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WAVELET-BASED HYPERSPECTRAL IMAGE CODING USING ROBUST FIXED RATE TRELLIS-CODED QUANTIZATION

IP.com Disclosure Number: IPCOM000009715D
Original Publication Date: 2000-Jan-01
Included in the Prior Art Database: 2002-Sep-12

Publishing Venue

Motorola

Related People

Authors:
Glen P. Abousleman

Abstract

A system is presented for compression of hyper- spectral imagery. Specifically, DPCM is used for spectral decorrelation, while a robust 2-D discrete wavelet coding scheme is used for spatial decorrela- tion. Trellis-coded quantization is used to encode the wavelet coefficients. Fixed-rate codebooks are designed using a modified version of the general- ized Lloyd algorithm. The system achieves a com- pression ratio of greater than 70: 1, with an average PSNR of the coded hyperspectral sequence exceed- ing40dR.