A computer includes a photographing unit for photographing every time a turn table is rotated and acquiring images of the photographing target from a plurality of photographing devices; a coordinate-system setting unit for setting a coordinate system; position of an extracted feature point of the photographing target being defined as reference of the coordinate system; a viewpoint-parameter calculation unit for calculating viewpoint parameters on the basis of the coordinate system set by the coordinate-system setting unit and camera parameters such as focal lengths of the photographing devices, the viewpoint parameters including position data of the photographing devices and direction data of the photographing devices are oriented; and a correspondence-data storage unit for storing the images and the viewpoint parameters being made correlated with each other, the images being acquired by the photographing unit, the viewpoint parameters being calculated by the viewpoint-parameter calculation unit.