A unified framework for optimal multiple video object bit allocation

Zhenzhong Chen; King Ngi Ngan

doi:10.1117/12.632499

24 June 2005 A unified framework for optimal multiple video object bit allocation

Zhenzhong Chen, King Ngi Ngan

Proceedings Volume 5960, Visual Communications and Image Processing 2005; 59601X (2005) https://doi.org/10.1117/12.632499
Event: Visual Communications and Image Processing 2005, 2005, Beijing, China

Abstract

MPEG-4 supports object-level video coding. It is a challenge to design an optimal bit allocation strategy which considers not only how to distribute bits among multiple video objects (MVO's) but also how to achieve optimization between the texture and shape information. In this paper, we present a uniform framework for optimal multiple video object bit allocation in MPEG-4. We combine the rate-distortion (R-D) models for the texture and shape information of arbitrarily shaped video objects to develop the joint texture-shape rate-distortion models. The dynamic programming (DP) technique is applied to optimize the bit allocation for the multiple video objects. The simulation results demonstrate that the proposed joint texture-shape optimization algorithm outperforms the MPEG-4 verification model on the decoded picture quality.

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Zhenzhong Chen and King Ngi Ngan "A unified framework for optimal multiple video object bit allocation", Proc. SPIE 5960, Visual Communications and Image Processing 2005, 59601X (24 June 2005); https://doi.org/10.1117/12.632499

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KEYWORDS

Video

Distortion

Computer programming

Chromium

Video coding

Optimization (mathematics)

Quantization

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