1. An image processing apparatus comprising: an association section configured to associate panorama image data with panorama processing information showing that the panorama image data is a full circumference panorama image, the full circumference panorama image being generated by displacing an imaging device during an imaging operation in an imaging direction and including a plurality of frame image data, at least one of the plurality of frame image data including a seam portion that is not used in forming the full circumference panorama image; a display image generation section configured to: (i) determine whether or not the panorama image data is the full circumference panorama image by use of the panorama processing information, and (ii) perform a display projection process on an output from the association section to obtain display image data when a determination result indicates that the panorama image data is the full circumference panorama image and perform another display process which is different from the display projection process on the output from the association section to obtain the display image data when the determination result indicates that the panorama image data is not the full circumference panorama image; and a display device to display an image obtained from the display image data output from the display image generation section.