23 June 2003 SNR scalability by transform coefficient refinement for block-based video coding
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Proceedings Volume 5150, Visual Communications and Image Processing 2003; (2003) https://doi.org/10.1117/12.503252
Event: Visual Communications and Image Processing 2003, 2003, Lugano, Switzerland
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.
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Till Halbach, Till Halbach, Thomas R. Fischer, Thomas R. Fischer, } "SNR scalability by transform coefficient refinement for block-based video coding", Proc. SPIE 5150, Visual Communications and Image Processing 2003, (23 June 2003); doi: 10.1117/12.503252; https://doi.org/10.1117/12.503252
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