Does pan sharpening introduce distortion of spectral information of LANDSAT imageries?

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Sibsankar Mal

Yes. Pan sharpening causes loss of spectral information of the imageries. Although you may get a result, but that's not reliable.

Sandip Tripathy

If your study area is well known, visually distinguishible, it does not matter at all, because you would select the training area as per your perception. But the problem is to use image curve of any pixel for recognition of any parameter.