Title :
Improved H.264 GOP-level bit allocation by incremental PID algorithm
Author :
Liquan Shen ; Zhaoyang Zhang ; Ying Li ; Zhi Liu
Author_Institution :
Key Lab. of Adv. Display & Syst. Applic., Shanghai Univ., Shanghai
Abstract :
Since the current rate control schemes in H.264 do not present the capability of efficient GOP-level bit allocation, the video quality varies greatly for sequences with the scene change or the scene complexity varying from one GOP to another. To overcome the limitation, we propose a novel rate control scheme based on incremental PID algorithm. The incremental PID algorithm is introduced to minimize video quality variations in GOP-level bit allocation. Extensive simulation results show that the proposed rate control scheme, without expensive computational complexity added, decreases the average video quality variations by 15.07%.
Keywords :
three-term control; video coding; GOP-level bit allocation; H.264 video cosing; incremental PID algorithm; rate control; scene complexity; GOP-level bit allocation; H.264; Incremental PID; Rate control; Wireless communication;
Conference_Titel :
Wireless, Mobile and Sensor Networks, 2007. (CCWMSN07). IET Conference on
Print_ISBN :
978-0-86341-836-5