Joint texture-shape optimization for MPEG-4 multiple video objects

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 R-D models. The dynamic programming 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. Index Terms--Bit ailocation, joint texture-shape optimization, MPEG-4, multiple video object, rate control, rate-distortion (R-D).