binary_opening(image, selem=None, out=None)
This function returns the same result as greyscale opening but performs faster for binary images.
The morphological opening on an image is defined as an erosion followed by a dilation. Opening can remove small bright spots (i.e. "salt") and connect small dark cracks. This tends to "open" up (dark) gaps between (bright) features.
Binary input image.
The neighborhood expressed as a 2-D array of 1's and 0's. If None, use a cross-shaped structuring element (connectivity=1).
The array to store the result of the morphology. If None is passed, a new array will be allocated.
The result of the morphological opening.
Return fast binary morphological opening of an image.
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