An image processing apparatus comprising: first image obtaining means for obtaining a first image of an object in a first shape state； imaging region setting means for setting an imaging region of the object in a second shape state； deformation information obtaining means for obtaining deformation information indicating deformation of the object from the second shape state to the first shape state； corresponding region calculating means for calculating a corresponding region that corresponds to the imaging region in the first shape state based on the deformation information； and display image generating means for generating a display image based on the first image and the corresponding region.
