Projection moiré profilometry with high-dynamic range image

Sen-Yih Chou; Sien Chi; Chia-Hung Cho; Ming-Jhe Du

doi:10.1117/1.OE.51.2.021112

2 March 2012 Projection moiré profilometry with high-dynamic range image

Sen-Yih Chou, Sien Chi, Chia-Hung Cho, Ming-Jhe Du

Author Affiliations +

Optical Engineering, Vol. 51, Issue 2, 021112 (March 2012). https://doi.org/10.1117/1.OE.51.2.021112

Abstract

As a type of optical measuring apparatus, the charge-coupled diode (CCD) camera provides the capability of increasing the speed of measurement by inspecting an area with only one shot. However, the CCD camera's high-variation range of reflectivity presents an exceptional challenge for the optical measurement established on the surface. We present a method that could enable one to acquire an image with a high-dynamic range in one shot without any reduction in spatial resolution. Because of the sufficient signal-to-noise ratio, the method presented could perform the robustness of the phase-retrieving algorithm, and the surface topography could be measured more accurately.

Citation Download Citation

Sen-Yih Chou, Sien Chi, Chia-Hung Cho, and Ming-Jhe Du "Projection moiré profilometry with high-dynamic range image," Optical Engineering 51(2), 021112 (2 March 2012). https://doi.org/10.1117/1.OE.51.2.021112

Published: 2 March 2012

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