分级压缩 meaning in English

stage compression
stagecompression

The motion - based layered compression scheme in this dissertation is different from the traditional full picture - process method , using different encoding strategy by classify marcoblock in temporal motion , a high encoding efficiency is achieved in experiment
本文提出的基于运动的分级压缩算法，打破了以往时空伸缩全帧处理的概念，实验中以块为单位按时间频率分等级，分别采用不同的编码策略，达到较好的编码效率。