Download High-Speed 3D Imaging with Digital Fringe Projection by Song Zhang PDF

By Song Zhang

Digital fringe projection (DFP) concepts are used for non-contact form dimension of 3D photographs. within the speedily increasing box of 3D high-speed imaging, the call for for DFP keeps to develop as a result technology’s quickly velocity, flexibility, competitively priced, and excessive accuracy.

High-Speed 3D Imaging with electronic Fringe Projection Techniques discusses the iteration of electronic fringe with electronic video projection units, overlaying various middle technical features. The publication starts off by means of setting up the theoretical foundations of fringe development research, reviewing a variety of 3D imaging innovations whereas highlighting some great benefits of DFP. the writer then:

  • Describes the variations among electronic mild processing (DLP), lcd (LCD), and liquid crystal on silicon (LCoS)
  • Explains find out how to unwrap part maps temporally and spatially
  • Shows how one can generate fringe styles with video projectors
  • Demonstrates how one can convert section to coordinates via process calibrations
  • Provides a close instance of a built-from-scratch 3D imaging system

Incorporating helpful insights won in the course of the author’s 15+ years of 3D imaging learn, High-Speed 3D Imaging with electronic Fringe Projection Techniques illuminates the pathway to development in high-speed 3D optical imaging utilizing DFP.

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Additional resources for High-Speed 3D Imaging with Digital Fringe Projection Techniques

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00 ms) results. 4 SUMMARY REMARKS DFP technologies has its overwhelming advantages over other 3D imaging techniques because its achievable high accuracy, high speed, and flexibility. This chapter summarized three key digital video projection technologies: DLP, LCD, and LCoS. Because of their different operation mechanisms, measurement error could be introduced without careful considerations and handling. The key to successfully perform measurements for a DFP system is to properly generate fringe patterns with a computer, send those patterns to the projector, and then capture those patterns by the camera.

All DLP projectors include a light source, a color filter system, at least one DMD, DLP electronics, and an optical projection lens. 3, the color image is produced by placing a color wheel into the system. The color wheel, that contains red, green, and blue filters, spins at a very fast speed, thus red, green, and blue channel images will be projected sequentially onto the screen. 3 Configuration of a single-chip digital line processing (DLP) projector. (From P. S. Huang, C. -P. Chiang, Opt. Eng.

Chapter 7 discusses the importance of DFP system calibration. The fringe analysis methods only provide phase instead of coordinate information. This chapter covers the simple yet widely used reference-plane-based phase to coordinate conversion method. Alternatively, geometric calibration can be adopted to estimate system parameters for phase to coordinates conversion. , OpenCV) for parameter estimation. This chapter covers the basic principle of the calibration method we developed and generalizes the calibration approach to a system even when the projector is not in focus.

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