vuba.shrink

vuba.shrink(img, by=50)

Mask an image to a new roi.

Parameters

• img (ndarray) – Grayscale image to reduce the roi for.

• by (int) – Number of pixels to reduce roi by, default is 50.

Returns

img – Image with reduced roi.

Return type

ndarray

Raises

ValueError – If the supplied image is not grayscale.

Notes

This function will shrink the roi by a uniform amount on all four sides of an image, and not to a specific region within the image.

See also

Mask, rect_mask, circle_mask, contouer_mask