LOSSLESS VIDEO CODING USING MC BASED 3D PREDICTION OPTIMIZED FOR EACH FRAME (Image Processing and Coding)(International Workshop On Advanced Image Technology (IWAIT2004))

概要

論文の詳細を見る
This paper proposes an efficient lossless coding scheme for video signals. The coding scheme utilizes a novel block-adaptive 3D prediction method which predicts a video signal at each pel based on both the current and previous frames. In practice the previous frame is adaptively shifted block-by-block according to a motion vector detected in each block. The resulting prediction errors are encoded using a kind of context-adaptive arithmetic coding. In order to improve coding efficiency, not only prediction coefficients of the 3D linear prediction but also motion vectors are iteratively optimized for each frame so that a coding rate of prediction errors can have a minimum. Experimental results show that coding rates of the proposed scheme are 18 - 55 % lower than those of a JPEG-LS based intraframe coding scheme.
社団法人電子情報通信学会の論文
2004-01-05