关键词: 计算机图像处理, 运动估计, 梯度下降, 自适应, 抽取模式, 计算冗余

Abstract:

A new method of pixel decimation for the motion estimation is presented in this paper.This method improves the onedimension gradient descent algorithm (ODGDA) first, and then selects appropriate decimation patterns to reduce the redundancy in the motion estimation criterion computation.This method proposes five decimation patterns based on the gradient descent direction, and it can select the decimation pattern adaptively during the motion estimation.

Key words: computer , image , processing,  , motion , estimation,  , gradient , descent,  , adaptive,  , decimation , pattern,  , computational , redundancy