| 摘要 |
<p>A system (50) for transcribing, into electronic form, markings (Figs 6, 7) drawn on a whiteboard or blackboard (52). An electronic camera (54) such as an ordinary video camera is mounted on a pan/tilt head (55), controlled by computer (56), in the ceiling or to the side of the board (52). Images are captured by directing the camera (54) successively at small regions of the board (52), then processing these snapshots electronically, leading to the generation of a complete, undistorted, high-resolution image of the entire board (52). <MATH></p> |
