Wavelet-based hyperspectral image coding using robust fixed-rate trellis-coded quantization

被引：12
|
作者：
Abousleman, GP [1 ]
机构：
[1] Motorola Inc, Space & Syst Technol Grp, Scottsdale, AZ 85252 USA
来源：
ALGORITHMS FOR MULTISPECTRAL AND HYPERSPECTRAL IMAGERY IV | 1998年 / 3372卷
关键词：
data compression; hyperspectral image compression; multispectral image coding;
D O I：
10.1117/12.312610
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
A system is presented for compression of hyperspectral imagery. Specifically, DPCM is used for spectral decorrelation, while a robust 2-D discrete wavelet coding scheme is used for spatial decorrelation. Trellis-coded quantization is used to encode the wavelet coefficients. Side information and rate allocation strategies are discussed. Fixed-rate codebooks are designed using a modified version of the generalized Lloyd algorithm. This system achieves a compression ratio of greater than 70:1, with an average PSNR of the coded hyperspectral sequence exceeding 40 dB.
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页码：74 / 85
页数：12
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