * **outpath** – the path to write the annotated image
  * **support** (*None*) – an optional `[first, last]` range of frames to
    render
  * **label_fields** (*None*) – a label field or list of label fields to render.
    If omitted, all compatible fields are rendered
  * **config** (*None*) – an optional [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) configuring how to draw
    the labels
  * **\*\*kwargs** – optional keyword arguments specifying parameters of the
    default [`DrawConfig`](#fiftyone.utils.annotations.DrawConfig) to override
