OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 10, Iss. 12 — Dec. 1, 1971
  • pp: 2734–2738

Moiré Contour-Sum Contour-Difference, and Vibration Analysis of Arbitrary Objects

J. Der Hovanesian and Y. Y. Hung  »View Author Affiliations


Applied Optics, Vol. 10, Issue 12, pp. 2734-2738 (1971)
http://dx.doi.org/10.1364/AO.10.002734


View Full Text Article

Enhanced HTML    Acrobat PDF (956 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A grid is projected onto an object and focused into a viewing camera which is offset from the angle of illumination. When the image is superimposed by double exposure or by filtering with the image of another object, contour-difference moiré fringes appear. By the use of two offset projectors, measurements of contour sums or contour doubling may be accomplished. The properties, limitations, sensitivity, and procedures are analyzed and discussed. The method lends itself to image enhancement and is extended to the study of vibration analysis in real time. In the latter application, time-average moiré fringes appear according to the zeroth-order Bessel function, which contains the modal amplitude function in its argument.

© 1971 Optical Society of America

History
Original Manuscript: May 28, 1971
Published: December 1, 1971

Citation
J. Der Hovanesian and Y. Y. Hung, "Moiré Contour-Sum Contour-Difference, and Vibration Analysis of Arbitrary Objects," Appl. Opt. 10, 2734-2738 (1971)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-10-12-2734


Sort:  Author  |  Year  |  Journal  |  Reset  

References

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited