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http://dx.doi.org/10.7780/kjrs.2011.27.3.353

WorldView-2 pan-sharpening by minimization of spectral distortion with least squares  

Choi, Myung-Jin (Satellite Information Research Institute, Korea Aerospace Research Institute)
Publication Information
Korean Journal of Remote Sensing / v.27, no.3, 2011 , pp. 353-357 More about this Journal
Abstract
Although the intensity-hue-saturation (IHS) method for pan-sharpening has a spectral distortion problem, it is a popular method in the remote sensing community and has been used as a standard procedure in many commercial packages due to its fast computing and easy implementation. Recently, IHS-like approaches have tried to overcome the spectral distortion problem inherited from the IHS method itself and yielded a good result. In this paper, a similar IHS-like method with least squares for WorldView-2 pan-sharpening is presented. In particular, unlike the previous methods with three or four-band multispectral images for pan-sharpening, six bands of WorldView-2 multispectral image located within the range of panchromatic spectral radiance responses are considered in order to reduce the spectral distortion during the merging process. As a result, the new approach provides a satisfactory result, both visually and quantitatively. Furthermore, this shows great value in spectral fidelity of WorldView-2 eight-band multispectral imagery.
Keywords
Pan-sharpening; intensity-hue-saturation transform; least squares; WorldView-2 eight band imagery;
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Times Cited By KSCI : 1  (Citation Analysis)
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