Journal
OPTICS EXPRESS
Volume 24, Issue 7, Pages 7337-7346Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.007337
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Funding
- National Science Foundation (NSF) Directorate for Engineering [100000084, CMMI-1523048]
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This paper proposes a method that can measure high-contrast surfaces in real-time without changing camera exposures. We propose to use 180-degree phase-shifted (or inverted) fringe patterns to complement regular fringe patterns. If not all of the regular patterns are saturated, inverted fringe patterns are used in lieu of original saturated patterns for phase retrieval, and if all of the regular fringe patterns are saturated, both the original and inverted fringe patterns are all used for phase computation to reduce phase error. Experimental results demonstrate that three-dimensional (3D) shape measurement can be achieved in real time by adopting the proposed high dynamic range method. (C) 2016 Optical Society of America
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