(a) Optical image 
(b) Radar image 
(c) Registration checkerboard result 
Figure 3: Registration: the optical and the radar images represent the same area with a deformation. A six parameters transform is 
computed (translation, rotation, scaling) using the mutual information as a similarity measure. 
(a) Panchro image 
Figure 4: Pan-sharpening example: high resolution of the panchromatic image is introduced in the multispectral image to obtain a 
multispectral high resolution image with a basic method.