一种新的360°三维轮廓术  

A Novel 360° 3D Profilometry

作　　者：赵宏[1] 宋元鹤[1] 李根乾[1] 乐开端[1] 陈文艺[1] 谭玉山[1] 

机构地区：[1]西安交通大学机械学院激光与红外应用研究所

出　　处：《光学学报》1999年第4期497-500,共4页Acta Optica Sinica

摘　　要：提出了运用相移技术的光刀投影式测量３６０°回转物体三维轮廓的新方法。该方法对投影光刀引入正弦分布光场，利用相移技术对光刀投影狭缝进行相位计算，可得出各点的包裹相位分布，然后再利用光刀投影测量原理得到的高度信息对相位进行去包裹处理，从而得到具有较高精度的相位测量结果。最后根据相位与物体高度的几何关系，得到物体的三维轮廓数据。A new method of 360° turning 3D shape measurement is presented in which light sectioning and phase shifting techniques are both used. A sine light field is applied in the projected light stripe, meanwhile phase shifting technique is used to calculate phase of the light slit. The wrapped phase distribution of the slit is formed and the unwrapping process will be made by means of the height information based on the light sectioning method. So phase measuring results with better precision can be obtained. The target 3D shape data can be produced according to geometric relationship between phase and the object heights. The principles of this method are discussed in detail and experimental results are shown.

关 键 词：相移 光刀测量 三维轮廓术 面形测量 

分 类 号：TG806[金属学及工艺—公差测量技术]