Binary phase-shifting in digital fringe projection has demonstrated significant merit over conventional sinusoidal phases-shifting methods in terms of measurement speed and simplicity. This paper will show that compared to conventional sinusoidal methods, binary defocusing 1) can better resolve 3D micro-structures; and 2) can achieve kilo-Hz 3D shape measurement rates. These features are critical for measuring dynamically deformable objects, such as the beating heart.
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Measuring Dynamic 3D Micro-Structures Using a Superfast Digital Binary Phase-Shifting Technique
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Zhang, S, Wang, Y, Laughner, JI, & Efimov, IR. "Measuring Dynamic 3D Micro-Structures Using a Superfast Digital Binary Phase-Shifting Technique." Proceedings of the ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. Volume 2: Systems; Micro and Nano Technologies; Sustainable Manufacturing. Madison, Wisconsin, USA. June 10–14, 2013. V002T02A015. ASME. https://doi.org/10.1115/MSEC2013-1088
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