Hello, i have to processe some images COSMO SkyMed with a function made in IDL. The function is ok, but I have a problem with the image. The problem is that this image are acquired by COSMO SkyMed in mode Ping-Pong, so that have different sizes and there is a little difference(0,3 mile) about the scenario displayed. I need to coregistrate this two images...I should take the common area of the two images e pass this to the IDL function... Anyone can help me?