
Discrete Cosine Transform, Type IVThe discrete cosine transform of type IV is given by the matrix The following structured, sparse matrix factorization represents a fast algorithm for a DCT, type IV, size 8, and has been automatically generated (even in the presented Latex format) using the package AREP. O.k., you where not looking for math, but hoping to find good code for this (or other) transforms? No problem, get SPIRAL. 