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首页> 外文期刊>Measurement Science & Technology >Accurate and fast out-of-plane displacement measurement of flat objects using single-camera based on the sampling moire method
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Accurate and fast out-of-plane displacement measurement of flat objects using single-camera based on the sampling moire method

机译：基于采样MOIRE方法，使用单摄像头准确和快速平面外平面位移测量。

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摘要

Out-of-plane displacement measurement is an important task not only to analyze the microelectronic device's behavior at the micro-scale but also to evaluate the structural health monitoring (SHM) of infrastructures at the meter-scale. In this study, an accurate and fast out-of-plane displacement measurement method with a single camera is presented, including the theoretical equations, and calibration of phase-gradient to out-of-plane displacement. Since the proposed method requires only a single grating image before and after deformation and analyzes by the sampling moire method, it yields high accuracy and speed. An experiment of out-of-plane displacement with three different focal length lenses has been conducted to verify the validity of this method. Experimental results indicated that both small and large out-of-plane displacement measurements could be performed accurately. This optical measurement technique will be of high value for SHM of various infrastructures under digital camera or video/cinema camera recording.
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