18-2 A Study of Motion Revision Method Based on Macroblock Type and Estimate of Coding Bits

Abstract

This paper proposes the motion detection method based on evaluation of coding bits and macroblock type. Generally speaking, if the macroblock type is "flat" or "edge", block-matching method chooses a lot of candidate motion vectors. It is possible that the most suitable vectors are not chosen. So we prepared the evaluation function for expressing coding bits, and we detected the motion vectors by minimizing it. As a result of computer simulation, we confirmed that subjective picture quality of proposed method improved in comparison with that of TM5.