DMCA
Scalable rate control for MPEG4 video (2000)
| Venue: | Circuits and Systems for Video Tech |
| Citations: | 58 - 1 self |
BibTeX
@INPROCEEDINGS{Lee00scalablerate,
author = {Hung-ju Lee and Tihao Chiang and Senior Member and Ya-qin Zhang},
title = {Scalable rate control for MPEG4 video},
booktitle = {Circuits and Systems for Video Tech},
year = {2000},
pages = {878--894}
}
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Abstract
Abstract—This paper presents a scalable rate control (SRC) scheme based on a more accurate second-order rate-distortion model. A sliding-window method for data selection is used to mitigate the impact of a scene change. The data points for updating a model are adaptively selected such that the statistical behavior is improved. For video object (VO) shape coding, we use an adaptive threshold method to remove shape-coding artifacts for MPEG-4 applications. A dynamic bit allocation among VOs is implemented according to the coding complexities for each VO. SRC achieves more accurate bit allocation with low latency and limited buffer size. In a single framework, SRC offers multiple layers of controls for objects, frames, and macroblocks (MBs). At MB level, SRC provides finer bit rate and buffer control. At multiple VO level, SRC offers superior VO presentation for multimedia applications. The proposed SRC scheme has been adopted as part of the International Standard of the emerging ISO MPEG-4 standard [1], [2]. Index Terms—Bit allocation, MPEG, multiple video object, rate
Keyphrases
scalable rate control mpeg4 video iso mpeg-4 standard statistical behavior multiple vo level low latency scene change accurate second-order rate-distortion model data selection index term bit allocation limited buffer size single framework src scheme mpeg-4 application dynamic bit allocation multiple video object video object buffer control superior vo presentation finer bit rate multiple layer mb level data point sliding-window method shape-coding artifact adaptive threshold method accurate bit allocation international standard coding complexity multimedia application
