An Adaptive De-blocking Algorithm in Low Bit-rate Video Coding 


Vol. 29,  No. 4, pp. 505-513, Apr.  2004


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  Abstract

Most video codecs including the international standards use the block-based hybrid structure for efficient compression. But for low bit-rate applications such as video transmission through wireless channels, the blocking artifacts degrade image quality seriously. In this paper, we propose an adaptive de-blocking algorithm using characteristics of the block boundaries. Blocking artifacts contain the high frequency components near the block boundaries, therefore the lowpass filtering can remove them. However, simple lowpass filtering results into blurring by removing important information such as edges. To overcome this problem, we determine the modes depending upon the characteristics of pixels adjacent to block boundary then proper filter is applied to each area. Simulation results show that proposed method improves de-blocking performance compared to that of MPEG-4.

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  Cite this article

[IEEE Style]

J. Kim, H. Kim, J. Jeong, "An Adaptive De-blocking Algorithm in Low Bit-rate Video Coding," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 4, pp. 505-513, 2004. DOI: .

[ACM Style]

Jongho Kim, Haewook Kim, and Jechang Jeong. 2004. An Adaptive De-blocking Algorithm in Low Bit-rate Video Coding. The Journal of Korean Institute of Communications and Information Sciences, 29, 4, (2004), 505-513. DOI: .

[KICS Style]

Jongho Kim, Haewook Kim, Jechang Jeong, "An Adaptive De-blocking Algorithm in Low Bit-rate Video Coding," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 4, pp. 505-513, 4. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880