| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect a position of an indication body even when a projection distance of a projector is changed.SOLUTION: A projector 10 acquires a distance from the projector 10 to a screen. The projector 10 increases a shutter speed of an electronic shutter of an imaging section 170 when the acquired distance is short, and decreases the shutter speed of the electronic shutter of the imaging section 170 when the acquired distance is long. An indication body 20 outputs infrared light for a predetermined period. The imaging section 170 of the projector 10 images the infrared light output by the indication body 20 at a set shutter speed and identifies a position of the indication body 20.SELECTED DRAWING: Figure 2 |
