By Topic

Distortion policy of buffer-constrained rate control for real-time VBR coders

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

1 Author(s)
Choi, J. ; Inst. of Telecommun. Res., Univ. of South Australia, The Levels, SA, Australia

With a rate policy, we can achieve buffer-constrained rate control for variable bit rate coder. Since the rate policy emphasizes the stability of the state of the buffer, we can loose the advantage of variable bit rate coders, i.e., a (nearly) constant quality/distortion. To overcome the difficulty, the distortion policy is considered in this paper. Based on both the state of the buffer and the distortion, we can formulate the distortion policy. By choosing a proper weighting factor of the cost function in the distortion policy, the state of the buffer can be stable and/or the variation of the distortion sequence can be kept small. In addition, the properties of the distortion policy are obtained. We also consider switching and adaptive methods for the weighting factor to adjust time-varying characteristics of blocks of images. Using a JPEG-like image coder, the distortion policy is applied to buffer-constrained rate control

Published in:

Image Processing, IEEE Transactions on  (Volume:8 ,  Issue: 4 )