1. A method for creating an aerial photograph data set. comprising a step of selecting, in a direction of air flight(flight direction) for aerial photography and/or in the cross direction crossing the flight direction out of a plurality of captured images obtained in the aerial photography, M×N captured images (where M and N are positive integers of no more than 1/(1−A) and 1/(1−B) respectively) which captured images include a target point in an overlap section, wherein A is an endlap ratio in the flight direction (wherein A=1 indicates complete overlap, and 0≦A<1), while B being a sidelap ratio in the cross direction (wherein B=1 indicates complete overlap, and 0≦B<1), a step of producing selected images by selecting an image section in a specific range in each of the selected captured image which range includes the target point in the overlap section. and a step of creating, along the flight direction serving as a first axis and the cross direction serving as a second axis, an data set as a matrix with M columns along the first axis and N rows along the second axis, in imaging sequence along the first axis and in imaging sequence along the second axis respectively.