Name
Abstract | ||
|---|---|---|
H.264 video coding standard achieves significant improvement on coding efficiency due to its variable-block-size motion estimation (ME). However, it also leads to much higher computational complexity. This paper presents a novel fast predictive mode decision algorithm to accelerate the ME process for H.264 encoder. Firstly, an early-termination mechanism is introduced to determine the stationary and motion-followed macroblocks (several surrounding blocks have identical motion vectors (MVs)) with adaptive threshold. Secondly, in order to predict the MVs of up-layer blocks, we apply a fast predictive MV search on the 4×4 blocks in non-determined macroblocks which are not early-determined in step 1. Finally, with these predictive MVs, a bottom-up merging method is performed to finish mode decision procedure. Experimental results show that our proposed algorithm can reduce the encoding computational complexity to about 70% of JM8.5 encoder, with negligible average PSNR drop and small bitrate increase. © 2005 IEEE. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1109/ISSPA.2005.1580241 | ISSPA |
Keywords | Field | DocType |
prediction algorithms,psnr,computational complexity,merging,motion estimation,encoding | Computer vision,Pattern recognition,Computer science,Algorithm,Bit rate,Prediction algorithms,Artificial intelligence,Motion estimation,Merge (version control),Discrete cosine transforms,Encoding (memory),Computational complexity theory | Conference |
Volume | Issue | ISBN |
1 | null | 0-7803-9243-4 |
Citations | PageRank | References |
4 | 0.89 | 4 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chun Chen | 1 | 4727 | 246.28 |
| Linjian Mo | 2 | 7 | 3.33 |
| Jiajun Bu | 3 | 4106 | 211.52 |
| Shuiyong Lou | 4 | 10 | 1.82 |
| Zhi Yang | 5 | 22 | 5.56 |