Zobrazeno 1 - 10
of 17
pro vyhledávání: '"John T. Atkinson"'
Publikováno v:
Optics and Lasers in Engineering. 27:355-368
If structured light consisting of parallel stripes, or fringes, is projected onto a surface, then the surface acts as a phase modulator, with the amount of modulation at any point depending upon the height of the surface at that point. In recent year
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dd80a8bf9715c5032b3035366b0a7f0
https://doi.org/10.1016/s0143-8166(96)00035-8
https://doi.org/10.1016/s0143-8166(96)00035-8
Publikováno v:
Optics and Lasers in Engineering. 27:247-257
Effects on the absolute moire contouring systems from using different period and profile gratings and rotating angles are described in this paper. It was found that by choosing a different period of the grating or the rotating angle, different resolu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efad63b4f60bcb0cad41eb4c3d391275
https://doi.org/10.1016/s0143-8166(96)00028-0
https://doi.org/10.1016/s0143-8166(96)00028-0
Publikováno v:
Optics and Lasers in Engineering. 23:245-257
This paper presents a novel application of frequency shifting in the Fourier transform fringe analysis technique applied to surface shape measurement. In recent years little use has been made of frequency shifting, although it was a feature of the me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27f9389c88c4edaa5d9584bc5d169109
https://doi.org/10.1016/0143-8166(95)00005-9
https://doi.org/10.1016/0143-8166(95)00005-9
Publikováno v:
Applied optics. 35(35)
In the shadow-moire system, the period of the grating is varied by rotation of the grating, so the phase of the moire pattern is changed as well. By the selection of suitable rotation angles, three images at different positions of the grating are acq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e72b9e956a9062eccf7617076ca15632
https://pubmed.ncbi.nlm.nih.gov/21151298
https://pubmed.ncbi.nlm.nih.gov/21151298
Publikováno v:
Fifth International Conference on Image Processing and its Applications.
A common fault on glazed ceramic tableware is the surface glaze fault known as cut-glaze. It is proposed to use an image capture technique involving a structured light source to emphasise these faults. This method gives roughly circular patterns arou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd200a0c6322bced7920a627142b1688
https://doi.org/10.1049/cp:19950695
https://doi.org/10.1049/cp:19950695
Publikováno v:
Interferometry '94: New Techniques and Analysis in Optical Measurements.
An instrument capable of highly accurate, non-contact range measurement has been developed, which is based upon the principle of projected rotating fringes. More usually known as dynamic fringe projection, it is this technique which is exploited in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af0c889e031187e6e17c9a7621d3ad73
https://doi.org/10.1117/12.195902
https://doi.org/10.1117/12.195902
Autor:
John T. Atkinson, David J. Search, Francis Lilley, Jeremy David Pearson, Shirish P. Kshirsagar, Clifford Allan Hobson, Anthony J. Goodall, David R. Burton
Publikováno v:
Interferometry '94: New Techniques and Analysis in Optical Measurements.
This paper describes research into a non-contact system for the measurement of components and solder on printed circuit boards (PCBs). The objective of the system is the inspection of the PCB to identify faults in the manufacturing process. Two appro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7369b8e61cb990c8ef7d72ee3ff7ea5
https://doi.org/10.1117/12.195915
https://doi.org/10.1117/12.195915
Autor:
Michael J. Lalor, John T. Atkinson
Publikováno v:
Interferometry '94: New Techniques and Analysis in Optical Measurements.
The absolute contouring of diffuse objects is considered. Variable index holographic contouring is presented in terms of a thought experiment. Absolute moire contouring is discussed in some detail. Experimental work is presented. This work agrees wel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa3141d321a1f84965b20e3fa013b551
https://doi.org/10.1117/12.195912
https://doi.org/10.1117/12.195912
Publikováno v:
SPIE Proceedings.
This paper describes research into a non-contact system for the inspection of fine pitch electronic components on manufactured electronic assemblies. A far-field diffraction pattern from the leads of a tape automated bonding component is captured and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9310166d0def8e12928f9bdfdfa4ad30
https://doi.org/10.1117/12.196082
https://doi.org/10.1117/12.196082
Autor:
David J. Search, John T. Atkinson, Clifford Allan Hobson, Francis Lilley, David R. Burton, Shirish P. Kshirsagar, Jeremy David Pearson
Publikováno v:
SPIE Proceedings.
This paper describes research into a noncontact system for the measurement of components and solder on printed circuit boards (PCBs). The objective of the system is the inspection of the PCB to identify faults in the manufacturing process. A fringe p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2686cb841aea16b98e136e772c786a34
https://doi.org/10.1117/12.171213
https://doi.org/10.1117/12.171213