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Updated: Jan 1, 2026
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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Published on: December 3, 2013
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Improved unwrapped phase retrieval method of a fringe projection profilometry system based on fewer phase-coding
Applied Optics
|December 25, 2019
Summary
This study introduces an improved phase demodulation method using novel phase-coding patterns for accurate 3D imaging. The technique enhances decoding for complex objects, confirming its broad applicability.
Area of Science:
- Optics and Photonics
- Image Processing
- Metrology
Background:
- Phase demodulation is crucial for accurate 3D imaging.
- Existing methods face challenges with complex or discontinuous objects.
- Advanced phase-coding patterns are needed for improved accuracy.
Purpose of the Study:
- To propose an improved phase demodulation method using two additional phase-coding patterns.
- To enhance the accuracy and applicability of 3D imaging techniques.
- To address limitations in decoding complex and discontinuous object data.
Main Methods:
- Embedding six equally spaced coding phases within coded fringes in a specific sequence.
- Generating a phase-order map by uniquely determining phase orders from four adjacent coding phases.
- Correcting interference coding numbers and classifying/labeling connected regions for simplified decoding.
Main Results:
- Simulation results confirm the feasibility of the proposed phase demodulation method.
- Experimental validation demonstrates applicability to multiple and discontinuous objects.
- The method successfully generates accurate phase-order maps for 3D reconstruction.
Conclusions:
- The improved phase demodulation method offers enhanced accuracy and robustness.
- The technique is applicable to a wider range of 3D imaging scenarios, including complex objects.
- This advancement facilitates more reliable and detailed 3D reconstructions.
