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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wan-Fung Cheung Yuk-Hee Chan |
| Copyright Year | 1991 |
| 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. |
| Sponsorship | IEEE Circuits and Systems Society |
| Starting Page | 270 |
| Ending Page | 276 |
| Page Count | 7 |
| File Size | 1303335 |
| File Format | |
| ISSN | 10518215 |
| Volume Number | 13 |
| Issue Number | 3 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-03-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Quantization Video sequences Motion estimation Color Histograms Video compression Data mining Discrete transforms Algorithm design and analysis Displays |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Media Technology |
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