Title :
Joint optimal bit allocation and best-basis selection for wavelet packet trees
Author :
Goldschneider, Jill R. ; Riskin, Eve A.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Abstract :
In this paper, an algorithm for wavelet packet trees that can systematically identify all bit allocations/best-basis selections on the lower convex hull of the rate-distortion curve is presented. The algorithm is applied to tree-structured vector quantizers used to code image subbands that result from the wavelet packet decomposition. This method is compared to optimal bit allocation for the discrete wavelet transform
Keywords :
image coding; rate distortion theory; transform coding; tree data structures; vector quantisation; wavelet transforms; best-basis selection; image coding; image subbands; lower convex hull; optimal bit allocation; rate-distortion curve; tree-structured vector quantizers; wavelet packet decomposition; wavelet packet trees; Bit rate; Data analysis; Decision support systems; Discrete wavelet transforms; Rate-distortion; Signal analysis; Time frequency analysis; Wavelet analysis; Wavelet packets; Wavelet transforms;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.678078
