| 摘要 |
PURPOSE:To provide a device by which the observe position detection of an observer and the position detection of a stylus manipulating body are surely and speedily performed in a three-dimensional image display system using a fixed screen. CONSTITUTION:Fixed reference points (a) and A and measuring object points (b) and B are linked by stretching members (c) and C in the shape of pantagraphs, and the three-dimensional coordinates of the observe points (b) and B are calculated by a turning angle THETAx in a direction orthogonal to the stretching operating plane of the stretching member, length 1y of the stretching member calculated by the difference (THETAy1+THETAy2) of the angle of the stretching member to the fixed point of an operating rod, and direction THETAy calculated by the sum of THETAy1 and THETAy2. |
