Lossless image encoding/decoding method and apparatus using intercolor plane prediction

摘要

A lossless image encoding/decoding method and apparatus are disclosed. The lossless color image encoding apparatus comprises: a motion prediction image generator estimating a motion between a previous image and a current image and outputting a corresponding prediction image; a residue generator generating a temporal residue corresponding to a difference between a prediction image generated by the motion prediction image generator and the corresponding block of the current image with respect to different components of the color image; a prediction residue generator generating prediction residues by defining a linear-transformed value of one residue among the different components of the color image output from the residue generator as a predictor and using differences between each of the residues of the other components and the predictor; and an entropy encoder receiving the residue forming the predictor from the residue generator and the prediction residues from the prediction residue generator and generating a bitstream.