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Hyperspectral image compression : adapting SPIHT and EZW to Anisotropic 3-D Wavelet Coding

Christophe, Emmanuel and Mailhes, Corinne and Duhamel, Pierre Hyperspectral image compression : adapting SPIHT and EZW to Anisotropic 3-D Wavelet Coding. (2008) IEEE Transactions on Image Processing, vol. 1 (n° 12). pp. 2334-2346. ISSN 1057-7149

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Official URL: http://dx.doi.org/10.1109/TIP.2008.2005824

Abstract

Hyperspectral images present some specific characteristics that should be used by an efficient compression system. In compression, wavelets have shown a good adaptability to a wide range of data, while being of reasonable complexity. Some wavelet-based compression algorithms have been successfully used for some hyperspectral space missions. This paper focuses on the optimization of a full wavelet compression system for hyperspectral images. Each step of the compression algorithm is studied and optimized. First, an algorithm to find the optimal 3-D wavelet decomposition in a rate-distortion sense is defined. Then, it is shown that a specific fixed decomposition has almost the same performance, while being more useful in terms of complexity issues. It is shown that this decomposition significantly improves the classical isotropic decomposition. One of the most useful properties of this fixed decomposition is that it allows the use of zero tree algorithms. Various tree structures, creating a relationship between coefficients, are compared. Two efficient compression methods based on zerotree coding (EZW and SPIHT) are adapted on this near-optimal decomposition with the best tree structure found. Performances are compared with the adaptation of JPEG 2000 for hyperspectral images on six different areas presenting different statistical properties.

Item Type:Article
Additional Information:This publication is available at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=83
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Ecole Supérieure d'Electricité - SUPELEC (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université Paris-Sud 11 (FRANCE)
Laboratory name:
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Deposited By: Corinne MAILHES
Deposited On:17 Sep 2009 07:17

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