| 摘要 |
<p>A laser scanning method and system (20) determines an outline of an object (22) by scanning a laser beam. A laser beam (26) is projected at the object (22) and a surface (28) underlying the object. The surface is configured to reflect the laser beam differently than the object. The laser beam is reflected off the object and the surface producing reflected beams (36). The reflected beams are received by a control (32) which determines whether the beams were reflected from the object or the surface. By identifying this with the laser position, the control can identify the outline of the object. As the laser beam is scanned over successive positions along the surface, the outline of the object is precisely determined. In a preferred embodiment, the laser scanning system further includes a transparent support for supporting the object at a predetermined distance from the surface thereby increasing the scanning resolution and improving the accuracy of the system.</p> |
