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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 66, Iss. 11 — Nov. 1, 1976
  • pp: 1222–1236

Computer simulation study of image speckle patterns with relation to object surface profile

H. Fujii, J. Uozumi, and T. Asakura  »View Author Affiliations


JOSA, Vol. 66, Issue 11, pp. 1222-1236 (1976)
http://dx.doi.org/10.1364/JOSA.66.001222


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Abstract

The intensity distribution and contrast of image speckle patterns for various objects having different surface profiles are investigated on a computer as a function of the surface roughness properties of the objects and the point spread of an imaging system. The present computer simulation study for the objects having a random surface gives a theoretical background for the experimental results obtained by Fujii and Asakura. The same study for the objects having a periodic surface of two different profiles indicates that the contrast variation takes a complicated form as a function of the point spread of the imaging system, while the intensity distribution of images simply follows a periodic variation. It becomes clear from the simulation study that the maximum value of the image contrast variation is dependent mainly on the rms surface roughness of the objects but not on their surface profile.

© 1976 Optical Society of America

Citation
H. Fujii, J. Uozumi, and T. Asakura, "Computer simulation study of image speckle patterns with relation to object surface profile," J. Opt. Soc. Am. 66, 1222-1236 (1976)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-66-11-1222


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References

  1. J. C. Dainty (editor), Laser Speckle and Related Phenomena (Springer-Verlag, Berlin, 1975).
  2. H. Fujii and T. Asakura, "Effect of surface roughness on the statistical distribution of image speckle intensity," Opt. Commun. 11, 35–38 (1974).
  3. H. Fujii and T. Asakura, "Statistical properties of image speckle patterns in partially coherent light, " Nouv. Rev. Opt. 6, 5–14 (1975).
  4. H. Fujii and T. Asakura, "A contrast variation of image speckle intensity under illumination of partially coherent light," Opt. Comm. 12, 32–38 (1974).
  5. J. Ohtsubo and T. Asakura, "Statistical properties of speckle intensity variations in the diffraction field under illumination of coherent light," Opt. Commun. 14, 30–34 (1975).
  6. H. Fujii, T. Asakura, and Y. Shindo, "Measurements of surface roughness properties by means of laser speckle techniques," Opt. Commun. 16, 68–72 (1976).
  7. H. Fujii, T. Asakura, and Y. Shindo, "Measurement of surface roughness properties by using image speckle contrast," J. Opt. Soc. Am. 66, 1217–1222 (1976) (preceding paper).
  8. H. M. Pedersen, "Object–roughness dependence of partially devoloped speckle patterns in coherent light," Opt. Commun. 16, 63–67 (1976).
  9. J. Ohtsubo, H. Fujii and T. Asakura, "Surface roughness measurement by using speckle pattern," Jpn. J. Appl. Phys. Suppl. 14-1, 293–298 (1975).
  10. N. George and A. Jain, "Space and wavelength dependence of speckle intensity," Appl. Phys. 4, 201–212 (1974).
  11. N. George, A. Jain, and R. D. S. Melville, "Experiments on the space and wavelength dependence of speckle," Appl. Phys. 7, 157–169 (1975).
  12. N. George (private communication).

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