Directional wavelet transforms for prediction residuals in video coding
Author(s)Kamisli, Fatih; Lim, Jae S.
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Various directional transforms have been developed recently to improve image compression. In video compression, however, prediction residuals of image intensities, such as the motion compensation residual or the resolution enhancement residual, are transformed. The applicability of the directional transforms on prediction residuals have not been carefully investigated. In this paper, we briefly discuss differing characteristics of prediction residuals and images, and propose directional transforms specifically designed for prediction residuals. We compare these transforms with the directional transforms proposed for images using prediction residuals. The results of the comparison indicate that our proposed directional transforms can provide better compression of prediction residuals than the directional transforms proposed for images.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Research Laboratory of Electronics
2009 16th IEEE International Conference on Image Processing (ICIP)
Institute of Electrical and Electronics Engineers
Kamisli, F., and J.S. Lim. “Directional wavelet transforms for prediction residuals in video coding.” Image Processing (ICIP), 2009 16th IEEE International Conference on. 2009. 613-616. © 2009 IEEE
Final published version
INSPEC Accession Number: 11141747
Video coding, Wavelet transforms