Study on Fourier transforms profilometry based on bi-color projecting

Wenjin Chen; Xianyu Su; Yiping Cao; Qiancan Zhang; Liqun Xiang

doi:10.1117/12.667936

20 January 2006 Study on Fourier transforms profilometry based on bi-color projecting

Wenjin Chen, Xianyu Su, Yiping Cao, Qiancan Zhang, Liqun Xiang

Proceedings Volume 6027, ICO20: Optical Information Processing; 602715 (2006) https://doi.org/10.1117/12.667936
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

We propose an improved FTP based on bi-color grating projecting. Two individual sinusoidal fringe patterns with π phase difference can be decoded from the deformed bi-color sinusoidal fringe pattern captured by color digital camera. Accessing the two fringe patterns, we can not only eliminate zero order spectra but also automatically build a binary mask at the same time to mark the valid measurement area easily, by which unwrapping phase time is shorten as well as phase error from invalid area is not transferred into valid area; Furthermore, we can easily expand the captured non-full-field deformed fringe pattern to form full field fringe pattern to guarantee frequency resolution.

Citation Download Citation

Wenjin Chen, Xianyu Su, Yiping Cao, Qiancan Zhang, and Liqun Xiang "Study on Fourier transforms profilometry based on bi-color projecting", Proc. SPIE 6027, ICO20: Optical Information Processing, 602715 (20 January 2006); https://doi.org/10.1117/12.667936

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