High-fidelity image compression with multithreshold wavelet coding(MTWC)

Houng-Jyh Mike Wang; C.-C. Jay Kuo

doi:10.1117/12.292764

30 October 1997 High-fidelity image compression with multithreshold wavelet coding (MTWC)

Houng-Jyh Mike Wang, C.-C. Jay Kuo

Proceedings Volume 3164, Applications of Digital Image Processing XX; (1997) https://doi.org/10.1117/12.292764
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

A new embedded wavelet coder called the multi-threshold wavelet coder (MTWC) was proposed in this research. The new coder was motivated by a careful analysis of the rate- distortion performance and the coding efficiency of existing embedded wavelet coders. Unlike other proposed embedded wavelet coders which use a single initial threshold in their successive approximate quantization, MTWC uses different initial thresholds in different subbands and applies a subband decision scheme to decide which subband should be coded in sequence. It is shown with experimental results that MTWC has a better rate-distortion tradeoff at higher bit rates and a lower computational complexity than other embedded wavelet coders. Furthermore, MTWC can be easily applied to an image coder with the wavelet packet transform, whose performance is significantly better than their age coder with the pyramid wavelet transform for texture-dominant imagery.

Citation Download Citation

Houng-Jyh Mike Wang and C.-C. Jay Kuo "High-fidelity image compression with multithreshold wavelet coding (MTWC)", Proc. SPIE 3164, Applications of Digital Image Processing XX, (30 October 1997); https://doi.org/10.1117/12.292764

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