In this paper,the causes for compression artifacts are analyzed theoretically,and the metrics to evaluate the three major types of compression artifacts(ringing,blocking,edge blur) are introduced.

• 本文从理论上分析了压缩损伤产生的原因,并提出了可对三种主要压缩损伤(振铃现象、块效应和边缘模糊)进行定量测量的方法。