Patent ID: 7343268

Claim:
A three-dimensional modeling method of generating three-dimensional electronic data of a building structure, said three-dimensional modeling method comprising the steps of: (a) inputting a photograph and a horizontal planar shape of the building structure expressed by electronic data; (b) inputting a positional relation between a shooting position of the photograph and the building structure and a shooting parameter that specifies a viewing direction and an angle of view at a time of photographing; (c) defining the planar shape of the building structure and the shooting position in a virtual space set for generation of the three-dimensional electronic data, based on the input positional relation, and arranging the photograph at a position defined by the input shooting parameter in the virtual space; and (d) specifying a height of the building structure by raising the defined planar shape of the building structure in the virtual space to reach an extension of a virtual line that connects the shooting position defined in the virtual space with a top of the building structure in the photograph arranged in the virtual space, so as to specify a shape of the building structure in the direction of height.