Approximate convolution using DCT coefficient multipliers

Abstract

DCT-domain processing, filtering, convolution, image enhancement, quantization tables We develop a method for designing DCT coefficient multipliers in order to approximate the operation of 2D convolution of an image with a given kernel. The method is easy to implement on compressed formats of DCT-based compression methods (JPEG, MPEG, H.261) by applying… (More)
DOI: 10.1109/76.709404

Topics

6 Figures and Tables