Compression Performance of Reversible Component Transform Method for Color Image

Abstract

In coding of color images, R, G and B signals are converted into luminance Y and chrominance Cr, and Cb components. In the lossless mode, the reversible component transform method has to be introduced. Some reversible component transform methods, such as the method in JPEG2000 or FRExt in H.264, have been proposed. In this study we consider the coding performance of these reversible component transform methods. Moreover we propose a new reversible component transform method which approximates Y signal more preciously. We report that the comparison result of our proposed method to the conventional method.