Title :
Rate Control Based on Sequence-sensed Optimization
Author :
Tian-Ye, Tang ; Hong-yang, Yu ; Zhao, Liu
Author_Institution :
Electron. Eng. Sch., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
In traditional rate control schemes, the rate distortion (R_D) optimizing method is adopted to minimize the distortion and subject to the constraint of rate, which however only utilizes the spatial domain information of one frame of video sequence. A new rate control method based on temporal-spatial domain information is proposed in this paper. The method distinguishes the macroblocks (MBs) as different importance levels according to their referred times in the temporal domain and combines the spatial characteristics of MB to implement rate control. Allowing for the temporal correlation, the proposal can be optimal in sequence sense rather than frame sense. Simulation results show that the method is reasonable and effective in video coding. It is applicable in video coding and transmitting applications
Keywords :
image sequences; spatiotemporal phenomena; video coding; rate control method; sequence-sensed optimization; temporal-spatial domain information; video coding; Bandwidth; Bit rate; Communication system control; Constraint optimization; Entropy; Quadratic programming; Quantization; Rate-distortion; Video coding; Video sequences;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284592
