Hi Matimont, I have already done it. I've also tried /ImageRegistration20.cxx/ example, but it was running so slow, that I couldn't wait for it to finish. Konstantin -- View this message in context: http://vtk.1045678.n5.nabble.com/3D-Volume-Registration-tp5731990p5732023.html Sent from the VTK - Users mailing list archive at Nabble.com.