6.5 Image Enhancement in Multispectral Space - Multispectral Transformation
The multispectral or vector nature of most remote sensing data makes it possible for spectral transformations to generate new sets of image components or bands. The transformed image may make evident features not discernable in the original data or alternatively, it might possibly preserve the essential information content of the image with a reduced number of the transformed dimensions. The last point has significance for the display of a data in three dimensions on a colour monitor or in colour hardcopy, and for transmission and storage of data.
6.5.1 Image arithmetic, band ratios and
vegetation indices
