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30 May 2022 High-accuracy 3D scanning system using digital fringe projection for forensic science
Jae-Sang Hyun
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Proceedings Volume PC12098, Dimensional Optical Metrology and Inspection for Practical Applications XI; PC1209801 (2022) https://doi.org/10.1117/12.2623420
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States
Abstract
To obtain high-quality 3D shape for forensic science, we developed a new automated 3D scanning system based on digital fringe projection (DFP) techniques. The system reconstructs two million 3D point cloud data pixel by pixel with color and visualizes the 3D result on the screen within half a second. To capture objects in an environment exposed to low signal-to-noise ratio (SNR), we have applied high-dynamic-range imaging algorithms. With two different capturing modes, users can observe a specific region in more detail through the built-in graphic user interface (GUI): high resolution (400 dpi) for a small field of view or low resolution (140 dpi) for a large field of view. Also, users can easily save the 3D result into the portable storage and compare the data with others in the system.
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Jae-Sang Hyun "High-accuracy 3D scanning system using digital fringe projection for forensic science", Proc. SPIE PC12098, Dimensional Optical Metrology and Inspection for Practical Applications XI, PC1209801 (30 May 2022); https://doi.org/10.1117/12.2623420
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KEYWORDS
3D scanning
Forensic science
Sensors
3D displays
3D modeling
Signal to noise ratio
Visualization
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