Compression of multispectral images by three-dimensional SPIHT algorithm

被引：192

作者：

Dragotti, PL ^{[1
]}

Poggi, C ^{[1
]}

Ragozini, ARP ^{[1
]}

机构：

[1] Univ Naples Federico II, Dipartimento Ingn Elettron & Telecommun, I-80125 Naples, Italy

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2000年 / 38卷 / 01期

关键词：

compression; multispectral images; remote sensing; transform coding;

D O I：

10.1109/36.823937

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We carry out low bit-rate compression of multispectral images by means of the Said and Pearlman's SPIHT algorithm, suitably modified to take into account the interband dependences. Tw techniques are proposed: in the first, a three-dimensional (3-D) transform is taken (wavelet in the spatial domain, Karhunen-Loeve in the spectral domain) and a simple 3-D SPIHT is used; in the second, after taking a spatial wavelet transform, spectral vectors of pixels are vector quantized and a gain-driven SPIHT is used, Numerous experiments on two sample multispectral images show very good performance for both algorithms.

引用

页码：416 / 428

页数：13

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