Name
Title | ||
|---|---|---|
Improved Methods for Initializing R-Q Model Parameters and Quantization Parameter in H.264 Rate Control |
Abstract | ||
|---|---|---|
Rate control plays an important role in video coding and transmission. current initialization of quantization parameter (QP) in H.264 rate control takes the same value for images with different complexity as long as the bit number per pixel is the same which is different from the real-world situation. In this paper, we propose a new R-Q model and QP initializing method to improve the precision of rate control. In this method, the quantization parameter and R-Q model parameters are calculated from the first two frames of video sequence. Some formulas are presented to implement the process in this paper. Experimental results show that the output bit rate achieved by our proposed one is more close to the target bit rate while the reconstructed quality is comparable with low computing complexity. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/CSIE.2009.243 | CSIE (6) |
Keywords | Field | DocType |
rate control,qp initializing method,h.264 rate control,bit number,r-q model parameter,initializing r-q model parameters,target bit rate,different complexity,low computing complexity,computational complexity,quantization parameter,low computational complexity,video coding,image sequences,improved methods,output bit rate,video sequence,encoding,mathematical model,quantization,predictive models | Computer science,Coding (social sciences),Real-time computing,Artificial intelligence,Computer vision,Algorithm,Bit rate,Bit numbering,Pixel,Initialization,Quantization (signal processing),Encoding (memory),Computational complexity theory | Conference |
Volume | ISBN | Citations |
6 | 978-0-7695-3507-4 | 1 |
PageRank | References | Authors |
0.38 | 7 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Xiaodong Liu | 1 | 36 | 11.83 |
| Qionghai Dai | 2 | 3904 | 215.66 |
| Chonggang Fu | 3 | 1 | 0.72 |