| 摘要 |
PROBLEM TO BE SOLVED: To provide a projection device that can be easily subjected to geometric transformation even when an adjustment chart is projected larger than a projected object, and an outer frame of a projection area is located outside the projected object.SOLUTION: Let us image that as shown in Fig.(a), an adjustment chart 600 is projected larger than a screen 200 serving as the projected object, and an outer frame of the adjustment chart 600 is not projected onto the screen 200. The adjustment chart 600 includes a cross line 610 including a first cross line 611 and a second cross line 612 which serve as a diagonal line. Since an upper right-hand angle of the outer frame is present on an extension line of the first cross line 611, in order for the first cross line 611 to be aligned with the diagonal line of the screen 200, first of all, as shown in Fig.(a), when the first cross line 611 crosses an upper side of the screen, as shown in Fig.(b), the geometric transformation is performed so as to move the upper right-hand angle of the outer frame toward a lower side. |
