TWO ASPECTS IN LOSSY COMPRESSION OF HYPESPECTRAL AVIRIS IMAGES

被引：0
|
作者：
Lukin, Vladimir [1 ]
Ponomarenko, Nikolay [1 ]
Zriakhov, Mikhail [1 ]
Kaarna, Arto [2 ]
机构：
[1] Natl Aerosp Univ, Dept Transmitters Receivers & Signal Proc, 17 Chkalova St, UA-61070 Kharkov, Ukraine
[2] Lappeenranta Univ Technol, Dept Informat Technol, FIN-53851 Lappeenranta, Finland
来源：
2008 INTERNATIONAL CONFERENCE ON MATHEMATICAL METHODS IN ELECTROMAGNETIC THEORY | 2008年
关键词：
D O I：
10.1109/MMET.2008.4580999
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Hyperspectral images formed by AVIRIS imager are often compressed for data transmission and storage. For this purpose, both lossless and lossy compression methods can be used, but the latter are able to provide considerably larger compression ratios. Lossy compression can be done effectively in automatic manner with grouping of sub-bands and setting the quantization step depending upon estimates of noise variance for sub-band images. In this paper we show how to select this quantization step for each group of sub-bands with providing a proper trade-off between losses (distortions) introduced and attainable compression ratio for simple and more realistic models of noise.
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收藏
页码：375 / +
页数：2
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