IMAGE GENERATION DEVICE, AUTOMATIC ARRANGEMENT METHOD, RECORDING MEDIUM, AND PROGRAM

A parts model storage unit (203) stores a plurality of parts models. A combination data storage unit (204) stores combination data prescribing a combination part composed by combining the parts models. A contour generation unit (201) generates a contour of each cell for arrangement of parts. The parts arrangement evaluation unit (205) evaluates whether the prescribed combination part can be arranged on each cell, and stores the combination data or the like that are evaluated as being arrangeable, to an arrangement candidate storage unit (206). A parts selection unit (207) selects one combination part from combination data or the like stored in the arrangement candidate storage unit (206). Then, the image rendering unit (208) renders a three-dimensional image in which the selected combination part is arranged on a cell: