Reduction of blocking artifacts for low bit-rate video coding using regularized dequantization

S. M H Song, G. Lee, Sanghoon Sull, Sung-Jea Ko

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

Abstract

Most discrete cosine transform (DCT) based video coding suffer from blocking artifacts where boundaries of 8×8 DCT blocks become visible on decoded images. The blocking artifacts become more prominent as the bit rate is lowered. In this paper, we present a new dequantization technique for discrete cosine transform (DCT) based encoding to sharply reduce the blocking artifacts. Our proposed dequantization scheme, through regularization, sharply reduces blocking artifacts in decoded images. The performance the proposed algorithm is compared to that of the currently specified H.263+ Annex J deblocking filter. The comparison will show visual improvements as well as numerical improvements in terms of the peak-signal-to-noise ratio (PSNR) and the blockiness measure (BM) to be defined.

Original languageEnglish
Title of host publicationIEEE International Conference on Multi-Media and Expo
Pages63-66
Number of pages4
EditionI/MONDAY
Publication statusPublished - 2000 Dec 1
Event2000 IEEE Internatinal Conference on Multimedia and Expo (ICME 2000) - New York, NY, United States
Duration: 2000 Jul 302000 Aug 2

Other

Other2000 IEEE Internatinal Conference on Multimedia and Expo (ICME 2000)
CountryUnited States
CityNew York, NY
Period00/7/3000/8/2

ASJC Scopus subject areas

  • Engineering(all)

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    Song, S. M. H., Lee, G., Sull, S., & Ko, S-J. (2000). Reduction of blocking artifacts for low bit-rate video coding using regularized dequantization. In IEEE International Conference on Multi-Media and Expo (I/MONDAY ed., pp. 63-66)