Development of Sampling Moire Camera for Real-Time Phase Analysis

Abstract:

Sampling Moire method is one of the convenient phase analysis methods. The accuracy of phase difference analysis is from 1/100 to 1/1000 of the grating pitches. This method is useful for a real-time measurement because the phase analysis can be performed from a single-shot image. In this paper, we developed a sampling moire camera which can analyze grating phase in real time. This camera is composed of a CMOS sensor and a FPGA. A two-dimensional grating image taken by the CMOS sensor was analyzed by the FPGA in real time. An application on a real-time deformation measurement of a cantilever is demonstrated.

• Periodical: Applied Mechanics and Materials (Volume 83)
• Pages: 48-53
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.83.48
• Online since: July 2011
• Authors: Motoharu Fujigaki, Yuji Sasatani, Akihiro Masaya, Hiroyuki Kondo, Makiko Nakabo, Takuya Hara, Yoshiharu Morimoto, Daisuke Asai, Teiji Miyagi, Noboru Kurokawa
• Keywords: Deformation Measurement, Real-Time, Sampling Moire Camera, Sampling Moire Method, Shape Measurement

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