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Author: theodore doiron

Displaying records 11 to 20 of 29 records.
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11. Deformation of Gauge Blocks
Published: 1/1/2002
Authors: Theodore D Doiron, Eric S Stanfield, Dennis S Everett
Abstract: When a force is exerted on any material, the material deforms.  Most of the time the effect is small and is neglected.  In the measurement of gauge blocks, where the uncertainty goal is stated in nanometers, the deformation is a very large ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823147

12. Video-Based Metrology
Published: 1/1/2002
Authors: Theodore D Doiron, John Richard Stoup, Marilyn N. Abrams, Tsai Hong Hong
Abstract: Video cameras are increasingly used to make dimensional measurements. Many of these systems use interpolation of the pixel data, with some systems claiming to find edges with precision of l/100 of a pixel. We have studied the response of single pixel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821741

13. Video-Based Metrology
Published: 1/1/2002
Authors: Theodore D Doiron, Marilyn N. Abrams, Tsai Hong Hong, Michael O Shneier
Abstract: With the rapid growth of video-based measurement and inspection systems, we would like to determine the extent to which industry needs calibration artifacts and standardized methods for video metrology. We hope to open a dialog among users for discus ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822450

14. Accuracy and Versatility of the NIST M48 Coordinate Measuring Machine
Published: 10/1/2001
Authors: John Richard Stoup, Theodore D Doiron
Abstract: The NIST Is continuing to develop the ability to perform accurate, traceable measurements on a wide range of artifacts using a very precise, error-mapped coordinate measuring machine (CMM). The NIST M48 CMM has promised accuracy and versatility for m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822439

15. A Careful Consideration of the Calibration Concept
Series: Journal of Research (NIST JRES)
Published: 3/1/2001
Authors: Steven David Phillips, William Tyler Estler, Theodore D Doiron, K Eberhardt, M Levenson
Abstract: This paper is a detailed discussion of the technical aspects of the calibration process with emphasis on the definition of the measurand, the conditions under which the calibration results are valid, and the subsequent use of the calibration results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823126

16. A Careful Consideration of the Calibration Concept
Published: 1/1/2001
Authors: Steven David Phillips, William Tyler Estler, Theodore D Doiron, K Eberhardt, M. Levenson
Abstract: This paper is a detailed discussion of the technical aspects of the calibration process with emphasis on the definition of the measurand, the conditions under which the calibration results are valid, and the subsequent use of the calibration results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824612

17. Video Based Metrologly
Published: 12/1/2000
Authors: Theodore D Doiron, Tsai Hong Hong, John Richard Stoup, Marilyn N. Abrams
Abstract: Video cameras are increasingly used to make dimensional measurements. Many of these systems use interpolation of the pixel data, with some systems claiming to find edges with precision of 1/100 of a pixel. We have studied the response of single pix ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821728

18. Dimensional Metrology of Millimeter- and Sub-millimeter-scale Components
Published: 10/1/2000
Authors: Theodore Vincent Vorburger, Jun-Feng Song, Joseph Fu, M Tundermann, Thomas B Renegar, Theodore D Doiron, N G Orji
Abstract: Decreasing sizes and tolerances of engineering components bring a demand for decreasing uncertainty in the dimensional measurements of these parts. Hence there is increasing need for measuring machines capable of performing dimensional and geometrica ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820999

19. Video Based Metrology
Published: 6/1/2000
Authors: Theodore D Doiron, John Richard Stoup, Tsai Hong Hong, Marilyn N. Abrams
Abstract: With the rapid growth of video-based measurement and inspection systems, we would like to determine the extent to which industry needs calibration artifacts and standardized methods for video metrology. We hope to open a dialog among users for discu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820667

20. Probing of Two-Dimensional Grid Patterns by Means of Camera-Based Image Processing
Published: 3/1/2000
Authors: Martin Schroeck, Theodore D Doiron
Abstract: Camera based probes and machine vision have found increased use in coordinate measuring machines over the past years and the calibration of artifacts for these probes has become an important task for NIST. Until recently these artifacts have been cal ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820977



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