Name
Title | ||
|---|---|---|
An efficient low-cost FPGA implementation of a configurable motion estimation for H.264 video coding |
Abstract | ||
|---|---|---|
Despite the diversity of video compression standard, the motion estimation still remains a key process which is used in most of them. Moreover, the required coding performances (bit-rate, PSNR, image spatial resolution,etc.) depend obviously of the application, the environment and the network communication. The motion estimation can therefore be adapted to fit with these performances. Meanwhile, the real time encoding is required in many applications. To reach this goal, we propose in this paper a flexible hardware implementation of the motion estimator which enables the integer motion search algorithms to be modified and the fractional search as well as variable block size to be selected and adjusted. Hence, this novel architecture, especially designed for FPGA targets, proposes high-speed processing for a configuration which supports the variable size blocks and quarter-pel refinement, as described in H.264. The proposed low-cost architecture based on Virtex 6 FPGA can process integer motion estimation on 1080 HD video streams, respectively, at 13 fps using full search strategy (108k Macroblocks/s) and up to 223 fps using diamond search (1.8M Macroblocks/s). Moreover subpel refinement in quarter-pel mode is performed at 232k Macroblocks/s. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1007/s11554-012-0274-5 | J. Real-Time Image Processing |
Keywords | Field | DocType |
hd video stream,fractional search,configurable motion estimation,diamond search,motion estimator,integer motion search algorithm,motion estimation,key process,full search strategy,h.264 video coding,efficient low-cost fpga implementation,integer motion estimation,fpga target | Block-matching algorithm,Search algorithm,Quarter-pixel motion,Computer science,Motion compensation,Real-time computing,Virtex,Motion estimation,Data compression,Encoding (memory) | Journal |
Volume | Issue | ISSN |
9 | 1 | 1861-8219 |
Citations | PageRank | References |
6 | 0.71 | 21 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Wajdi Elhamzi | 1 | 15 | 2.89 |
| Julien Dubois | 2 | 146 | 18.76 |
| Johel Miteran | 3 | 80 | 7.94 |
| Mohamed Atri | 4 | 154 | 27.75 |