3-D measurement of dynamic and isolated objects based on color-encoded sinusoidal fringe

WANG Hui; BAI Leyuan; MA Ke; ZHANG Qican

doi:10.7510/jgjs.issn.1001-3806.2014.03.003

When 3-D shapes of dynamic objects, especially with isolated area and discontinuous distribution, are measured with the traditional fringe projection and phase analysis method, it is difficult to get reliable expansion phase. A technique based on color-encoded sinusoidal fringe projection was proposed to solve the problem. The projected sinusoidal fringes were marked with two-level encoded color. After capturing the deformed fringe pattern, the fringe order was determined according to the color sequence based on the coded characteristics, and the cut-off phase was unwrapped. Finally, the 3-D shape of the dynamic object with isolate area was reconstructed. The results show the decoding method is stable and reliable. 3-D shape of the spatially isolated dynamic objects can be exactly reconstructed with only one shot.

3-D measurement of dynamic and isolated objects based on color-encoded sinusoidal fringe

Corresponding author: ZHANG Qican, zqc@scu.edu.cn

1. School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China

Received Date: 2013-07-29

Accepted Date: 2013-08-29

Available Online: 2014-05-25

Abstract: When 3-D shapes of dynamic objects, especially with isolated area and discontinuous distribution, are measured with the traditional fringe projection and phase analysis method, it is difficult to get reliable expansion phase. A technique based on color-encoded sinusoidal fringe projection was proposed to solve the problem. The projected sinusoidal fringes were marked with two-level encoded color. After capturing the deformed fringe pattern, the fringe order was determined according to the color sequence based on the coded characteristics, and the cut-off phase was unwrapped. Finally, the 3-D shape of the dynamic object with isolate area was reconstructed. The results show the decoding method is stable and reliable. 3-D shape of the spatially isolated dynamic objects can be exactly reconstructed with only one shot.

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Reference (15)

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3-D measurement of dynamic and isolated objects based on color-encoded sinusoidal fringe

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