roberts-positive-diagonal

roberts_positive_diagonal

skimage.filters.roberts_positive_diagonal(*args, **kwargs) [source]

Deprecated function. Use skimage.filters.roberts_pos_diag instead.

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 absolute Robert’s edge map.

Notes

We use the following kernel and return the absolute value of the result at each point:

1   0
0  -1