3-D profilometry system using the temporal phase unwrapping method | |
Li Jianchang ; Jin Guanchang ; Ma Shaopeng | |
2010-05-07 ; 2010-05-07 | |
关键词 | Theoretical or Mathematical Experimental/ diffraction gratings optical variables measurement shape measurement/ 3D profilometry system temporal phase unwrapping method optical positioning measurements multifrequency sinusoidal computer generated grating virtual reference plane technique error reduction grid pitch complex shape measurement human face computer mouse/ A0630C Spatial variables measurement A0760 Optical instruments and techniques A4280F Gratings, echelles B7320C Spatial variables measurement B7320P Optical variables measurement |
中文摘要 | Optical positioning measurements are affected by error dependence between adjacent measuring points. A multifrequency sinusoidal computer generated grating with variable frequency and a phase was developed to independently measure each point location with a temporal phase unwrapping method used to evaluate the results. A virtual reference plane technique was developed to reduce the error due to grid pitch changes while measuring complex shapes. The system was applied to real examples like a human face and a computer mouse. These measuring results show that the temporal phase unwrapping method inhibits error spreading and reduces the effects of surface discontinuities. This system needs only 5 s to measure a shape with an accuracy of more than 99%. |
语种 | 中文 ; 中文 |
出版者 | Tsinghua Univ. Press ; China |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/15857] ![]() |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | Li Jianchang,Jin Guanchang,Ma Shaopeng. 3-D profilometry system using the temporal phase unwrapping method[J],2010, 2010. |
APA | Li Jianchang,Jin Guanchang,&Ma Shaopeng.(2010).3-D profilometry system using the temporal phase unwrapping method.. |
MLA | Li Jianchang,et al."3-D profilometry system using the temporal phase unwrapping method".(2010). |
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