"Note that this kernel is a special case of a finite difference operator. At location (π,π) it computes π₯π,πβπ₯(π+1),π , i.e., it computes the difference between the values of horizontally adjacent pixels. "
For this example of the finite difference operation, I think it computes x i,j - x i,j+1 instead.
"Note that this kernel is a special case of a finite difference operator. At location (π,π) it computes π₯π,πβπ₯(π+1),π , i.e., it computes the difference between the values of horizontally adjacent pixels. "
For this example of the finite difference operation, I think it computes x i,j - x i,j+1 instead.