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Proceedings Paper

A novel VLC based on second-run-level coding and dynamic truncation
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Paper Abstract

In this paper, a novel VLC method based on 2nd-run-level coding and dynamic truncation is proposed to compress the DCT coefficients efficiently. In the proposed VLC, 2nd-run-level is first employed, following the traditional run-level coding, to further reduce the considerable redundancy existing in the original level and run sequences. In order to achieve a higher degree of context adaptability and coding efficiency, dynamic truncation is introduced and employed in the sequential coding of 2D symbols without large amounts of 2D-VLC tables required, though adding extra coding complexity to some extent. Adaptive EG/GR selection is also presented and recommended since it brings extra improvement in compression efficiency without increasing any computational complexity. Experimental results show that when compared with context-based 2D-VLC, the proposed VLC method gains 0.25 dB ~0.79 dB in PSNR and achieves 5.30% ~ 11.58% improvement in bit rate reduction.

Paper Details

Date Published: 19 January 2006
PDF: 9 pages
Proc. SPIE 6077, Visual Communications and Image Processing 2006, 607726 (19 January 2006); doi: 10.1117/12.643621
Show Author Affiliations
Chunhui Cui, Huazhong Univ. of Science and Technology (China)
Wenyu Liu, Huazhong Univ. of Science and Technology (China)
Xin Jin, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6077:
Visual Communications and Image Processing 2006
John G. Apostolopoulos; Amir Said, Editor(s)

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