NIST logo

Publications Portal

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

Displaying records 21 to 30 of 80 records.
Resort by: Date / Title


21. Field Demonstration of Laser Scanning for Excavation Measurement
Published: 10/1/2000
Authors: Geraldine S Cheok, Robert R Lipman, Christoph Johann Witzgall, Javier Bernal, William C Stone
Abstract: The use of a scanning laser to measure terrain changes due to excavation at a construction site is described. The objective at this phase of the project is to develop the tools necessary to measure terrain changes in real-time. This paper focuses o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860744

22. Fitting Spheres to Range Data from 3D Imaging Systems
Published: 10/1/2009
Authors: Marek Franaszek, Geraldine S Cheok, Kamel Shawki Saidi, Christoph Johann Witzgall
Abstract: Two error functions used for nonlinear Least Squares (LS) fitting of spheres to range data from 3D imaging systems are discussed: orthogonal error function and directional error function. Both of the functions allow unrestricted gradient-based minimi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861541

23. Gauging the Repeatability of 3D Imaging Systems by Sphere Fitting
Published: 9/30/2009
Authors: Marek Franaszek, Geraldine S Cheok, Kamel Shawki Saidi
Abstract: Multiple scans of the same object acquired with 3D imaging system (e.g., laser scanner) in the same experimental conditions could provide valuable information about the instrument s performance (e.g., stability, existence of bias, measurement error). ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903444

24. Ground Truth and Benchmarks for Performance Evaluation
Published: 9/1/2003
Authors: A Takeucki, Michael O Shneier, Tsai Hong Hong, Tommy Chang, Christopher J. Scrapper Jr, Geraldine S Cheok
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823479

25. Guidelines for Accepting 2D Building Plans
Series: OTHER
Published: 12/10/2008
Author: Geraldine S Cheok
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901054

26. Guidelines for Accepting 2D Building Plans (NIST IR 7638)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7638
Published: 9/30/2009
Authors: Geraldine S Cheok, James J Filliben, Alan M. (Alan M.) Lytle
Abstract: The General Services Administration's (GSA) Public Buildings Services manages 1600 buildings totaling 180, 000, 000 square feet. GSA‰s ability to capture, validate, and report the spatial information of its building assets (e.g., dimensions, areas, a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903918

27. Hybrid Reinforced Precast Frame for Seismic Regions
Published: 3/1/1997
Authors: J Stanton, William C Stone, Geraldine S Cheok
Abstract: A precast, prestressed concrete framing system for resisting earthquake loads is described. The system uses both unbonded post-tensioned reinforcement and bonded bar reinforcement. Tests hve shown that its performance is equal or superior to that of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909451

28. Image-based 3D Mapping of Rebar Location for Automated Assessment of Safe Drilling Areas Prior to Placing Embedments in Concrete Bridge Decks
Published: 5/23/2012
Authors: Mani Golparvar-Fard, Behshad Ghadimi, Kamel Shawki Saidi, Geraldine S Cheok, Marek Franaszek, Robert R Lipman
Abstract: This paper presents a new image-based approach for 3D mapping the locations of the rebar and embedded components in a railway bridge deck prior to placement of concrete. Our approach enables practitioners to quickly and automatically identify where t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910289

29. LADAR Sensing Applications for Construction
Series: OTHER
Published: 6/1/2001
Authors: Geraldine S Cheok, William C Stone
Abstract: One potential breakthrough technology that stands to revolutionize construction surveying and status monitoring is known as laser range imaging. The device used to obtain the field data is known as a LADAR (Laser Distance and Ranging). With LADAR i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909353

30. Ladars for Construction Assessment and Update
Published: 1/1/2000
Authors: Geraldine S Cheok, William C Stone, Robert R Lipman, Christoph Johann Witzgall
Abstract: Work at the National Institute of Standards and Technology (NIST) on laser radar imaging of a construction site is described. The objective of the NIST research is to make measurements required in a construction project quicker and cheaper than curr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860226



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