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Technical Program
Paper Detail
| Paper: | WP-P4.9 |
| Session: | Video Coding - II |
| Time: | Wednesday, October 11, 14:20 - 17:00 |
| Presentation: |
Poster
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| Title: |
REVERSE, SUB-PIXEL BLOCK MATCHING: APPLICATIONS WITHIN H.264 AND ANALYSIS OF LIMITATIONS |
| Authors: |
Koohyar Minoo; University of California, San Diego | | | | | Truong Nguyen; University of California, San Diego | | |
| Abstract: |
In this paper the concept of reverse block matching is introduced based on the relativity of motion, especially, the translational motion. As one of the main applications for this technique, sub-pixel motion estimation is revisited to achieve faster, yet efficient video coding when it is to be deployed on a system with limited memory and data caching requirements. Analysis of direct (conventional) and reverse (proposed) sub-pixel motion estimation at the encoder is provided to identify the sources of mismatch between these two techniques. Finally, experimental results are provided for sub-pixel motion estimation, using the reverse block matching scheme within the H.264 encoder. These results show a significant increase in speed and a reduction of required memory at a reasonable cost, in terms of PSNR degradation, when compared to the fastest direct sub-pixel motion estimation methods currently implemented in the reference H.264 codec. |
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