Localized filtering for artifact removal in compressed images

The paper proposes a novel method for coding artifact reduction in compressed images. For removing blocking artifacts, a localized DCT-based filter with condition on the similarity between surrounding blocks is considered. To reduce ringing, a localized fuzzy filter is utilized to avoid the blurry effect of linear filter and painting-like effect of conventional fuzzy filter. To enhance chroma components and reduce the color bleeding, the localized filter for luma component are implemented for the chroma components. Simulations on a wide range of compressed images are performed to verify the effectiveness of the algorithm.

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Dung Trung Vo, Truong Q. Nguyen
• Keywords: Chroma Components, Fuzzy filter, ICASSP 2011, Localized Dct-based filter, Signal Processing