roberts-pos-diag

roberts_pos_diag

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