conv-layer.ipynb

[djholty]

"Note that this kernel is a special case of a finite difference operator. At location (𝑖,𝑗) it computes 𝑥𝑖,𝑗−𝑥(𝑖+1),𝑗 , 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.