Infrared and Laser Engineering, Volume. 49, Issue 6, 20200049(2020)

Modified dual-frequency geometric constraint fringe projection for 3D shape measurement

Yuwei Wang1, Xiangcheng Chen2, and Yajun Wang3、*
Author Affiliations
  • 1安徽农业大学 工学院,安徽 合肥 230036
  • 2武汉理工大学 自动化学院,湖北 武汉 430070
  • 3武汉大学 测绘遥感信息工程国家重点实验室,湖北 武汉 430079
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    Dual-frequency fringe projection methods have been widely used in three-dimensional (3D) shape measurement, but the phase unwrapping is very sensitive to random noises. A modified dual-frequency geometric constraint fringe was presented. The robustness of phase unwrapping can be effectively enhanced by improving the frequency of low-frequency phase. During the 3D shape measurement, firstly, the five-step phase-shifting algorithm was used to extract two wrapped phases. Secondly, the low-frequency phase was unwrapped based on the geometric constraint method. Finally, the dual-frequency algorithm was used to unwrap the high-frequency phase, and then the 3D shape could be reconstructed. Both simulations and experiments demonstrate that the modified dual-frequency fringe is more robust and applicable than the traditional one.

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    Yuwei Wang, Xiangcheng Chen, Yajun Wang. Modified dual-frequency geometric constraint fringe projection for 3D shape measurement[J]. Infrared and Laser Engineering, 2020, 49(6): 20200049

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    Paper Information

    Category: Special issue-Optical 3D imaging and sensing

    Received: Mar. 14, 2020

    Accepted: --

    Published Online: Aug. 19, 2020

    The Author Email: Wang Yajun (yjwangisu@whu.edu.cn)

    DOI:10.3788/IRLA20200049

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