Disclosed herein is a far-infrared radiation image processing apparatus configured to process an image taken by detecting far-infrared rays radiated from an object, the far-infrared radiation image processing apparatus including: an image signal reception section configured to receive an image signal indicative of a far-infrared radiation image taken by a far-infrared radiation camera; an area designation reception section configure to receive area designation information input to designate a specific area of the far-infrared radiation image; and a resolution conversion section configured to convert the resolution for the amount of the far-infrared rays applicable to the specific area designated by the area designation information in the far-infrared radiation image, thereby creating resolution-converted image information.