roberts_pos_diag
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skimage.filters.roberts_pos_diag(image, mask=None)
[source] -
Find the cross edges of an image using Roberts’ cross operator.
The kernel is applied to the input image to produce separate measurements of the gradient component one orientation.
Parameters: image : 2-D array
Image to process.
mask : 2-D array, optional
An optional mask to limit the application to a certain area. Note that pixels surrounding masked regions are also masked to prevent masked regions from affecting the result.
Returns: output : 2-D array
The Robert’s edge map.
Notes
We use the following kernel:
1 0 0 -1
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