PHOTOGRAPHING POSITION SPECIFYING SYSTEM, DEVICE, AND METHOD

摘要

PROBLEM TO BE SOLVED: To provide a photographing position specifying system, a photographing position specifying device, and a photographing position specifying method capable of precisely obtaining the position of photographing an image even in an environment where use of a radio wave is not allowed. SOLUTION: The photographing position specifying device includes: an input section 11 for acquiring a photographing instruction; a photographing section 12 for photographing an object when the photographing instruction is acquired; a storage section 17 for storing positions of at least three terminals in advance; a communication section 13 for transmitting a control signal using a wired communication to the at least three terminals when the photographing instruction is acquired; a sound wave reception section 14 for receiving sound waves transmitted from the at least three terminals; a time acquisition section 15 for acquiring the time when the sound wave is received and the time when the control signal is transmitted; and a control section 16 for calculating the distance to each terminal on the basis of the difference between the time when the sound wave is received and the time when the control signal is output and a sound velocity and specifying the position of the own photographing position specifying device 10a on the basis of the distance to each terminal. The storage section 17 stores the photographing result and the position of the own photographing position specifying device in association with each other. COPYRIGHT: (C)2007,JPO&INPIT