| 摘要 |
PROBLEM TO BE SOLVED: To eliminate calibration work for a user even if setting of a projection apparatus is changed after calibration.SOLUTION: A computer 61 includes: a measuring function 61e for inputting a detection position of a measuring point, which is inputted from a position detector 4 during photographing of a measurement video; an initial projection parameter input function 61f for inputting an initial projection parameter from a projection device 3; a projection parameter re-inputting function for inputting a second projection parameter from the projection device 3 when the projection parameter of the projection device 3 is changed; a calibration function for calculating coordinate conversion parameters A and B for coordinate conversion from a position of the measuring point of a video coordinate system, a detection position of the measuring point of a detection coordinate system, the initial projection parameter and the second projection parameter; and a coordinate conversion function 61c for converting a coordinate system of the detection position inputted from the position detector 4 by using the parameters A and B from the detection coordinate system to the video coordinate system. |
