| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotation detecting system capable of detecting the rotations of a subject in a surface vertical to a photographing surface. <P>SOLUTION: An image sensor 25 photographs a reflector 2 which rotates in a surface vertical to a photographing surface 43. The reflector 2 includes a retroreflective sheets 5R and 5L. An MCU 23 compares areas of images of the two photographed retroreflective sheets 5R and 5L, and calculates a rotating direction and the rotating amount of the reflector 2 in the surface vertical to the photographing surface 43, on the basis of the comparison result. A computer 33 sets a posture of a virtual camera 55 for drawing a virtual three-dimensional space, on the basis of the rotating direction and the rotating amount of the reflector 2 which are calculated by the MCU 23. <P>COPYRIGHT: (C)2012,JPO&INPIT |
