New adaptive postprocessing to remove blocking artifacts for DCT coded image

Jin Wang, Jongho Kim, Jechang Jeong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To remove blocking artifacts, this paper proposes a novel adaptive postprocessing method in Block-based Discrete Cosine Transform (BDCT) coded images and presents a framework, which is a serial-concatenation of a simple deblocking filter and a constraint set based on the POCS algorithm. At first, we classify the simple deblocking filter by an adaptive threshold depending on local statistical properties, and in the meantime, update block types appropriately by a simple rule, which affects the performance of deblocking progresses decisively. Secondly, a quantization constraint set (QCS) based on the projection onto convex sets (POCS) algorithm is introduced. At last, comprehensive experiments indicate that the proposed algorithm outperforms a large number of deblocking methods in the literature, in terms of evaluation of PSNR and subjective visual qualities.

Original languageEnglish
Title of host publicationSITIS 2008 - Proceedings of the 4th International Conference on Signal Image Technology and Internet Based Systems
Pages352-358
Number of pages7
DOIs
Publication statusPublished - 2008 Dec 1
Event4th International Conference on Signal Image Technology and Internet Based Systems, SITIS 2008 - Bali, Indonesia
Duration: 2008 Nov 302008 Dec 3

Publication series

NameSITIS 2008 - Proceedings of the 4th International Conference on Signal Image Technology and Internet Based Systems

Other

Other4th International Conference on Signal Image Technology and Internet Based Systems, SITIS 2008
CountryIndonesia
CityBali
Period08/11/3008/12/3

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Wang, J., Kim, J., & Jeong, J. (2008). New adaptive postprocessing to remove blocking artifacts for DCT coded image. In SITIS 2008 - Proceedings of the 4th International Conference on Signal Image Technology and Internet Based Systems (pp. 352-358). [4725826] (SITIS 2008 - Proceedings of the 4th International Conference on Signal Image Technology and Internet Based Systems). https://doi.org/10.1109/SITIS.2008.61