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Video Post-Processing with Adaptive 3-D Filters for Wavelet Ringing Artifact Removal Boštjan MARUŠI  Primo  SKOIRJurij TASI  Andrej KOŠIR Publication IEICE TRANSACTIONS on Information and Systems Vol.E88-D No.5 pp.1031-1040 Publication Date: 2005/05/01 Online ISSN: DOI: 10.1093/ietisy/e88-d.5.1031 Print ISSN: 0916-8532 Type of Manuscript: PAPER Category: Image Processing and Video Processing Keyword: SUSAN filter, video post-processing, coding artifact removal, MC filtering, ringing artifact removal, Full Text: PDF(553KB)>>
Summary: This paper reports on the suitability of the SUSAN filter for the removal of artifacts that result from quantization errors in wavelet video coding. In this paper two extensions of the original filter are described. The first uses a combination of 2-D spatial filtering followed by 1-D temporal filtering along motion trajectories, while the second extension is a pure 3-D motion compensated SUSAN filter. The SUSAN approach effectively reduces coding artifacts, while preserving the original signal structure, by relying on a simple pixel-difference-based classification procedure. Results reported in the paper clearly indicate that both extensions efficiently reduce ringing that is the prevalent artifact perceived in wavelet-based coded video. Experimental results indicate an increase in perceptual as well as objective (PSNR) decoded video quality, which is competitive with state-of-the-art post-processing algorithms, especially when low computational demands of the proposed approach are taken into account. | ||||||||||
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