三维物体表面测量光传感技术  

3-D Sensing Technology for Object Surface Measurement

作　　者：戴宁[1] 崔海华[1] 程筱胜[1] 廖文和[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《南京航空航天大学学报》2009年第6期789-793,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：教育部博士点基金(20070287055)资助项目;江苏省科技攻关(BE2005014)资助项目;江苏省高技术研究计划(DG2006035)资助项目;江苏省博士后科研(0701051B)资助项目

摘　　要：建立了小孔成像摄相机模型,提出了将投影仪看作主动相机的隐函数线性模型。采用了四幅相移光栅条纹编解码技术进行数据匹配,提出了基于质量图的枝切截断算法,处理解码过程中由于图像噪声、孔洞、阴影等导致的相位误差。最后,搭建了实验原型系统,选取了实物模型进行测量试验。实验结果表明,该3-D传感系统工作稳定、精度高,在150 mm×200 mm的测量范围,精度误差约±0.04 mm。The model for the projector and CCD camera is established with the implicit model and the pinhole model. 3-D surface points are matched using four phase shifting codes. A branch cut algorithm based on quality map is advanced to deal with the phase error owing to the image noise, hole and shadow. etc.. Finally, the 3-D sensing measurement instrument is developed and some physical models are tested. Analysis results show that the system has good performance and precision. The variability of the measurement error is about ±0.04 mm over the measurement area 150 mm × 200 mm.

关 键 词：三维传感 结构光 相移编码 解包裹 

分 类 号：TH391.4[机械工程—机械制造及自动化]