Title :
A method of rate control of wavelet picture coding using dynamic programming
Author_Institution :
NHK Sci. & Tech. Res. Labs., Japan
Abstract :
The JPEG2000 method [ISO/IEC FCD15444-1, July 2002] [D. S. Taubman, July 2000], applied to compress still images or moving pictures frame-by-frame, performs bitplane arithmetic entropy coding on each coefficient block of the wavelet transform of the source images. The rate control problem is considered as a combinatorial optimization problem (the resource allocation problem) to decide the truncation bitplane level of each code block, which minimizes the summation of the quantization error over the whole image according to the total bitrate available for the compressed image. In this paper, a new method is proposed to decide the truncation bitplanes using a dynamic programming scheme. The algorithm and an experimental result are also reported.
Keywords :
arithmetic codes; data compression; dynamic programming; entropy codes; image coding; resource allocation; transform coding; wavelet transforms; JPEG2000 method; bitplane arithmetic entropy coding; combinatorial optimization problem; dynamic programming; moving pictures compression; rate control; rate control problem; resource allocation problem; still images compression; wavelet picture coding; wavelet transform; Arithmetic; Dynamic programming; Entropy coding; IEC standards; ISO; Image coding; Quantization; Resource management; Transform coding; Wavelet transforms;
Conference_Titel :
Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7750-8
DOI :
10.1109/ICIP.2003.1247358