Lossless DCT Picture Coding

Abstract

We propose lossless DCT coding in which the transform matrix is modified with short length words, then reversible quantizer is introduced for transform vectors The modification makes lossless com pression coding possible An 8 by 8 lossless DCT picture coding system is shown along with simulation results The algorithm can be applied to a contribution transfer system It is important that lossless DCT is compatible with conventional DCT