Zhang High-Speed 3D Imaging with Digital Fringe Projection Techniques

Erscheinungsjahr 2016
ISBN: 978-1-4822-3434-3
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 216 Seiten

Reihe: Optical Sciences and Applications of Light

Digital fringe protection (DFP) techniques are used for non-contact shape measurement of 3D images. In the rapidly expanding field of 3D high-speed imaging, the demand for DFP continues to grow due to the technology’s fast speed, flexibility, low cost, and high accuracy.

High-Speed 3D Imaging with Digital Fringe Projection Techniques discusses the generation of digital fringe with digital video projection devices, covering a variety of core technical aspects. The book begins by establishing the theoretical foundations of fringe pattern analysis, reviewing various 3D imaging techniques while highlighting the advantages of DFP. The author then:

- Describes the differences between digital light processing (DLP), liquid crystal display (LCD), and liquid crystal on silicon (LCoS)

- Explains how to unwrap phase maps temporally and spatially

- Shows how to generate fringe patterns with video projectors

- Demonstrates how to convert phase to coordinates through system calibrations

- Provides a detailed example of a built-from-scratch 3D imaging system

Incorporating valuable insights gained during the author’s 15+ years of 3D imaging research, High-Speed 3D Imaging with Digital Fringe Projection Techniques illuminates the pathway to advancement in high-speed 3D optical imaging using DFP.

Autoren/Hrsg.

Zhang, Song

Fachgebiete

• Technische Wissenschaften Technik Allgemein Technische Optik, Lasertechnologie
• Mathematik | Informatik EDV | Informatik Informatik Theoretische Informatik
• Technische Wissenschaften Sonstige Technologien | Angewandte Technik Lasertechnologie, Holographie

Inhaltsverzeichnis

Introduction
Time of Flight
Laser Triangulation
Stereo Vision
Structured Light
Digital Fringe Projection
Book Organization
Concluding Remarks

Theoretical Foundation of Fringe Analysis Techniques
Introduction
Fringe Pattern Generation with Coherent Laser Interference
Fringe Analysis Methods
Two- and Multiwavelength Phase-Shifting Algorithms
Summary Remarks

Digital Fringe Generation Technique
Introduction
Basics of DFP System
Digital Video Projection Technologies
Summary Remarks

Temporal Phase Unwrapping for Digital Fringe Projection Systems
Introduction
Multifrequency Phase-Shifting Algorithm
Adding Multiple Binary Coded Structured Patterns
Encoding Fringe Order into Phase-Shifted Fringe Patterns
Adding a Single Stair Pattern
Adding a Single Statistical Pattern
Embedding Statistical Pattern into Phase-Shifted Patterns
Further Discussion
Summary Remarks

Spatial Phase-Unwrapping Algorithm for Real-Time Applications
Introduction
Algorithm
Experiments
Summary Remarks

Projector Nonlinear Gamma Calibration and Correction
Introduction
Principle
Simulations
Experiments
Summary Remarks

Digital Fringe Projection System Calibration
Introduction
Reference-Plane-Based DFP System Calibration
Accurate DFP System Calibration
Example System Calibration
Calibration Evaluation
Summary Remarks

Hands-On Example of System Design and Development
Problem Statement
Mechanical Design and Integration
Calibration Target
System Calibration
3D Reconstruction
Summary Remarks

Practical Considerations for System Development
Angle of Fringe Stripes
Other Considerations
Summary Remarks

Toward High-Speed 3D Imaging with Phase-Shifting Methods
Introduction
Real-Time 3D Imaging with Sinusoidal Fringe Projection
Superfast 3D Imaging with Binary Defocusing
Discussions
Summary Remarks
References

Über Autor(innen)

Song Zhang earned his BS from the University of Science and Technology of China, and his MS and PhD in mechanical engineering from Stony Brook University. He then spent three years in the Mathematics Department at Harvard University before joining Iowa State University as an assistant professor of mechanical engineering. He recently moved to Purdue University, where he is currently an associate professor of mechanical engineering. A widely published and highly decorated SPIE fellow, Professor Zhang is often credited with developing the first-ever high-resolution, real-time 3D optical imaging system. Besides being extensively utilized in academia, the technologies Professor Zhang has developed have been used by the rock band Radiohead to create a music video for the 2007 song "House of Cards," and by Zaftig Films to produce the 2015 movie Focus.