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Motion-induced phase shift for dynamic structured light measurement.
Optics Letters
|November 15, 2024
Summary
This study introduces a novel motion-induced phase shift (MIPS) technique for dynamic 3D shape measurement. The MIPS method accurately captures 3D topography of moving objects, overcoming limitations of traditional static measurement approaches.
Area of Science:
- Optics and Photonics
- Metrology
- Computer Vision
Background:
- Structured light 3D shape measurement is vital in semiconductor inspection, manufacturing, and biomedical imaging.
- Traditional methods require static objects, limiting dynamic measurement capabilities.
- Existing techniques struggle with inaccurate phase-shifting information.
Purpose of the Study:
- To develop a dynamic 3D shape measurement technique using structured light.
- To enable precise 3D topography acquisition of moving objects.
- To overcome the limitations of static requirements in conventional methods.
Main Methods:
- Proposed a novel motion-induced phase shift (MIPS) method for structured light 3D measurement.
- Utilized object motion to induce phase shifts by distorting fringe patterns.
- Developed algorithms to determine phase information accurately despite motion.
Main Results:
- The MIPS method enables dynamic 3D shape measurement.
- Accurate 3D topography acquisition of objects moving up to 100 mm/s.
- Achieved a relative discrepancy of less than 0.23% in experimental validation.
Conclusions:
- The MIPS technique offers a robust solution for dynamic 3D shape measurement.
- This method enhances the adaptability of structured light for real-time applications.
- MIPS provides high-precision 3D measurements for dynamic industrial and scientific scenarios.
