计量学
投影机
三角测量
光学
计算机科学
结构光
散斑噪声
计算机视觉
斑点图案
校准
物理
结构光三维扫描仪
人工智能
投影(关系代数)
摄像机切除
数学
算法
量子力学
几何学
扫描仪
作者
Andreas Stark,Eugene Wong,Daniel J. Weigel,Holger Babovsky,R. Kowarschik
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2018-12-13
卷期号:57 (12): 1-1
被引量:8
标识
DOI:10.1117/1.oe.57.12.120501
摘要
Triangulation-based three-dimensional (3-D) optical metrology utilizing structured illumination requires the projector and camera to be geometrically calibrated. The projection of laser speckle structures in temporal correlation-based methods has been found to be useful for high-speed 3-D measurement. However, it requires the use of a stereo-camera configuration as speckle projection does not utilize conventional projection optics. Previously, we have shown a model-less method to calibrate these unconventional projection systems. This re-enabled single-camera setups where stereo systems used to be required. Due to the random nature of speckle production, speckle structures were not suitable as a set of repeatable illumination structures is needed for the model-less calibration method to succeed. A projection apparatus is proposed, which enables the production of a repeatable set of speckle structures. This device is then utilized in a single-camera optical metrology 3-D measurement system.
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