Transforms for the Motion Compensation Residual
Name
Kamisli-2009-Transforms for the Motion Compensation Residual.pdf
Size
280.96 KB
Format
Adobe PDF
Checksum (MD5)
8bf4e378558a75fc4b4ea61545e2a39a
Author(s)
Kamisli, Fatih
Lim, Jae S.
Date Issued
May 2009
Journal
Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, 2009
Publisher
Institute of Electrical and Electronics Engineers
Citation
Kamisli, F., and J.S. Lim. “Transforms for the motion compensation residual.” Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on. 2009. 789-792. © 2009 IEEE
Version
Final published version
Abstract
The Discrete-Cosine-Transform (DCT) is the most widely used transform in image and video compression. Its use in image compression is often justified by the notion that it is the statistically optimal transform for first-order Markov signals, which have been used to model images. In standard video codecs, the motion-compensation residual (MC-residual) is also compressed with the DCT. The MC-residual may, however, possess different characteristics from an image. Hence, the question that arises is if other transforms can be developed that can perform better on the MC-residual than the DCT. Inspired by recent research on direction-adaptive image transforms, we provide an adaptive auto-covariance characterization for the MC-residual that shows some statistical differences between the MC-residual and the image. Based on this characterization, we propose a set of block transforms. Experimental results indicate that these transforms can improve the compression efficiency of the MC-residual.
Subjects
Discrete cosine transforms
Motion compensation
Video coding
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/ICASSP.2009.4959702
