SNR scalability by transform coefficient refinement for block-based video coding

Till Halbach; Thomas R. Fischer

doi:10.1117/12.503252

23 June 2003 SNR scalability by transform coefficient refinement for block-based video coding

Till Halbach, Thomas R. Fischer

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.

Citation Download Citation

Till Halbach and 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); https://doi.org/10.1117/12.503252

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