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Interactive Spectral Band Discovery for Exploratory Visual Analysis of Satellite Images

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3 Author(s)
Bratasanu, D. ; Romanian Space Agency, Bucharest, Romania ; Nedelcu, I. ; Datcu, M.

This paper advocates an automatic technique to discover the optimum combination of three spectral features of a multispectral satellite image that enhance visualization of learned targets/objects. The method is an application-free, single-click user effort, spectrally and spatially balanced, fast-response, low-cost, information-based feature selector that comes to optimize maybe the most important problem in the computer-assisted work of the human operator: visualization of target areas. The new tools developed to assist image experts in their work need to be tailored to the new products offered by the sub-meter spatial resolution multispectral imaging sensors. The spectral bands of the satellite image are ranked using measures of mutual information-the minimum-redundancy-maximum-relevance mRMR criterion- and the top three are automatically displayed on screen. The evaluation of results is performed in terms of both quality (expert-driven visual analysis) and quantity (color metrics) and shows that this approach can become a powerful tool in support of image analysis operations.

Published in:

Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of  (Volume:5 ,  Issue: 1 )

Date of Publication:

Feb. 2012

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