The
Fusion operation allow combination
of images with different spectral
and spatial resolution keeping the radiometric information. Huge
effort has been put in developing fusion methods that preserve the
spectral information and
increase detail information in the hybrid product produced by fusion
process. The available methods in TerraLib are:
- IHS: IHS method
consists on transforming the R,G and B bands of the multispectral image
into
IHS components, replacing the intensity component by the panchromatic
image, and
performing the inverse transformation to obtain a high spatial
resolution multispectral
image.