Kernel / convolution matrix

[jasonwebb]

New topic to add to the Useful code patterns and techniques section

In the context of image processing, a kernel is a convolution matrix applied to individual pixels to create effects like blurring, sharpening, edge detection, embossing, and more.

Convolution matrices are a math topic related to this - maybe it deserves a section in Math and physics topics?

• https://en.wikipedia.org/wiki/Kernel_(image_processing)