Prof. Burdette T. Beck Profile

Prof. Burdette T. Beck

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Publications (3)

Proceedings Article | 24 May 2013 Paper

Automated real-time search and analysis algorithms for a non-contact 3D profiling system

Mark Haynes, Chih-Hang John Wu, B. Terry Beck, Robert Peterman

Proceedings Volume 8791, 87911G (2013) https://doi.org/10.1117/12.2020744

KEYWORDS: Algorithm development, Clouds, Tolerancing, Control systems, Sensors, 3D metrology, Detection and tracking algorithms, 3D modeling, Laser development, Spatial filters

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The purpose of this research is to develop a new means of identifying and extracting geometrical feature statistics from a non-contact precision-measurement 3D profilometer. Autonomous algorithms have been developed to search through large-scale Cartesian point clouds to identify and extract geometrical features. These algorithms are developed with the intent of providing real-time production quality control of cold-rolled steel wires. The steel wires in question are prestressing steel reinforcement wires for concrete members. The geometry of the wire is critical in the performance of the overall concrete structure. For this research a custom 3D non-contact profilometry system has been developed that utilizes laser displacement sensors for submicron resolution surface profiling. Optimizations in the control and sensory system allow for data points to be collected at up to an approximate 400,000 points per second. In order to achieve geometrical feature extraction and tolerancing with this large volume of data, the algorithms employed are optimized for parsing large data quantities. The methods used provide a unique means of maintaining high resolution data of the surface profiles while keeping algorithm running times within practical bounds for industrial application. By a combination of regional sampling, iterative search, spatial filtering, frequency filtering, spatial clustering, and template matching a robust feature identification method has been developed. These algorithms provide an autonomous means of verifying tolerances in geometrical features. The key method of identifying the features is through a combination of downhill simplex and geometrical feature templates. By performing downhill simplex through several procedural programming layers of different search and filtering techniques, very specific geometrical features can be identified within the point cloud and analyzed for proper tolerancing. Being able to perform this quality control in real time provides significant opportunities in cost savings in both equipment protection and waste minimization.

Proceedings Article | 11 October 2012 Paper

A portable modular optical sensor capable of measuring complex multi-axis strain fields

Weixin Zhao, B. Terry Beck, Robert Peterman, Chih-Hang Wu

Proceedings Volume 8466, 84660Q (2012) https://doi.org/10.1117/12.929931

KEYWORDS: Sensors, Calibration, Bridges, Optical sensors, Photography, Speckle, Manufacturing, Multi-element lenses, Cameras, Prototyping

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Proceedings Article | 16 December 2004 Paper

A novel optical technique for measuring 5-axis surface movement

Weixin Zhao, John Wu, B. Terry Beck

Proceedings Volume 5606, (2004) https://doi.org/10.1117/12.571463

KEYWORDS: Speckle, Motion measurement, Sensors, Calibration, Photography, Speckle pattern, Imaging systems, Collimation, Image restoration, Laser optics

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