A model-based rate allocation mechanism for wavelet-based embedded image and video coding

Ya Hui Yu*, Chun-Jen Tsai

*此作品的通信作者

研究成果: Conference article同行評審

1 引文 斯高帕斯(Scopus)

摘要

In wavelet-based embedded coding for still images and/or videos, a trade-off between scalability and coding efficiency is achieved via layered-packetization of the embedded bitstreams optimized for several target operating bitrate points. This process is called rate allocation (tier-2 coding). The typical rate allocation mechanism is formulated as a rate-distortion optimization problem and a simple searching method with slow convergence rate is used. In this paper, a highly efficient model-based rate allocation mechanism is proposed. The algorithm is base on the adaptive analysis of the relationship between rate and distortion of the image/video data. Experiments conducted on a scalable video codec show that the time to obtain the optimal solution is greatly reduced. The techniques can be applied to various wavelet-based embedded image and video coding schemes, such as JPEG2000 and scalable video coding.

原文English
文章編號1466023
頁(從 - 到)6066-6069
頁數4
期刊Proceedings - IEEE International Symposium on Circuits and Systems
DOIs
出版狀態Published - 2005
事件IEEE International Symposium on Circuits and Systems 2005, ISCAS 2005 - Kobe, Japan
持續時間: 23 5月 200526 5月 2005

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