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Updated: Jun 16, 2025
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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Published on: December 3, 2013
15.6K
Large-scale-adaptive fringe projection 3D measurement.
Optics Letters
|August 15, 2024
Summary
This study introduces a new calibration-free 3D measurement method for large scenes using fringe projection profilometry (FPP). The system integrates binocular and wide field-of-view vision to achieve accurate, large-scale 3D reconstruction without stitching errors.
Area of Science:
- Optical Metrology
- Computer Vision
- 3D Reconstruction
Background:
- Fringe projection profilometry (FPP) is challenged by calibration complexity and stitching errors in large-scale 3D measurements.
- Existing methods struggle with scene sizes from tens to hundreds of meters, limiting practical applications.
Purpose of the Study:
- To develop a calibration-free 3D measurement method for arbitrarily large-scale scenes.
- To overcome the limitations of traditional FPP regarding calibration and stitching error accumulation.
Main Methods:
- Integration of a binocular FPP scanner with a wide field-of-view vision system.
- Construction of global benchmarks to unify local 3D scanning and global 3D stitching.
- Application of a posterior global optimization model for simultaneous reconstruction and pose determination.
Main Results:
- Achieved 3D measurements with 0.25 mm accuracy and 0.5 mm density over 50-m-long scenes.
- Eliminated large-scale pre-calibration requirements and stitching error accumulation.
- Overcame system structural instability during moving measurements.
Conclusions:
- The proposed integrated vision system enables accurate and stable large-scale 3D measurements without calibration.
- The method is adaptable to arbitrarily large scenes, significantly advancing FPP applications.
