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小波变换压缩图像的多尺度自适应2D滤波的后处理算法
文伟; 韩华; 彭思龙,
Source Publication计算机辅助设计与图形学学报
2005
Volume17(1) (EI)Issue:2005年01期Pages:59-66
Other Abstractn DWT- based i mage compression ,as t he codi ng rate becomes low,t he Cuality of t he coded i mage degrades severely due to t he Cuantization of wavelet coefficients and t he removal of hi gh-freCuency wavelet coefficients. Especially ,i n t he vici nity of edges,t he ri ngi ng effect i nevitably comes up. I n t his paper ,a multiscale 2D filteri ng met hod based on local pri mary direction is i nvesti gated which may si gnificantly i mprove t he Cuality of t he i mage compressed. By t he met hod,l ocal pri mary direction is detected first ,accordi ng to which t he i mage was filtered adaptively. To ensure t he robust ness of t he detection of t he local pri mary direction ,a circular shift met hod is adopted. To remove t he hi gh-freCuency noises i n all t he bands,t he decoded i mage is enhanced from coarse to fi ne scales. The si mulation results illustrate t hat t he met hod proposed may i mprove t he Cuality and t he visual effect of t he compressed i mages.
Keyword压缩图像后处理 / 小波变换 / 多尺度 / 滤波器 / radon变换 / dct
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/12984
Collection智能制造技术与系统研究中心_多维数据分析
Corresponding Author文伟
Recommended Citation
GB/T 7714
文伟,韩华,彭思龙,. 小波变换压缩图像的多尺度自适应2D滤波的后处理算法[J]. 计算机辅助设计与图形学学报,2005,17(1) (EI)(2005年01期):59-66.
APA 文伟,韩华,&彭思龙,.(2005).小波变换压缩图像的多尺度自适应2D滤波的后处理算法.计算机辅助设计与图形学学报,17(1) (EI)(2005年01期),59-66.
MLA 文伟,et al."小波变换压缩图像的多尺度自适应2D滤波的后处理算法".计算机辅助设计与图形学学报 17(1) (EI).2005年01期(2005):59-66.
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