APPARATUS AND A METHOD OF CODING AND DECODING VIDEO FOR A COLOR IMAGE TO IMPROVE EFFICIENCY IN CODING AND DECODING THE VIDEO

摘要

PURPOSE: An apparatus and a method of coding and decoding video for a color image to improve efficiency in coding and decoding the video by using inter-plane prediction. CONSTITUTION: The first motion prediction part(100) calculates the first prediction residue image of an input image on a basis of a motion prediction result of the input image. An image information determination part(110) sets one of color components in an R-G-B image as a color reference component, decides whether the input image is the R-G-B image or a Y-Cb-Cr image and determines whether a component of the input image is the reference color component. The second motion prediction part(120) performs motion prediction of the first prediction residue image and thereby calculates the second prediction residue image in case that the input image is the R-G-B image and the color component of the input image is not the reference color component. A coding part(130) codes the first and second prediction residue images.