Title :
An improved algorithm for rate distortion optimization in JPEG2000 and its integrated circuit implementation
Author :
Wang, ZhiHua ; Xie, Xiang ; Zhang, Li ; Zhang, Chun
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Rate distortion optimization (RDO) plays an important role in a JPEG2000 encoder. An improved RDO algorithm is presented in this paper. The proposed algorithm is suitable for integrated circuit implementation and can reduce the computational cost. A hardware architecture which includes control unit, memory, divider, and data converter is also given to implement the algorithm. The circuit, based on the improved algorithm, has been integrated in a JPG2000 chip codec core.
Keywords :
codecs; image coding; optimisation; rate distortion theory; JPG2000 chip codec core; RDO IC implementation; computational cost reduction; control unit; data converter; divider; memory; rate distortion optimization; Clocks; Computational efficiency; Costs; Equations; Information theory; Rate-distortion;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
Print_ISBN :
0-7803-8484-9
DOI :
10.1109/ICASSP.2004.1327047
