The operation is a convolve operation with
an appropriate default kernel.
Example
Description
This is a convolve operation with the kernel
-1
-1
-1
2
2
2
-1
-1
-1
Options
kernel:
The number of rows and columns of the kernel must be
odd. Each row must
have the same number of elements. normalize:
If normalize is choosen the values
in the matrix are divided by their sum to preserve the brightness of
the image.