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Author: geraldine cheok
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Displaying records 51 to 60 of 82 records.
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51. Proceedings of IS&T/SPIE 21st Annual Symposium on Electronic Imaging 2009 - 3D Imaging Metrology Conference
Published: 11/5/2008
Authors: Geraldine S Cheok, Kamel Shawki Saidi, Marek Franaszek
Abstract: The ASTM E57.02 Test Methods Subcommittee is developing a test method to evaluate the ranging performance of a 3D imaging system. The test method will involve either measuring the distance between two targets or between an instrument and a target. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900883

52. Proceedings of the 2nd NIST LADAR Performance Evaluation Workshop March 15 - 16, 2005
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7266
Published: 10/1/2005
Author: Geraldine S Cheok
Abstract: In recent years, there has been a rapid growth of LADAR (laser detection and ranging) applications and a growing number of LADARs that are commercially available. As a result, there is a corresponding need to evaluate these instruments. This need p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860635

53. Proceedings of the 3rd NIST Workshop on the Performance Evaluation of 3D Imaging Systems, March 2-3, 2006
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7357
Published: 10/1/2006
Author: Geraldine S Cheok
Abstract: Two 3D Imaging Systems Performance Evaluation Workshops have been held at the National Institute of Standards and Technology (NIST) the first in 2003 and the second in 2005. These workshops were conducted in an effort to determine the need for sta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860682

54. Proceedings of the GSA 3D Imaging Workshop, February 28, 2011 (NIST TN 1699)
Series: Technical Note (NIST TN)
Report Number: 1699
Published: 12/9/2009
Authors: Geraldine S Cheok, Marek Franaszek, Kamel Shawki Saidi
Abstract: The General Services Administration (GSA) has been involved in 3D imaging since the early 2000s. Since 3D imaging was a relatively new technology at that time, GSA needed to develop and provide initial guidance to their project managers (PMs) on 3D i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908607

55. Proceedings of the LADAR Calibration Facility Workshop, June 12-13, 2003
Series: NIST Interagency/Internal Report (NISTIR)
Published: 10/1/2003
Author: Geraldine S Cheok
Abstract: The use and scope of LADAR applications continues to expand as the technology matures, but standard protocols or procedures for calibrating and testing of LADARs have yet to be developed. While selections of LADAR instruments are generally based on ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860533

56. Proposed E57.02 Range Measurement Performance Standard for Medium Range 3D Imaging Systems
Published: 7/26/2013
Authors: David MacKinnon, Luc Cournoyer, Kamel Shawki 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

57. Proposed E57.02 Range Measurement Performance Standard for Medium Range 3D Imaging Systems
Published: 11/11/2013
Authors: David MacKinnon, Luc Cournoyer, Kamel Shawki 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

58. 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 Shawki 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

59. 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

60. 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



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