Title :
Rate control using significant coefficient percentage
Author :
Cai, Canhui ; Ding, Runtao
Author_Institution :
Dept. of Telecommun. Eng., Huaqiao Univ., Quanzhou, China
Abstract :
This paper presents a novel bit rate estimation algorithm based on the significant coefficient percentage (SCP) in a wavelet image. A linear rate control model is developed by means of the R-D characteristics of wavelet transformed images. A fast and accurate bit rate control algorithm is implemented for the X-tree wavelet image coder under this framework. Experimental results manifest the effectiveness of the new bit rate control model.
Keywords :
image coding; rate distortion theory; transform coding; tree data structures; variable rate codes; wavelet transforms; R-D characteristics; X-tree wavelet image coder; bit rate control; bit rate estimation algorithm; linear rate control model; significant coefficient percentage; wavelet image; wavelet transformed images; Bit rate; CD-ROMs; Computational complexity; Decoding; Entropy; Image communication; Laplace equations; Rate-distortion; Streaming media; Telecommunication control;
Conference_Titel :
Signal Processing, 2002 6th International Conference on
Print_ISBN :
0-7803-7488-6
DOI :
10.1109/ICOSP.2002.1181195
