System Maintenance:
There may be intermittent impact on performance while updates are in progress. We apologize for the inconvenience.
By Topic

Improved Methods for Initializing R-Q Model Parameters and Quantization Parameter in H.264 Rate Control

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Xiaodong Liu ; Grad. Sch. at Shenzhen, Broadband Network & Multimedia Res. Center, Tsinghua Univ., Shenzhen, China ; Qionghai Dai ; Chonggang Fu

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.

Published in:

Computer Science and Information Engineering, 2009 WRI World Congress on  (Volume:6 )

Date of Conference:

March 31 2009-April 2 2009