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Applications of Structured Light to 3D Surface Topography Using Moire Pattern and to 3D Imaging of Phase Objects

Guo, Haiyun
http://orcid.org/0000-0001-6774-0298
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1628255378782863

Abstract Details

2021, Master of Science (M.S.), University of Dayton, Electro-Optics.
Three-dimensional (3D) reconstruction plays an important role in imaging research filed. Structured light technology has been widely used in 3D imaging, recognition and measurement, indicating great industrial and commercial value. In this thesis, a simple and robust technique of Moiré topography with single-image capture and incorporating digital filtering along with a four-step digitally implemented phase-shifting method is introduced for 3D surface mapping. Feature details in the order of tens to hundreds of microns can be achieved using interferometrically generated structured light to illuminate the object surface. The feasibility of this technique is verified experimentally, and applications to metallic surfaces are demonstrated. Next, a simple non-interferometric incoherent light propagation model is introduced to perform 3D profiling of transparent objects with typical thicknesses in the order of mm to cm by analyzing the distorted captured image behind the object. A two-dimensional (2D) cosine fringe is used as the incident reference image, whose periodicity is markedly altered by the shape of the object. By monitoring the local change in the period, the surface profile is simulated and optimized to achieve minimal error with experimental data to determine the final morphology. Besides, core principles of ghost imaging and optical scan holography are also discussed.
Partha Banerjee, Dr. (Advisor)
112 p.
Electrical Engineering; Optics; Physics

Recommended Citations

Citations

  • Guo, H. (2021). Applications of Structured Light to 3D Surface Topography Using Moire Pattern and to 3D Imaging of Phase Objects [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1628255378782863

    APA Style (7th edition)

  • Guo, Haiyun. Applications of Structured Light to 3D Surface Topography Using Moire Pattern and to 3D Imaging of Phase Objects. 2021. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1628255378782863.

    MLA Style (8th edition)

  • Guo, Haiyun. "Applications of Structured Light to 3D Surface Topography Using Moire Pattern and to 3D Imaging of Phase Objects." Master's thesis, University of Dayton, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1628255378782863

    Chicago Manual of Style (17th edition)

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This open access ETD is published by University of Dayton and OhioLINK.