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Three-Dimensional Wavelet Coding of Video with Global Motion Compensation (1999)
| Citations: | 35 - 8 self |
BibTeX
@MISC{Wang99three-dimensionalwavelet,
author = {Albert Wang and Zixiang Xiong and Philip A. Chou and Sanjeev Mehrotra},
title = {Three-Dimensional Wavelet Coding of Video with Global Motion Compensation},
year = {1999}
}
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Abstract
Three-dimensional (2D+T) wavelet coding of video using SPIHT has been shown to outperform standard predictive video coders on complex high-motion sequences, and is competitive with standard predictive video coders on simple low-motion sequences. However, on a number of typical moderate-motion sequences characterized by largely rigid motions, 3D SPIHT performs several dB worse than motion-compensated predictive coders, because it is does not take advantage of the real physical motion underlying the scene. In this paper, we introduce global motion compensation for 3D subband video coders, and find .5--2 dB gain on sequences with dominant background motion. Our approach is a hybrid of video coding based on sprites, or mosaics, and subband coding. 1 Introduction Motion compensated predictive video coders have been highly successful since their introduction in the '70s. Today they are quickly being deployed commercially in the form of the standards H.261/3 and MPEG-1/2/4. However...
Keyphrases
global motion compensation three-dimensional wavelet coding standard predictive video coder typical moderate-motion sequence spiht performs several db introduction motion db gain rigid motion subband video coder predictive video coder simple low-motion sequence complex high-motion sequence motion-compensated predictive coder subband coding real physical motion dominant background motion
