H.264 Based Complexity Scalable Control Algorithm under Energy Constraints  

作　　者：GAO Xuejuan GAO Xuejuan ZHUO Li ZHUO Li SHEN Lansun[1] SHEN Lansun[1] 

机构地区：[1]Signal and Information Processing Laboratory, Beijing University of Technology, Beijing 100124, China [1]Signal and Information Processing Laboratory, Beijing University of Technology, Beijing 100124, China

出　　处：《Chinese Journal of Electronics》2009年第4期639-644,共6页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.60772069）, the National High Technology Research and Development Program of China （No.2008AA01A313）.

摘　　要：In order to control the complexity of H.264 encoder, we first proposed two efficient Complexity allo- cation and control （CAC） algorithms for both intra and inter coding respectively, based on a new Rate-distortion- complexity optimization （RDCO） framework and the rear- rangement of candidate modes according to the local-edges and texture analysis. The CAC algorithms can be per- formed both at the frame level and the Macroblock （MB） level; then, within the proposed CAC algorithms, a whole complexity scalable control algorithm was given. Experi- mental results show that our proposed algorithm can make an appropriate cut-off point for the candidate modes se- quence adaptively according to current energy condition of a mobile device, so as to adjust the complexity at any target levels with minimum degradation in video quality. This can prolong the operational lifetime of the battery for hand-held devices.

关 键 词：Complexity control Rate-distortion- complexity optimization （RDCO） Intra coding Inter cod- ing H.264. 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN919.81[自动化与计算机技术—控制科学与工程]