| 摘要 |
<p>Disclosed is an image input device arranged in such a way that a fluorescent X-ray image is photographed by a TV camera (16), and an image signal thereof is input into a CPU (26). The image input device is connected to an output of the TV camera (16), and comprises a difference circuit (28) for determining the difference between two picture signals obtained at a prescribed time interval, an object extracting circuit (36) for extracting an object image in accordance with the results of the difference, a position judging circuit (38) for judging whether or not the object image thus extracted is located within a picture screen, and a camera position controller (40) for controlling the position of the TV camera (16) in accordance with the results of judgement made by the position judging circuit.</p> |
