Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/290
Title: An efficient low bit-rate video-coding algorithm focusing on moving regions
Authors: Wong, KW
Lam, KMK 
Siu, WC 
Keywords: Motion estimation and compensation
Moving region detection
Video coding
Issue Date: Oct-2001
Publisher: IEEE
Source: IEEE transactions on circuits and systems for video technology, Oct. 2001, v. 11, no. 10, p. 1128-1134 How to cite?
Journal: IEEE transactions on circuits and systems for video technology 
Abstract: Block-based motion estimation and compensation are the most popular techniques for video coding. However, as the shape and the structure of an object in a picture are arbitrary, the performance of such conventional block-based methods may not be satisfactory. In this paper, a very low bit-rate video coding algorithm that focuses on moving regions is proposed. The aim is to improve the coding performance, which gives better subjective and objective quality than that of the conventional coding methods at the same bit rate. Eight patterns are pre-defined to approximate the moving regions in a macroblock. The patterns are then used for motion estimation and compensation to reduce the prediction errors. Furthermore, in order to increase the compression performance, the residual errors of a macroblock are rearranged into a block with no significant increase of high-order DCT coefficients. As a result, both the prediction efficiency and the compression efficiency are improved.
URI: http://hdl.handle.net/10397/290
ISSN: 1051-8215
DOI: 10.1109/76.954499
Rights: © 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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