| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a picture generation system, a presentation system, and an information storage medium capable of visually understandable showing an instructed operation without using any special instructing tool. SOLUTION: This picture generation system is provided with a center of gravity detecting part 513 for detecting the center of gravity position of a spot light from a laser pointer based on image pickup information from a CCD camera 40, a pointing coordinate detecting part 514 for detecting pointing coordinates based on the center of gravity position, a storage part 530 for storing the coordinate position of the spot light at the time of turning off the spot light, and a deciding part 540 for deciding whether or not the coordinate position of the spot light at the time of turning off the spot light and the coordinate position of the spot light at the time of re-turning on the spot light are present in a prescribed allowable range. When it is decided that the coordinate position is present in the allowable range by the deciding part 540, it is discriminated that a series of operations such as click operations are performed, and a picture corresponding to the click operations or the like is generated by using a picture generating part 520.</p> |
