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 defining combination parts formed by combination of parts models. A contour generation unit (201) generates a contour of each cell for arranging parts. A parts arrangement evaluation unit (205) evaluates whether defined combination parts may be arranged in each cell and stores combination data and others which have been evaluated to be arranged in an arrangement candidate storage unit (206). A parts selection unit (207) selects one combination parts from the combination data and others stored in the arrangement candidate storage unit (206).An image plotting unit (208) plots a three-dimensional image in which the selected combination parts are arranged in the cell.