| 摘要 |
PROBLEM TO BE SOLVED: To provide a projection system able to use a capture camera that does not require high resolution and able to highly accurately adjust the alignment of superposed images by simple signal processing.SOLUTION: A photographing device photographs a range where projection images are superposed and projected. Two photographing devises are provided, one of which photographs the left lower corner of the superposed image and the other photographs the right lower corner. Each photographing range includes test patterns displayed on two corresponding images. The control device determines adjustment information from the amount of displacement between the test patterns. Based on adjustment information, the control device instructs a projector to adjust the zooming position of a projection lens. After an amount of zoom is adjusted, a control device instructs the projector to adjust a difference between projecting positions (the adjustment of the horizontal position of a projection image and the adjustment of the vertical position of the projection image). |
