摘要
根据激光三角测量法原理，设计了一套采用旋转平台的单目物体形貌测量系统。详细介绍了系统建模和硬件组成，并根据解析几何知识和系统的硬件特性，提出了标定坐标校正方案。最后，结合圆柱和圆锥体的测量数据对系统的测量精度进行了分析，并给出了尺寸介于4～30mm的被测对象三维重构图。实验结果表明，系统测量误差小于3．5％，该系统可望应用于宝石等小物体的三维测量、逆向工程以及优化设计中。
According to the principle of laser triangulation, an object＇s dimension measurement and three-dimension reconstruction system with one camera and a rotated platform is designed. The math modeling and hardware of this system are described in detail. According to the knowledge of analytic geometry and the hardware property of this system, a useful coordinaterevising method was created. At last, the data of column and taper＇s objects was analyzed in order to get this system＇s accuracy, and kinds of objects whose dimensions are among 4- 30mm were reconstructed in three dimensions. The result shows that the measurement error of this system is lower than 3. 5 %. This system will be potentially used in 3D measuring, reverse engineering and optimized design of small objects such as precious stone etc.
出处
《光学仪器》
2008年第6期21-26,共6页
Optical Instruments
关键词
激光三角法
三维重构
光电检测
宝石
laser triangulation
3D reconstruction
photoelectric measurement
precious stone
