| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a detection system in which a position of each object to be detected is detected and each object to be detected is identified by utilizing only light. <P>SOLUTION: A detection system includes at least two pens 4, a color camera 9 and an IR camera 10. The at least two pens 4 output infrared rays and visible light beams to a screen 6 so as to settle them within a fixed range each other and output visible light beams having RGB values different from each other. In the color camera 9, an infrared cut filter 9A is provided and visible light beams are detected. In the IR camera 10, a visible light cut filter 10A is provided and infrared rays are detected. On the basis of a photographic result of the IR camera 10, the detection system 1 then calculates coordinates of each of light spots formed at contacts of the infrared rays outputted from the pens 4 and the screen 6 and, on the basis of a photographic result of the color camera 9, calculates RGB of each of visible light beams within the predetermined range around the calculated coordinates of each light spot, thereby identifying which one of the pens 4 has outputted each of the visible light beams. <P>COPYRIGHT: (C)2012,JPO&INPIT |
