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Fast motion estimation based on the redundant wavelet for 2D+T wavelet coder
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Park, Heechan, Martin, Graham R. and Yu, Andy C. (2005) Fast motion estimation based on the redundant wavelet for 2D+T wavelet coder. In: Proceedings of the 9th International Workshop of Visual Content Processing and Representation (VLBV 2005), Sardinia, Italy, 15-16 Sep 2005
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Abstract
Scalable video coding utilizing the wavelet transform applied to both the spatial and temporal domains (3D-DWT) is of current interest in video coding. In the case of the 2D+t scheme, motion estimation is required to be conducted in the wavelet domain. We explore approaches that overcome the well-known shift-variant property of the wavelet transform so that motion is estimated accurately. Specifically, an algorithm using the redundant wavelet and phase-multi-hypothesis shows PSNR superiority but computational complexity is high. We propose a fast motion search method that significantly reduces computational complexity to as low as 2% of the existing algorithm yet still shows better performance than full-spatial motion estimation.
| Item Type: | Conference Item (Paper) | ||||
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| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Computer Science | ||||
| Library of Congress Subject Headings (LCSH): | Wavelets (Mathematics), Video compression, Digital video, Coding theory, Image processing -- Digital techniques, Signal processing -- Digital techniques | ||||
| Official Date: | 2005 | ||||
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| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | Proceedings of the 9th International Workshop of Visual Content Processing and Representation (VLBV 2005) | ||||
| Type of Event: | Workshop | ||||
| Location of Event: | Sardinia, Italy | ||||
| Date(s) of Event: | 15-16 Sep 2005 |
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