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Updated: Mar 18, 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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Pre-calibration-free 3D shape measurement method based on fringe projection
Optics Express
|July 14, 2016
Summary
This study introduces a novel, pre-calibration-free 3D shape measurement technique using fringe projection. It achieves accurate 3D reconstruction by concurrently calibrating optical components and measuring shape, enhancing system flexibility.
Area of Science:
- Optics and Photonics
- Computer Vision
- Metrology
Background:
- Traditional 3D shape measurement often requires a separate, time-consuming calibration process.
- Maintaining calibration accuracy can be challenging due to environmental disturbances affecting optical geometry.
- Existing methods may lack flexibility for dynamic or field applications.
Purpose of the Study:
- To develop a pre-calibration-free 3D shape measurement method.
- To enable concurrent calibration and measurement for enhanced efficiency and flexibility.
- To achieve accurate 3D reconstruction despite potential optical geometry disturbances.
Main Methods:
- Utilizing phase-coded fringe images from dual camera viewpoints.
- Identifying and retrieving the rough 3D structure of homogenous control points.
- Employing a constrained non-linear least-squares optimization model for in situ optical geometry determination.
- Reconstructing the final 3D scene based on optimized parameters.
Main Results:
- Demonstrated accurate 3D shape measurement without prior calibration.
- Successfully reconstructed 3D scenes by concurrently determining optical geometry and measuring shape.
- Showcased the method's robustness against optical geometry disturbances.
- Verified the system's ultra-flexibility due to the absence of a preliminary calibration step.
Conclusions:
- The proposed fringe projection method offers a flexible and accurate solution for 3D shape measurement.
- Concurrent calibration and measurement significantly streamline the 3D reconstruction process.
- The technique is suitable for applications requiring high adaptability and robustness.
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