14 March 2005 Rate distortion performance of leaky prediction layered video coding: theoretic analysis and results
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Abstract
Leaky prediction layered video coding (LPLC) incorporates a scaled version of the enhancement layer in the motion compensated prediction (MCP) loop, by using a leaky factor between 0 and 1, to balance between coding efficiency and error resilience performance. In this paper, we address the theoretic analysis of LPLC using two different approaches: the one using rate distortion theory and the one using quantization noise modeling. In both approaches, an alternative block diagram of LPLC is first developed, which significantly simplifies the theoretic analysis. We consider two scenarios of LPLC, with and without prediction drift in the enhancement layer, and obtain two sets of rate distortion functions in closed form for both scenarios. We evaluate both closed form expressions, which are shown to conform with the operational results.
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Yuxin Liu, Yuxin Liu, Josep Prades-Nebot, Josep Prades-Nebot, Gregory W. Cook, Gregory W. Cook, Paul Salama, Paul Salama, Edward J. Delp, Edward J. Delp, "Rate distortion performance of leaky prediction layered video coding: theoretic analysis and results", Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); doi: 10.1117/12.591406; https://doi.org/10.1117/12.591406
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