skimage 0.17.2

ParametersReturnsBackRef
white_tophat(image, selem=None, out=None)

The white top hat of an image is defined as the image minus its morphological opening. This operation returns the bright spots of the image that are smaller than the structuring element.

Parameters

image : ndarray

Image array.

selem : ndarray, optional

The neighborhood expressed as an array of 1's and 0's. If None, use cross-shaped structuring element (connectivity=1).

out : ndarray, optional

The array to store the result of the morphology. If None is passed, a new array will be allocated.

Returns

out : array, same shape and type as `image`

The result of the morphological white top hat.

Return white top hat of an image.

See Also

black_tophat

Examples

This example is valid syntax, but we were not able to check execution
>>> # Subtract grey background from bright peak
... import numpy as np
... from skimage.morphology import square
... bright_on_grey = np.array([[2, 3, 3, 3, 2],
...  [3, 4, 5, 4, 3],
...  [3, 5, 9, 5, 3],
...  [3, 4, 5, 4, 3],
...  [2, 3, 3, 3, 2]], dtype=np.uint8)
... white_tophat(bright_on_grey, square(3)) array([[0, 0, 0, 0, 0], [0, 0, 1, 0, 0], [0, 1, 5, 1, 0], [0, 0, 1, 0, 0], [0, 0, 0, 0, 0]], dtype=uint8)
See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

skimage.morphology.grey.black_tophat skimage.morphology.grey.white_tophat

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File: /skimage/morphology/grey.py#355
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