フレーム毎にMCと3次元予測を最適化する動画像の可逆符号化方式(<小特集>画像の処理と符号化)

概要

論文の詳細を見る
A novel lossless coding scheme for video signals is described. The scheme uses a block-adaptive 3D prediction method that predicts a video signal based on both the current and motion-compensated previous frames. The resulting prediction errors are encoded by using a kind of context-adaptive arithmetic coder. Several coding parameters such as prediction coefficients and motion vectors are iteratively optimized for each frame so that the overall coding rate can be a minimum. Moreover, a quadtree-based variable block-size motion compensation technique is introduced for efficient representation of motion information. Experimental results show that the coding rates of our scheme are 11-17% lower than those of the H. 264-based lossless coding scheme.お詫びと訂正 : 本論文 (pp. 1051〜1058) の1052頁と1053頁を入れ違えておりました. ここにお詫びして訂正版を8月号に掲載いたします.
社団法人映像情報メディア学会の論文
2006-07-01