Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/1476
Title: | Color quantization of compressed video sequences | Authors: | Cheung, WF Chan, YH |
Issue Date: | Mar-2003 | Source: | IEEE transactions on circuits and systems for video technology, Mar. 2003, v. 13, no. 3, p. 270-276 | 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. | Keywords: | Color display Color palette Color quantization Compressed domain video processing Compressed video Cumulative color histogram DC sequence MPEG |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE transactions on circuits and systems for video technology | 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. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
Appears in Collections: | Journal/Magazine Article |
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Color Quantization of Compressed video sequences_03.pdf | 1.14 MB | Adobe PDF | View/Open |
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