1 January 2003 High-speed 3-D shape measurement based on digital fringe projection
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Abstract
A high-speed 3-D shape measurement technique based on digital fringe projection has been developed and experimented. This technique uses a computer-generated color fringe pattern whose red, green, and blue channels are sinusoidal fringe patterns with a 120-deg phase shift between neighboring channels. When this color fringe pattern is sent to a digital-micromirror-device (DMD) based video projector with no color filter, three gray-scale fringe patterns are repeatedly projected to an object surface in sequence with a cycle time of approximately 10 ms. The three phase-shifted fringe patterns deformed by the object surface are captured by a CCD camera with proper synchronization between the camera and the projector. The 3-D shape of the object surface is reconstructed by using a phase wrapping and unwrapping algorithm and a phase-coordinate conversion algorithm. Experimental results demonstrated the feasibility of this technique for high-speed 3-D shape measurement with a potential measurement speed up to 100 Hz.
© (2003) Society of Photo-Optical Instrumentation Engineers (SPIE)
Peisen S. Huang, Peisen S. Huang, Chengping Zhang, Chengping Zhang, Fu-Pen Chiang, Fu-Pen Chiang, } "High-speed 3-D shape measurement based on digital fringe projection," Optical Engineering 42(1), (1 January 2003). https://doi.org/10.1117/1.1525272 . Submission:
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