Compression artifact reduction with adaptive bilateral filtering

Ming Zhang; Bahadir K. Gunturk

doi:10.1117/12.806271

19 January 2009 Compression artifact reduction with adaptive bilateral filtering

Ming Zhang, Bahadir K. Gunturk

Proceedings Volume 7257, Visual Communications and Image Processing 2009; 72571A (2009) https://doi.org/10.1117/12.806271
Event: IS&T/SPIE Electronic Imaging, 2009, San Jose, California, United States

Abstract

In this paper, we present a spatially adaptive method to reduce compression artifacts observed in block discrete cosine transform (DCT) based image/video compression standards. The method is based on the bilateral filter, which is very effective in denoising images without smoothing edges. When applied to reduce compression artifacts, the parameters of the bilateral filter should be chosen carefully to have a good performance. To avoid over-smoothing texture regions and to effectively eliminate blocking and ringing artifacts, in this paper, texture regions and block boundary discontinuities are first detected; these are then used to control/adapt the spatial and intensity parameters of the bilateral filter. Experiments show that the proposed method improves over the standard non-adaptive bilateral filter visually and quantitatively.

Citation Download Citation

Ming Zhang and Bahadir K. Gunturk "Compression artifact reduction with adaptive bilateral filtering", Proc. SPIE 7257, Visual Communications and Image Processing 2009, 72571A (19 January 2009); https://doi.org/10.1117/12.806271

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