This Article 
   
 Share 
   
 Bibliographic References 
   
 Add to: 
 
Digg
Furl
Spurl
Blink
Simpy
Google
Del.icio.us
Y!MyWeb
 
 Search 
   
2009 WRI World Congress on Computer Science and Information Engineering
Improved Methods for Initializing R-Q Model Parameters and Quantization Parameter in H.264 Rate Control
Los Angeles, California USA
March 31-April 02
ISBN: 978-0-7695-3507-4
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.
Citation:
Xiaodong Liu, Qionghai Dai, Chonggang Fu, "Improved Methods for Initializing R-Q Model Parameters and Quantization Parameter in H.264 Rate Control," csie, vol. 6, pp.320-323, 2009 WRI World Congress on Computer Science and Information Engineering, 2009
Usage of this product signifies your acceptance of the Terms of Use.