mp.tasks.vision.PoseLandmarker

Class that performs pose landmarks detection on images.

mp.tasks.vision.PoseLandmarker(
    lib: mp.tasks.vision.drawing_styles.face_landmarker.serial_dispatcher.SerialDispatcher,
    handle: ctypes.c_void_p,
    dispatcher: mp.tasks.vision.drawing_styles.face_landmarker.async_result_dispatcher.AsyncResultDispatcher,
    async_callback: _C_TYPES_RESULT_CALLBACK
)

lib The dispatch library to use for the pose landmarker.
handle The C pointer to the pose landmarker.
dispatcher The async result handler for the pose landmarker.
async_callback The c callback for the pose landmarker.

Methods

close

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close()

Closes the PoseLandmarker.

create_from_model_path

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@classmethod
create_from_model_path(
    model_path: str
) -> 'PoseLandmarker'

Creates a PoseLandmarker object from a model bundle file and the default PoseLandmarkerOptions.

Note that the created PoseLandmarker instance is in image mode, for detecting pose landmarks on single image inputs.

Args
model_path Path to the model.

Returns
PoseLandmarker object that's created from the model file and the default PoseLandmarkerOptions.

Raises
ValueError If failed to create PoseLandmarker object from the provided file such as invalid file path.
RuntimeError If other types of error occurred.

create_from_options

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@classmethod
create_from_options(
    options: mp.tasks.vision.PoseLandmarkerOptions
) -> 'PoseLandmarker'

Creates the PoseLandmarker object from pose landmarker options.

Args
options Options for the pose landmarker task.

Returns
PoseLandmarker object that's created from options.

Raises
ValueError If failed to create PoseLandmarker object from PoseLandmarkerOptions such as missing the model.
RuntimeError If other types of error occurred.

detect

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detect(
    image: mp.Image,
    image_processing_options: Optional[mp.tasks.vision.ImageProcessingOptions] = None
) -> mp.tasks.vision.PoseLandmarkerResult

Performs pose landmarks detection on the given image.

Only use this method when the PoseLandmarker is created with the image running mode.

Args
image MediaPipe Image.
image_processing_options Options for image processing.

Returns
The pose landmarker detection results.

Raises
ValueError If any of the input arguments is invalid.
RuntimeError If pose landmarker detection failed to run.

detect_async

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detect_async(
    image: mp.Image,
    timestamp_ms: int,
    image_processing_options: Optional[mp.tasks.vision.ImageProcessingOptions] = None
) -> None

Sends live image data to perform pose landmarks detection.

The results will be available via the "result_callback" provided in the PoseLandmarkerOptions. Only use this method when the PoseLandmarker is created with the live stream running mode.

Only use this method when the PoseLandmarker is created with the live stream running mode. The input timestamps should be monotonically increasing for adjacent calls of this method. This method will return immediately after the input image is accepted. The results will be available via the result_callback provided in the PoseLandmarkerOptions. The detect_async method is designed to process live stream data such as camera input. To lower the overall latency, pose landmarker may drop the input images if needed. In other words, it's not guaranteed to have output per input image.

The result_callback provides:

  • The pose landmarker detection results.
  • The input image that the pose landmarker runs on.
  • The input timestamp in milliseconds.

Args
image MediaPipe Image.
timestamp_ms The timestamp of the input image in milliseconds.
image_processing_options Options for image processing.

Raises
ValueError If the current input timestamp is smaller than what the pose landmarker has already processed.

detect_for_video

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detect_for_video(
    image: mp.Image,
    timestamp_ms: int,
    image_processing_options: Optional[mp.tasks.vision.ImageProcessingOptions] = None
) -> mp.tasks.vision.PoseLandmarkerResult

Performs pose landmarks detection on the provided video frame.

Only use this method when the PoseLandmarker is created with the video running mode.

Only use this method when the PoseLandmarker is created with the video running mode. It's required to provide the video frame's timestamp (in milliseconds) along with the video frame. The input timestamps should be monotonically increasing for adjacent calls of this method.

Args
image MediaPipe Image.
timestamp_ms The timestamp of the input video frame in milliseconds.
image_processing_options Options for image processing.

Returns
The pose landmarker detection results.

Raises
ValueError If any of the input arguments is invalid.
RuntimeError If pose landmarker detection failed to run.

__enter__

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__enter__()

Returns self upon entering the runtime context.

__exit__

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__exit__(
    exc_type, exc_value, traceback
)

Shuts down the MediaPipe task instance on exit of the context manager.

Args
exc_type The exception type that caused the context manager to exit.
exc_value The exception value that caused the context manager to exit.
traceback The exception traceback that caused the context manager to exit.

Raises
RuntimeError If the MediaPipe PoseLandmarker task failed to close.