Study on Post-Processing Method for Transform Coding Image Blocking Effect
Zhihang Hao · Guangdian gongcheng · 2002
A fast post-processing method for blocking effect is proposed based on the adaptive post-processing method DAPT (DCT-based Adaptive Post-processing Technique) presented by H.Paek et al and the variation characteristics of image pixel gradient. The experimental results in image processing by JPEG(Joint Photographic Expert Group) decoding show that under the condition of maintaining the image quality obtained in adaptive post-processing technique the new method can reduce DCT(Discrete Cosine Transform)operation time for more than half and the processing speed for decoding image blocking effect has been greatly improved.