[1]罗钧 焦荣梅.一种块效应图像的处理方法[J].计算机技术与发展,2007,(10):37-39.
　LUO Jun,JIAO Rong-mei.A Method for Improving Blocking Effect Image[J].,2007,(10):37-39.
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一种块效应图像的处理方法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2007年10期
页码:
37-39
栏目:
智能、算法、系统工程
出版日期:
1900-01-01

文章信息/Info

Title:
A Method for Improving Blocking Effect Image
文章编号:
1673-629X（2007）10-0037-03
作者:
罗钧 焦荣梅
重庆大学光电技术及系统教育部重点实验室
Author(s):
LUO Jun;  JIAO Rong-mei
Ministry of Education Key Laboratory of Opto - Electronic Technology and System, Chongqing University
关键词:
DCT; 块效应; 滤波; 后处理
Keywords:
DCT;  blocking effect;  filtering;  post - processing
分类号:
TP391.4
文献标志码:
A
摘要:
DCT变换以其优良特性被图像和视频的数据压缩编码所广泛采用。通常先把图像分成8×8的块，然后再对图像块做DCT变换，之后再对DCT系数进行量化，以压缩掉视觉不敏感的高频信号。而粗糙的量化常常会导致解码图像产生块效应、振铃现象等问题，从而影响图像的视觉质量。在分析块效应产生原因的基础上，着重介绍了一种有效改善块效应图像质量的处理方法。由于块效应图像在不同的区域有不同的表现形式，因此可以根据区域各自的纹理特点采取相应的处理方法。实验证明，这种处理方法能够有效消除块效应，同时对图像的亮度和细节损失不大
Abstract:
For its fine performance, DCT transform is widely used in the compression and coding method of image and video data. Generally, the image data are divided into several 8 × 8 blocks, and then the data of the image blocks are transformed to DCT data. After that, the data transformed by DCT, namely DCT transform coefficients are coded after quantization which can compressed the high frequency signals. While rough quantization will result in blocking effect and ring effect in the reconstructed image and the visual quality of the image will be affected badly. Analyzes how the blocking effect raised firstly, and then stresses the algorithm using to weaken the blocking effect. Because the regions of the image have different texture characters, the methods should differ from each other. The experiments demonstrates that this method can remove the blocking effect effectively without blurring the details and lighmess of the image

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备注/Memo

备注/Memo:
罗钧（1963-），男，重庆人，副教授，主要从事智能仪器系统和数码产品研究与开发
更新日期/Last Update: 1900-01-01