New method for improving the measuring precision of 3D shapes

Wenjing Chen; Xianyu Su

doi:10.1117/12.402840

6 October 2000 New method for improving the measuring precision of 3D shapes

Wenjing Chen, Xianyu Su

Proceedings Volume 4231, Advanced Optical Manufacturing and Testing Technology 2000; (2000) https://doi.org/10.1117/12.402840
Event: International Topical Symposium on Advanced Optical Manufacturing and Testing Technology, 2000, Chengdu, China

Abstract

Fourier transform profilometry (FTP) is a popular method for automatic 3-D shape measurement, which has been widely used in many fields. Now a new method for improving the precision of FTP is presented, in which a gray image of the measured object is captured by CCD camera and used to eliminate the zero frequency component of the deformed pattern. This results in improving the measurement precision and the range of FTP. Theoretical analysis and experiments verify that this method achieves the measurement precision as π phase-shifting technique does, and the experimental setup is simpler because of no phase-shift device.

Citation Download Citation

Wenjing Chen and Xianyu Su "New method for improving the measuring precision of 3D shapes", Proc. SPIE 4231, Advanced Optical Manufacturing and Testing Technology 2000, (6 October 2000); https://doi.org/10.1117/12.402840

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