| 摘要 |
<p>A system whereby the topography of a surface may be measured and recorded comprising a laser (L) producing a narrow beam (LO) striking the surface at point (O), a television camera (T) capable of detecting the angular bearing of the laser illuminated spot at point (O) in terms of three-dimensional co-ordinates (x,y, z), and a computer programmed to correlate signals from the television camera as the laser beam is scanned across the surface, thus to produce a reading of the three-dimensional shape of the surface. Such a system can be used, for example, for monitoring the surface topography of a stockpile of bulk materials to be harvested so as to ensure optimum performance of a material transport system, or to establish the shape of a building or land mass in a surveying operation.</p> |
