High-efficiency 3D reconstruction with a uniaxial MEMS-based fringe projection profilometry

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Abstract
Micro-Electro-Mechanical System (MEMS) scanning is increasingly popular in 3D surface measurement with the merits of the compact structure and high frame-rate. In this paper, we achieve real-time fringe structured 3D reconstruction by using a uniaxial MEMS-based projector. To overcome the limitations on uniaxial MEMS-based projector of lensless structure and unidirectional fringe projection, a novel isophase plane model is proposed, in which the laser line from MEMS-based projector is regarded as an isophase plane. Our model directly establishes the mapping relationship between phase and spatial 3D coordinates through the intersection point of camera back-projection light ray and isophase plane. Furthermore, a flexible calibration strategy to obtain 3D mapping coefficients is introduced with a specially designed planar target. Experiments demonstrated that our method can achieve high-accuracy and real-time 3D reconstruction.
Funding Information
  • National Natural Science Foundation of China (61875137)
  • The Fundamental Research Project of Shenzhen Municipality (JCYJ20190808153201654)
  • The Sino-German Cooperation Group (GZ 1391)
  • The key Laboratory of Intelligent Optical Metrology and Sensing of Shenzhen (ZDSYS20200107103001793)

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