Recent advances in fringe projection technique for 3D shape measurement

Peisen S. Huang; Fu-Pen Chiang

doi:10.1117/12.365733

13 October 1999 Recent advances in fringe projection technique for 3D shape measurement

Peisen S. Huang, Fu-Pen Chiang

Proceedings Volume 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids; (1999) https://doi.org/10.1117/12.365733
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

This paper describes a new 3D surface contouring system based on a digital fringe projection and phase shifting technique. The new system takes full advantage of a novel projection display technology to provide the capability of digital fringe projection with high brightness and contrasts ratio. This capability helps improve system resolution and accuracy and make the full-field contouring of large objects possible. Fringe patterns with any cross-sectional intensity profile and spacing can be created digitally by software on a computer, limited only by the resolution and bit depth of the projection system. Also, purely software-based digital phase shifting technique can be applied to improve the resolution of the contouring technique. This eliminates the need for physically shifting the grating or other optical components and makes phase shifting digitally accurate. The concept of this new 3D surface contouring system is first introduced. Then issues related to projector nonlinearity, background noise, and phase unwrapping are addressed. FInally, some experimental results are presented.

Citation Download Citation

Peisen S. Huang and Fu-Pen Chiang "Recent advances in fringe projection technique for 3D shape measurement", Proc. SPIE 3783, Optical Diagnostics for Fluids/Heat/Combustion and Photomechanics for Solids, (13 October 1999); https://doi.org/10.1117/12.365733

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