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Proceedings Paper

Improved single VO rate control for constant bit-rate applications using MPEG-4
Author(s): Thomas Meier; King N. Ngan
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Paper 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.

Paper Details

Date Published: 30 May 2000
PDF: 12 pages
Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); doi: 10.1117/12.386685
Show Author Affiliations
Thomas Meier, Univ. of Western Australia (United States)
King N. Ngan, Univ. of Western Australia (Australia)

Published in SPIE Proceedings Vol. 4067:
Visual Communications and Image Processing 2000
King N. Ngan; Thomas Sikora; Ming-Ting Sun, Editor(s)

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