Okay, I'm trying to create the inverse filter for a blur filter (not the usual sharpen filter). I have the forward transform matrix (taking a vector of all the pixels), and I want to invert it.

Computing the inverse of a matrix is one of the most important operations in machine learning. If some matrix A has shape n-by-n, then its inverse matrix Ai is n-by-n and the matrix product of Ai * A ...

Dozens of machine learning algorithms require computing the inverse of a matrix. Computing a matrix inverse is conceptually easy, but implementation is one of the most difficult tasks in numerical ...