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Showing posts from August, 2009

COMPARISON BETWEEN YUN ZHANG PANSHARP ALGORITHM, EHLERS FUSION ALGORITHM AND GRAM-SCHMIDT SPECTRAL SHARPENING

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Hello visitor, its been a while since my last post. Starting from now, I will try to post my blog in English language. This is hard for me because I neither English nor Americans. I am Indonesian. I hope you can understand if my grammar or structure maybe very confusing. Please pardon me. I still have to learn. Ok back to the topic, few days ago, I had downloaded the trial/demo version of Leica Photogrammetry Suite version 9.2 from their FTP ( ftp.gi-leicageosystems.com ). After exploring some new modules, I get excite with a new image fusion/pan sharpening algorithm that as far I know, not implemented in previous IMAGINE or LPS version. The algorithm was developed by Mr Manfred Ehlers from Onasbruck University Germany, and it is called Ehlers fusion. I have tried to use it to fuse quickbird 16 BIT sample data from digitalglobe (multispectral and panchromatic), and the result is awesome. Comparison between original dataset and sharpening result indicated that this algorithm can maintai