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You searched on: Author: geraldine cheok Sorted by: title

Displaying records 61 to 70 of 90 records.
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61. Propagation of Error from Registration Parameters to Transformed Data
Series: Journal of Research (NIST JRES)
Published: 6/6/2016
Authors: Mili Shah, Marek Franaszek, Geraldine S Cheok
Abstract: Methods to register two sets of data have existed for quite some time. However, these sets of data are rarely error-free. Consequently, any parameters obtained from a registration method will be affected by the error in the sets of data. Moreover, if ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917764

62. Proposed E57.02 Range Measurement Performance Standard for Medium Range 3D Imaging Systems
Published: 7/26/2013
Authors: David MacKinnon, Luc Cournoyer, Kamel S Saidi, Geraldine S Cheok, Robert Bridges, Darin Ingimarson
Abstract: We present the proposed standard ASTM E57.02 "Test Method to Evaluate the Range Measurement Performance of 3D Imaging Systems in the Medium Range" (Work Item ASTM WK12373). The stated purpose of the standard is to provide metrics and procedures to ev ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913571

63. Proposed E57.02 Range Measurement Performance Standard for Medium Range 3D Imaging Systems
Published: 11/11/2013
Authors: David MacKinnon, Luc Cournoyer, Kamel S Saidi, Geraldine S Cheok, Robert Bridges, Darin Ingimarson
Abstract: We present the proposed standard ASTM E57.02 "Test Method to Evaluate the Range Measurement Performance of 3D Imaging Systems in the Medium Range" (Work Item ASTM WK12373). The stated purpose of the standard is to provide metrics and procedures to e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914811

64. 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

65. 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

66. 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

67. 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

68. 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

69. 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

70. 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



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