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Updated: Nov 5, 2025
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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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Photometric constraint for absolute phase unwrapping from single-frequency fringe patterns.
Optics Express
|May 14, 2021
Summary
This study introduces a new photometric constraint (PC) for absolute phase unwrapping in fringe projection profilometry. This method simplifies 3D reconstruction using single-frequency patterns without extra cameras.
Area of Science:
- Optics and Photonics
- Computer Vision
- Metrology
Background:
- Absolute phase unwrapping is crucial for 3D shape reconstruction using fringe projection profilometry.
- Existing methods like spatial smoothness constraint (SSC) and viewpoint consistency constraint (VCC) have limitations, including phase ambiguity and system complexity.
Purpose of the Study:
- To develop a novel constraint for absolute phase unwrapping using single-frequency fringe patterns.
- To overcome the limitations of existing methods by leveraging photometric information.
Main Methods:
- A new photometric constraint (PC) was developed, utilizing image intensity information.
- The PC was applied to absolute phase unwrapping with single-frequency fringe patterns in a traditional camera-projector setup.
Main Results:
- The proposed photometric constraint (PC) effectively addresses phase ambiguity in absolute phase unwrapping.
- Experimental results demonstrate comparable performance to state-of-the-art methods.
Conclusions:
- The photometric constraint (PC) offers a promising solution for simplified and cost-effective 3D shape reconstruction.
- This method eliminates the need for additional cameras or complex multi-view systems.
