用维纳滤波改善零树编码图象的质量  

Improve the Quality of Zero-tree Encoded Images using Wiener Filtering

作　　者：邓锦全[1] 蔡汉添[1] 

机构地区：[1]华南理工大学电子与通信工程系,广东广州510641

出　　处：《电路与系统学报》2000年第4期70-72,共3页Journal of Circuits and Systems

摘　　要：基于零树小波编码的图象在高压缩比时会产生振铃失真。本文分析了失真的原因，提出采用边沿增强与一维维纳滤波相结合的方法减少失真。实验结果表明，这种方法简单有效，能够提高图象的主观质量与客观指标PSNR。Ringing distortion would exist in zero-tree wavelet encoded images with high compression-ratio. The cause leading to the distortion is investigated and a scheme of solution using edge enhancement combined with 1D-Wiener filtering is proposed to reduce the distortion. Experimental results demonstrate that the quality of such images can be improved effectively both in subjective and objective point of view.

关 键 词：小波变换 零树编码 图象增强 维纳滤波 

分 类 号：TN911.73[电子电信—通信与信息系统] TN919.81[电子电信—信息与通信工程]