Title :
Multiple Priority Region of Interest Coding with H.264
Author :
Agrafiotis, Dimitris ; Bull, David R. ; Nishan Canagarajah ; Kamnoonwatana, Nawat
Author_Institution :
Centre for Commun. Res., Univ. of Bristol, UK
Abstract :
This paper describes a modified rate control algorithm for H.264 that can accommodate multiple priority levels given a region of interest (Rol). The modified method allows better control of the quality of the RoI and gradual variation of the quality in the rest of the video frame through a bit redistribution process that is based on a number of parameters, including characteristics of the Rol, user input and perceptual factors.
Keywords :
video codecs; video coding; H.264 standard; ROI; bit redistribution process; quality control; rate control algorithm; region of interest coding; Code standards; Communication system control; Delay; Predictive models; Quadratic programming; Quantization; Rate-distortion; Size control; Video codecs; Video coding; Video coding;
Conference_Titel :
Image Processing, 2006 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
1-4244-0480-0
DOI :
10.1109/ICIP.2006.313201
