fiftyone.utils.cvat.CVATVideoDatasetExporter

class documentation

class CVATVideoDatasetExporter(foud.LabeledVideoDatasetExporter, foud.ExportPathsMixin): (source)

Constructor: CVATVideoDatasetExporter(export_dir, data_path, labels_path, export_media, rel_dir)

Exporter that writes CVAT video datasets to disk.

See :ref:`this page <CVATVideoDataset-export>` for format details.

Parameters
export_dir	the directory to write the export. This has no effect if `data_path` and `labels_path` are absolute paths
data_path	an optional parameter that enables explicit control over the location of the exported media. Can be any of the following: a folder name like `"data"` or `"data/"` specifying a subfolder of `export_dir` in which to export the media an absolute directory path in which to export the media. In this case, the `export_dir` has no effect on the location of the data a JSON filename like `"data.json"` specifying the filename of the manifest file in `export_dir` generated when `export_media` is `"manifest"` an absolute filepath specifying the location to write the JSON manifest file when `export_media` is `"manifest"`. In this case, `export_dir` has no effect on the location of the data If None, the default value of this parameter will be chosen based on the value of the `export_media` parameter
labels_path	an optional parameter that enables explicit control over the location of the exported labels. Can be any of the following: a folder name like `"labels"` or `"labels/"` specifying the location in `export_dir` in which to export the labels an absolute filepath to which to export the labels. In this case, the `export_dir` has no effect on the location of the labels If None, the labels will be exported into `export_dir` using the default folder name
export_media	controls how to export the raw media. The supported values are: `True`: copy all media files into the output directory `False`: don't export media `"move"`: move all media files into the output directory `"symlink"`: create symlinks to the media files in the output directory `"manifest"`: create a `data.json` in the output directory that maps UUIDs used in the labels files to the filepaths of the source media, rather than exporting the actual media If None, the default value of this parameter will be chosen based on the value of the `data_path` parameter
rel_dir	an optional relative directory to strip from each input filepath to generate a unique identifier for each video. When exporting media, this identifier is joined with `data_path` to generate an output path for each exported video. This argument allows for populating nested subdirectories that match the shape of the input paths. The path is converted to an absolute path (if necessary) via `fiftyone.core.storage.normalize_path`

Method	`__init__`	Undocumented
Method	`close`	Performs any necessary actions after the last sample has been exported.
Method	`export_sample`	Exports the given sample to the dataset.
Method	`log_collection`	Logs any relevant information about the `fiftyone.core.collections.SampleCollection` whose samples will be exported.
Method	`setup`	Performs any necessary setup before exporting the first sample in the dataset.
Instance Variable	`data_path`	Undocumented
Instance Variable	`export_media`	Undocumented
Instance Variable	`labels_path`	Undocumented
Instance Variable	`rel_dir`	Undocumented
Property	`frame_labels_cls`	The `fiftyone.core.labels.Label` class(es) that can be exported by this exporter at the frame-level.
Property	`label_cls`	The `fiftyone.core.labels.Label` class(es) that can be exported at the sample-level.
Property	`requires_video_metadata`	Whether this exporter requires `fiftyone.core.metadata.VideoMetadata` instances for each sample being exported.
Instance Variable	`_media_exporter`	Undocumented
Instance Variable	`_num_samples`	Undocumented
Instance Variable	`_task_labels`	Undocumented
Instance Variable	`_writer`	Undocumented

Inherited from DatasetExporter (via LabeledVideoDatasetExporter):

Method	`__enter__`	Undocumented
Method	`__exit__`	Undocumented

Inherited from ExportPathsMixin (via LabeledVideoDatasetExporter, DatasetExporter):

Static Method	`_parse_data_path`	Helper function that computes default values for the `data_path` and `export_media` parameters supported by many exporters.
Static Method	`_parse_labels_path`	Helper function that computes default values for the `labels_path` parameter supported by many exporters.

def __init__(self, export_dir=None, data_path=None, labels_path=None, export_media=None, rel_dir=None): (source) ¶

overrides fiftyone.utils.data.exporters.DatasetExporter.__init__

Undocumented

def close(self, *args): (source) ¶

overrides fiftyone.utils.data.exporters.DatasetExporter.close

Performs any necessary actions after the last sample has been exported.

