Category "convolution"

Why do edge detection filters sum to 0 whereas blur filters sum to 1?

I am now learning about filters in computer vision. I can see that the elements of the kernel for edge detection sum to 0, whereas for blurring sum to 1. I am w

Optimization of a short-length cyclic convolution

I have two sequences of 8 unsigned bytes and I need to compute their cyclic convolution, which yields 8 unsigned 19 bits integers. As I repeat this million time

How does OpenCV's DFT-based filter2D actually work?

I have issues comprehending how the filter2D method of the the OpenCV library actually works. The "standard" direct version for small kernel sizes is clear, but

Is there a Python equivalent of MATLAB's conv2 function?

Does Python or any of its modules have an equivalent of MATLAB's conv2 function? More specifically, I'm interested in something that does the same computation a