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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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High-Accuracy 3-D Sensor for Rivet Inspection Using Fringe Projection Profilometry with Texture Constraint.
Yunfan Wang1, Huijie Zhao1, Xudong Li1
1Key Laboratory of Precision Opto-Mechatronics Technology, Ministry of Education, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China.
Sensors (Basel, Switzerland)
|December 23, 2020
Summary
This study introduces a 3-D sensor for inspecting riveted workpieces using fringe projection profilometry (FPP) and texture constraints. The new method significantly improves diameter measurement accuracy for automated, high-precision inspection of manufactured parts.
Area of Science:
- Manufacturing Engineering
- Optical Metrology
- Non-Destructive Testing
Background:
- Riveted workpieces are crucial in manufacturing, but current inspection methods struggle with automated, high-accuracy dimensional measurements.
- Existing non-destructive testing techniques often lack the precision required for detailed dimensional analysis of riveted components.
Purpose of the Study:
- To develop an advanced 3-D sensor for precise, automated inspection of riveted workpieces.
- To overcome limitations in current non-destructive testing for dimensional accuracy in manufacturing.
Main Methods:
- Utilized fringe projection profilometry (FPP) with a texture constraint for 3-D sensing.
- Employed a multi-intensity high dynamic range (HDR) FPP method to handle varying metal surface reflectance.
- Integrated 2-D contours with 3-D FPP data and fused HDR texture for artifact compensation and precise edge refinement.
Main Results:
- Successfully acquired dense 3-D data of riveted metal workpieces with high accuracy.
- Achieved significant improvement in artifact compensation around stepwise edges using fused HDR texture.
- Demonstrated enhanced rivet segmentation and diameter measurement capabilities.
Conclusions:
- The developed 3-D sensor offers a robust solution for accurate dimensional inspection of riveted components.
- The novel FPP approach with texture constraints improves diameter measurement accuracy by 50% compared to traditional FPP methods.
- This technology enables more precise automated quality control in manufacturing processes involving riveted parts.