This method is called when the exporter's context manager interface is exited, DatasetExporter.__exit__.

Parameters
*args	the arguments to `DatasetExporter.__exit__`

def export_sample(self, video_path, _, frames, metadata=None): (source) ¶

overrides fiftyone.utils.data.exporters.LabeledVideoDatasetExporter.export_sample

Exports the given sample to the dataset.

Parameters
video_path	the path to a video on disk
_	Undocumented
frames	a dictionary mapping frame numbers to dictionaries that map field names to `fiftyone.core.labels.Label` instances, or `None` if the sample has no frame-level labels
metadata:`None`	a `fiftyone.core.metadata.VideoMetadata` instance for the sample. Only required when `requires_video_metadata` is `True`
label	an instance of `label_cls`, or a dictionary mapping field names to `fiftyone.core.labels.Label` instances, or `None` if the sample has no sample-level labels

def log_collection(self, sample_collection): (source) ¶

overrides fiftyone.utils.data.exporters.DatasetExporter.log_collection

Logs any relevant information about the fiftyone.core.collections.SampleCollection whose samples will be exported.

Subclasses can optionally implement this method if their export format can record information such as the fiftyone.core.collections.SampleCollection.info of the collection being exported.

By convention, this method must be optional; i.e., if it is not called before the first call to export_sample, then the exporter must make do without any information about the fiftyone.core.collections.SampleCollection (which may not be available, for example, if the samples being exported are not stored in a collection).

Parameters
sample_collection	the `fiftyone.core.collections.SampleCollection` whose samples will be exported

def setup(self): (source) ¶

overrides fiftyone.utils.data.exporters.DatasetExporter.setup

Performs any necessary setup before exporting the first sample in the dataset.

This method is called when the exporter's context manager interface is entered, DatasetExporter.__enter__.

data_path: None = (source) ¶

Undocumented

export_media: None = (source) ¶

Undocumented

labels_path: None = (source) ¶

Undocumented

rel_dir: None = (source) ¶

Undocumented

@property
frame_labels_cls = (source) ¶

overrides fiftyone.utils.data.exporters.LabeledVideoDatasetExporter.frame_labels_cls

The fiftyone.core.labels.Label class(es) that can be exported by this exporter at the frame-level.

This can be any of the following:

a fiftyone.core.labels.Label class. In this case, the exporter directly exports frame labels of this type
a list or tuple of fiftyone.core.labels.Label classes. In this case, the exporter can export a single frame label field of any of these types
a dict mapping keys to fiftyone.core.labels.Label classes. In this case, the exporter can export multiple frame label fields with value-types specified by this dictionary. Not all keys need be present in the exported frame labels
None. In this case, the exporter makes no guarantees about the frame labels that it can export

@property
label_cls = (source) ¶

overrides fiftyone.utils.data.exporters.LabeledVideoDatasetExporter.label_cls

The fiftyone.core.labels.Label class(es) that can be exported at the sample-level.

This can be any of the following:

a fiftyone.core.labels.Label class. In this case, the exporter directly exports sample-level labels of this type
a list or tuple of fiftyone.core.labels.Label classes. In this case, the exporter can export a single sample-level label field of any of these types
a dict mapping keys to fiftyone.core.labels.Label classes. In this case, the exporter can export multiple label fields with value-types specified by this dictionary. Not all keys need be present in the exported sample-level labels
None. In this case, the exporter makes no guarantees about the sample-level labels that it can export

@property
requires_video_metadata = (source) ¶

overrides fiftyone.utils.data.exporters.LabeledVideoDatasetExporter.requires_video_metadata

Whether this exporter requires fiftyone.core.metadata.VideoMetadata instances for each sample being exported.

_media_exporter = (source) ¶

Undocumented

_num_samples: int = (source) ¶

Undocumented

_task_labels = (source) ¶

Undocumented

_writer = (source) ¶

Undocumented