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Title: Color quantization of compressed video sequences
Authors: Cheung, WF
Chan, YH 
Keywords: Color display
Color palette
Color quantization
Compressed domain video processing
Compressed video
Cumulative color histogram
DC sequence
Issue Date: Mar-2003
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on circuits and systems for video technology, Mar. 2003, v. 13, no. 3, p. 270-276 How to cite?
Journal: IEEE transactions on circuits and systems for video technology 
Abstract: This paper presents a novel color quantization algorithm for compressed video data. The proposed algorithm extracts discrete cosine (DC) transform coefficients and motion vectors of blocks in a shot to estimate a cumulative color histogram of the shot and, based on the estimated histogram, design a color palette for displaying the video sequence in the shot. It significantly reduces the complexity of the generation of a palette by effectively reducing the number of training vectors used in training a palette without sacrificing the quality. The palette obtained can provide a good display quality even if zooming and panning exist in a shot. The experimental results show that the proposed method can achieve a significant signal-to-noise ratio improvement as compared with conventional video color-quantization schemes when zooming and panning are encountered in a shot.
ISSN: 1051-8215
EISSN: 1558-2205
DOI: 10.1109/TCSVT.2003.809831
Rights: © 2003 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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