| 摘要 |
An axis deviation detecting device (100, 200) includes: a first position acquisition unit (101) which acquires a position of a first projection point projected targeting a first target point on a first projection screen located at a first distance from the projector device; a second position acquisition unit (102) which acquires a position of a second projection point projected targeting a second target point on a second projection screen located at a second distance from the projector device; a first axis deviation detecting unit (103) which detects a value of a translational deviation along a horizontal axis of the projector device and a value of a rotational deviation about a vertical axis of the projector device, using (i) a horizontal component of a first positional difference between the first target point and the first projection point and (ii) a horizontal component of a second positional difference between the second target point and the second projection point; and a second axis deviation detecting unit (104) which detects a value of a translational deviation along the vertical axis of the projector device and a value of a rotational deviation about the horizontal axis of the projector device, using (i) a vertical component of the first positional difference and (ii) a vertical component of the second positional difference. |
