Block operations in digital signal processing with application to TV coding

Abstract

Block operations make it possible to merge into one single multiplication many operations like filtering, downsampling, orthogonal transforms, etc. It is shown in the particular case of TV processing that the resulting effects of a block operation on small nonoverlapping blocks are very similar to the classical DSP operations based on convolutional and Fourier concepts. Step responses are presesented which illustrate these performances in the case of conversion of standard from 4 : 2 : 2 to 3 : 1 : 1. Simulations results have shown no visible impairment. © 1987.