| 摘要 |
PROBLEM TO BE SOLVED: To easily improve calibration accuracy of a camera for measuring a size of a vehicle.SOLUTION: A vehicle size measurement device for measuring a size of a vehicle passing through a tollgate comprises: an imaging section installed at a position where the imaging section images the vehicle passing through the tollgate; an input section for inputting a global coordinate value of a reference point predetermined as a point in a global coordinate space indicating a position of an existing reference installation object installed at the tollgate along a travel lane in which the vehicle travels; a three-dimensional position calculation section for calculating a global coordinate value indicating a position of the vehicle in the global coordinate space in accordance with a predetermined operational expression on the basis of an image coordinate value indicating a position of the vehicle in an image imaged by the imaging section; and an operation coefficient calculation section for calculating an operation coefficient included in the operational expression on the basis of an image coordinate value indicating a position of the reference point in the image imaged by the imaging section and the global coordinate value of the reference point input by the input section. |
