Improved single VO rate control for constant bit-rate applications using MPEG-4

Thomas Meier; King N. Ngan

doi:10.1117/12.386685

30 May 2000 Improved single VO rate control for constant bit-rate applications using MPEG-4

Thomas Meier, King N. Ngan

Proceedings Volume 4067, Visual Communications and Image Processing 2000; (2000) https://doi.org/10.1117/12.386685
Event: Visual Communications and Image Processing 2000, 2000, Perth, Australia

Abstract

This paper considers single video object rate control for MPEG-4 and presents a new rate control algorithm based on the quadratic rate-distortion model. The major innovation are a novel constraint for the least mean square estimation of the model parameters of the rate-distortion function, a new measure for the encoding complexity, and an efficient frame skipping strategy. An extension of the proposed rate control scheme to sequences with multiple video objects is possible. Experiments that were carried out on different video sequences showed an increase in the average PSNR of 1.2 dB and, more significantly, a reduction in the number of skipped frames of about 25% compared to the rate control in the MPEG-4 video verification model. The likelihood of buffer overflows was also greatly reduced for our proposed technique.

Citation Download Citation

Thomas Meier and King N. Ngan "Improved single VO rate control for constant bit-rate applications using MPEG-4", Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); https://doi.org/10.1117/12.386685

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