Compact fringe projection profilometer

Lei Huang; Sian Shing Chng; Cheok Peng Lee; Patrick S. K. Chua; A. Asundi

doi:10.1117/12.851436

14 April 2010 Compact fringe projection profilometer

Lei Huang, Sian Shing Chng, Cheok Peng Lee, Patrick S. K. Chua, A. Asundi

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 752256 (2010) https://doi.org/10.1117/12.851436
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

A compact fringe projection profilometer is recently developed for profiling small objects. A handphone-size microprojector with LED illumination is assembled into our system to minimize the size optical 3D sensor. In our compact 3D shape measurement system, the approaches of phase shifting, temporal phase unwrapping and modified least-squares calibration are utilized to achieve high precision and an easy procedure. The portable system allows for easy and convenient 3D profile measurement to meet the requirements under diverse application conditions, such as profiling small turbine blades in aerospace workshop. Experimental results testify to the robust and reliable performance of this LED micro-projector based FPP system.

Citation Download Citation

Lei Huang, Sian Shing Chng, Cheok Peng Lee, Patrick S. K. Chua, and A. Asundi "Compact fringe projection profilometer", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752256 (14 April 2010); https://doi.org/10.1117/12.851436

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