The present invention provides an image processing apparatus in which images that can be comfortably viewed by a viewer with less eyestrain can be displayed on a display device. And, a combustion air channel passing the compressor, the combustor and the turbine and a cooling air channel passing the radiator, the cooling fan and the electric power converter are formed as mutually independent channels from intake to exhaust. An interferometer device is used to collect interference images of a sample object at a sequence of angles around the sample object.