摘要
基于H.Paek等人提出的自适应后处理方法DAPT(DCT-based Adaptive Post-processing Technique)和图像像素梯度的变化特性,提出了一种快速块效应后处理方法。通过对JPEG解码图像处理实验的结果表明:新方法在保持DAPT处理的图像质量条件下,减少DCT( Discrete Cosine Transform ) 运算次数一半以上,大大地提高了解码图像块效应的处理速度。
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.
出处
《光电工程》
CAS
CSCD
北大核心
2002年第2期67-70,共4页
Opto-Electronic Engineering
