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Improved DCT-domain Color Image Enhancement through Anisotropic Diffusion
Wan Yi ,Ma Yafeng * #
Institute for Signals and Information Processing，Lanzhou University
*Correspondence author
#Submitted by
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Funding: none
Opened online:28 December 2009
Accepted by: none
Citation: Wan Yi ,Ma Yafeng .Improved DCT-domain Color Image Enhancement through Anisotropic Diffusion[OL]. [28 December 2009] http://en.paper.edu.cn/en_releasepaper/content/38136
 
 
Color image enhancement directly in the DCT domain is an efficient approach in high speed data transmission. However, such methods often suffer from blocking artifact due to inappropriate scaling between adjacent blocks. We propose an improved method based on anisotropic diffusion that overcomes this difficulty. Simulation results show that the proposed method can effectively remove blocking artifact introduced during the DCT coefficient scaling stage, resulting in much improved performance over some of state of the art methods.
Keywords:DCT;color image enhancement;blocking artifact;anisotropic diffusion
 
 
 

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