Title :
Very fast bit allocation algorithm, based on simplified R-D curve modeling
Author :
Aminlou, Alireza ; Fatemi, Omid
Author_Institution :
Dept. of Electr. & Comput. Eng., Tehran Univ., Iran
Abstract :
In multimedia, specially web-based applications and mobile communication where images are used extremely, rate control method has significant role in image coder performance and computational complexity. We propose a very fast rate control algorithm suitable for JPEG2000 coder with less computational complexity which uses uniform exponential curve modeling. The simulation results show comparable performance with full search algorithm. However, using proposed refinement algorithm results in obtaining the optimum point.
Keywords :
computational complexity; image coding; rate distortion theory; transform coding; wavelet transforms; JPEG2000 coder; Lagrange multiplier; computational complexity; fast bit allocation algorithm; full search algorithm; image coder performance; multimedia data; rate control method; simplified R-D curve modeling; uniform exponential curve modeling; wavelet-based coding; Bit rate; Code standards; Communication system control; Computational complexity; Discrete wavelet transforms; Image coding; Image storage; Partitioning algorithms; Quantization; Tiles;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301989
