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Proceedings Paper

SNR scalability by transform coefficient refinement for block-based video coding
Author(s): Till Halbach; Thomas R. Fischer
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Paper Abstract

Various techniques for SNR scalability in hybrid block-based video coding exist in the literature and in different standards. A new approach based on transform coefficient refinement is proposed in this article. The coefficient difference is computed after quantization, subsequently entropy-encoded, and transmitted for reconstruction of a high-quality layer at the decoder. The approach achieves in most cases only a moderate increase in bit rate as compared to other schemes. The bit rate of our two-layer framework converges towards the rate of a single-layer system as the quality gap between both layers increases. The gains come at the cost of increased computational complexity and memory requirements.

Paper Details

Date Published: 23 June 2003
PDF: 6 pages
Proc. SPIE 5150, Visual Communications and Image Processing 2003, (23 June 2003); doi: 10.1117/12.503252
Show Author Affiliations
Till Halbach, Norwegian Univ. of Science and Technology (Norway)
Thomas R. Fischer, Washington State Univ. (United States)

Published in SPIE Proceedings Vol. 5150:
Visual Communications and Image Processing 2003
Touradj Ebrahimi; Thomas Sikora, Editor(s)

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