Title :
An efficient wavelet-VQ method for image coding
Author :
Begum, Momotuz ; Nahar, Nurun ; Fatimah, K. ; Hasan, Md Kamml
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
Abstract :
In this paper, we propose an effective method for image coding using vector quantization (VQ) and wavelet transforms. An efficient clustering algorithm is derived for codebook design using mean-squared error (MSE) and variance based selection strategy. The new technique is implemented in the wavelet-domain. Different subband coefficients are vector quantized using full search VQ and adaptive dynamic finite state VQ (ADFSVQ). Computer simulation results are presented to evaluate and compare the performance of the proposed scheme with other reported results.
Keywords :
block codes; image coding; mean square error methods; pattern clustering; vector quantisation; wavelet transforms; adaptive dynamic finite state VQ; block encoding; clustering algorithm; codebook design; computer simulation results; efficient wavelet-VQ method; full search VQ; image coding; mean-squared error; subband coefficients; variance based selection strategy; vector quantization; wavelet transform; wavelet-domain implementation; Algorithm design and analysis; Clustering algorithms; Computer errors; Computer simulation; Digital images; Genetic algorithms; Image coding; Speech; Vector quantization; Wavelet transforms;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1206001
