A fast three-dimensional shape measurement method based on color phase coding
Autor: | Biao Li, Haitao Wu, Guangyu Jiang, Yanjun Fu, Guisuo Xia, Jiancheng Zhang |
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Rok vydání: | 2016 |
Předmět: |
Measurement method
Computer science business.industry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Gray code Three dimensional shape Optics Gamma correction 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology business Algorithm Phase coding |
Zdroj: | Optik. 127:1011-1015 |
ISSN: | 0030-4026 |
Popis: | Gray code plus phase-shifting method embed the codeword into intensity to reconstruct complex three-dimensional shape. Owing to surface reflectivity and noise, it is less robust for measuring the surfaces of object with low contrast. In order to solve the problem, the codeword is embedded into phase to determine fringe order for obtaining the unwrapped phase. However, measurement speed is limited. Therefore, a fast three-dimensional shape measurement method based on color phase coding is proposed. As it adopts a color sinusoidal fringe to obtain wrapped phase and an additional color phase coding fringe to determine fringe order, the method can achieve fast complex three-dimensional shape measurement with different contrast. Color crosstalk and gamma nonlinearity are compensated to improve the measurement accuracy. The experiment results confirm the effectiveness and robustness of the proposed method. |
Databáze: | OpenAIRE |
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