A Novel Adaptive Pixel Decimation for Block Motion Vector Estimation

概要

論文の詳細を見る
This paper presents a novel approach to pixel decimation for motion estimation in video coding. Early techniques of pixel decimation use regular pixel patterns to evaluate matching criterion. Recent techniques use adaptive pixel patterns and have achieved better efficiency. However, these adaptive techniques require an initial division of a block into a set of uniform regions and therefore are only locally-adaptive in essence. In this paper, we present a globally-adaptive scheme for pixel decimation, in which no regions are fixed at the beginning and pixels are selected only if they have features important to the determination of a match. The experiment results show that when no more than 40 pixels are selected out of a 16×l6 block, this approach achieves a better search accuracy by 13-22% than the previous locally-adaptive methods which also use features.
社団法人電子情報通信学会の論文
1999-01-25