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Displaying records 61 to 70 of 86 records.
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61. Real-Time Monitoring: Augmenting Building Information Modeling with 3D Imaging Data to Control Drilling for Embeds into Reinforced Concrete Bridge Decks
Published: 9/16/2013
Authors: Manu Akula, Robert R Lipman, Marek Franaszek, Geraldine S Cheok, Kamel S Saidi, Vineet Kamat
Abstract: A major contributing factor attributed to accidents in construction is the lack of hazard recognition due to limited visibility that characterizes construction projects. Real-time monitoring systems that utilize context aware computing techniques fac ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911737

62. Reconstructing Images of Bar Codes for Construction Site Object Recognition
Published: 9/1/2002
Authors: David E. Gilsinn, Geraldine S Cheok, Dianne M O'Leary
Abstract: This paper discusses a general approach to reconstructing ground truth intensity images of bar codes that have been distorted by LADARoptics. The first part of this paper describes the experimental data collection of several bar code images along w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150859

63. Recovering Circles and Spheres from Point Data
Published: 7/1/2006
Authors: Christoph Johann Witzgall, Geraldine S Cheok, Anthony J Kearsley
Abstract: Methods for fitting circles and spheres to point sets are discussed. LADAR (LAser Detection And Ranging) scanners, in particular, are capable of generating "point clouds" containing the x, y, z coordinates of up to several millions of points reflecti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50826

64. Recovering Spheres from 3D Point Data
Published: 4/1/2006
Authors: Christoph Johann Witzgall, Geraldine S Cheok, Anthony J Kearsley
Abstract: The National Institute of Standards and Technology is involved in developing standard protocols for the performance evaluation of 3D imaging systems, which include laser scanners and LADARs (LAser Detection and Ranging). A LADAR is an optical device ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50949

65. Registering 3D Point Clouds: An Experimental Evaluation
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6743
Published: 5/1/2001
Authors: Christoph Johann Witzgall, Geraldine S Cheok
Abstract: Four separate laser scans of a wooden box, taken from different vantage points, were examined in a laboratory setting. Visual and numerical registration methods, aimed at aligning the individual scan data with respect to a common frame, were explore ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860351

66. Safe Control of Manufacturing Vehicles Research Towards Standard Test Methods
Published: 6/28/2012
Authors: Roger V Bostelman, William P Shackleford, Geraldine S Cheok, Kamel S Saidi
Abstract: The National Institute of Standards and Technology's Intelligent Systems Division has been researching several areas leading to safe control of manufacturing vehicles to improve AGV safety standards. The research areas include: - Automated guided ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911407

67. Seismic Performance of Masonry Walls With Bed Joint Reinforcement
Published: 7/1/1998
Authors: A E Schultz, R S Hutchinson, Geraldine S Cheok
Abstract: In-plane cyclic load tests of partially grouted concrete masonry shear walls with bed joint reinforcement are presented. Specimen design and construction, and simulated seismic testing procedures, are summarized. Lateral force resistance mechanisms a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860131

68. Simplified Design Procedure for Hybrid Precast Concrete Connections
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5765
Published: 2/1/1996
Authors: Geraldine S Cheok, William C Stone, S. D. Nakaki
Abstract: A rational design procedure is presented to compute the probable moment, the nominal moment, and the story drift capacities of a hybrid precast moment-resisting beam-to-column connection. The hybrid connections consist of mild steel which is used to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909473

69. Some Issues Relating to Performance Evaluation of LADARs
Published: 9/16/2003
Authors: Geraldine S Cheok, William C Stone, Christoph Johann Witzgall
Abstract: The use and scope of LADAR applications continues to expand as the technology matures. This growth is reflected in NIST's experience with research into the applications of LADARs for construction, manufacturing, and autonomous vehicle navigation. How ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909352

70. Standard Test Procedures and Metrics Development for Automated Guided Vehicle Safety Standards
Published: 5/23/2012
Authors: Roger V Bostelman, William P Shackleford, Geraldine S Cheok, Richard J Norcross
Abstract: The National Institute of Standards and Technology's Intelligent Systems Division has been researching automated guided vehicle (AGV) control based on advanced two-dimensional (2D) imaging sensors that detect dynamic, standard test pieces represent ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910774



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