A device for producing a shape model used for a matching process of an object to be worked in a robot system. The shape-model producing device includes a shape-data obtaining section for obtaining three-dimensional shape data of the object; a viewpoint setting section for setting, in a coordinate system to which the three-dimensional shape data obtained by the shape-data obtaining section belongs, a plurality of virtual viewpoints permitting the object placed in the coordinate system to be observed in directions different from each other; and a shape-model generating section for generating, as a plurality of shape models, a plurality of two-dimensional image data of the object, based on the three-dimensional shape data, the plurality of two-dimensional image data being estimated when the object is observed in the coordinate system from the plurality of virtual viewpoints set by the viewpoint setting section.