Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/269
Title: A very low bit-rate video coding algorithm by focusing on moving regions
Authors: Wong, Kwok-wai
Lam, Kin-man Kenneth
Siu, Wan-chi
Subjects: Video coding algorithm
DCT coefficients
Motion estimation
Macroblock
Issue Date: 2000
Publisher: IEEE
Source: 2000 IEEE International Conference on Multimedia and Expo : ICME2000 : proceedings : 30 July-2 August 2000, New York, NY, USA, p. 983-986
Abstract: Block-based motion estimation and compensation are the most popular techniques for video coding. 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 by focussing on moving regions is proposed. The objective 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. We predefined eight patterns to represent 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.
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Type: Conference Paper
URI: http://hdl.handle.net/10397/269
ISBN: 0-7803-6536-4
Appears in Collections:EIE Conference Papers & Presentations

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