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	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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