vpi.Image.fastcorners

Image.fastcorners(self: vpi.Image, backend: vpi.Backend = vpi.Backend.DEFAULT, out: vpi.Array = None, circle_radius: int = 3, arc_length: int = 9, intensity_threshold: float = 10.0, non_max_suppression: bool = True, border: vpi.Border = vpi.Border.LIMITED, stream: vpi.Stream = None) → vpi.Array

Runs FAST corner detector on the image.

See also

Refer to the algorithm explanation for more details and usage examples.

Parameters

  • out (vpi.Array, optional) – Array that will receive the detected corners. Array size is updated with the number of corners found.

  • circle_radius (int, optional) – Circle radius around a pixel to check if it is a corner.

  • arc_length (int, optional) – Arc length in pixels over the circle to check central pixel is a corner.

  • intensity_threshold (float, optional) – Intensity threshold to select a pixel as being part of the arch in circle around a corner keypoint candidate.

  • non_max_suppression (bool, optional) – Whether to apply non-maximum suppression to remove corners too close together.

  • border (vpi.Border, optional) – The border extension used by the algorithm.

  • backend (vpi.Backend, optional) – The backend to be used by the algorithm.

  • stream (vpi.Stream, optional) – The stream to be used by the algorithm.

Returns

The output array with the corners computed by the algorithm.

Return type

vpi.Array

Caution

Restrictions to several arguments may apply. Check the C API references of the submit function and the group concepts for more details.