NIST logo

Publications Portal

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

Displaying records 31 to 40 of 82 records.
Resort by: Date / Title


31. Evaluating a Ranging Protocol For 3D Imaging Systems
Published: 9/19/2007
Authors: Geraldine S Cheok, Kamel Shawki Saidi, Alan M. (Alan M.) Lytle
Abstract: In 2006, the ASTM E57 committee was established to develop standards for 3D imaging systems. A 3D imaging system is a non-contact instrument that is used to measure the range and bearing to and/or the 3D coordinates of points on an object or within ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860713

32. Using LADAR to Characterize the 3-D Shape of Aggregates: Preliminary Results.
Published: 12/1/2006
Authors: Edward Joseph Garboczi, Geraldine S Cheok, William C Stone
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101172

33. 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

34. 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

35. 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

36. Using LADAR to characterize the 3-D shape of aggregates: Preliminary results
Published: 3/1/2006
Authors: Edward Joseph Garboczi, Geraldine S Cheok, William C Stone
Abstract: In previous publications, we have shown how using x-ray computed tomography to obtain the raw 3-D data for the coordinates of the surface, and then converting this raw data into an analytical function for the surface via an expansion in spherical har ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860569

37. Status of the NIST 3D Imaging System Performance Evaluation Facility
Published: 1/1/2006
Authors: Geraldine S Cheok, Alan M. (Alan M.) Lytle, Kamel Shawki Saidi
Abstract: This paper will present the status of the indoor artifact-based Performance Evaluation Facility at the National Institute of Standards and Technology (NIST) for 3D imaging systems. This facility will be used to develop test protocols and performance ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860649

38. Construction Object Identification from LADAR Scans: An Experimental Study Using I-Beams
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7286
Published: 12/15/2005
Authors: David E. Gilsinn, Geraldine S Cheok, Christoph Johann Witzgall, Alan M. (Alan M.) Lytle
Abstract: Laser Scanning devices (LADAR for Laser Detection and Ranging) are used in construction projects to capture as-built data. They can rapidly generate large unstructured point clouds. This study describes an experiment in which an I-beam on a concrete ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50817

39. NIST LADAR Performance Evaluation Workshop, 2nd Proceedings. March 15-16, 2005.
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7266
Published: 12/1/2005
Author: Geraldine S Cheok
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101053

40. NIST LADAR Performance Evaluation Workshop, 2nd Proceedings. March 15-16, 2005.
Published: 12/1/2005
Author: Geraldine S Cheok
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101242



Search NIST-wide:


(Search abstract and keywords)


Last Name:
First Name:







Special Publications:

Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series