IJMTES – DATA RECOVERING FROM DIGITAL SPECKLE PATTERN IN IMAGE PROCESSING

Journal Title : International Journal of Modern Trends in Engineering and Science

Author’s Name : Sumithra.D | R.Gomathi  unnamed

Volume 03 Issue 07 2016

ISSN no:  2348-3121

Page no: 66-70

Abstract – Speckle patterns are generally produced by light scattered from an optically rough surface when illuminated by coherent light. Fast Fourier transform algorithm for carrying out this task. It has been shown that the fringe projection can be applied for the measurement of out-of-plane deformation. In this project is a method for recovering data from a simple portable Digital Speckle Pattern Interferometer. In speckle interferometry, the object is illuminated with a coherent light source and the image of the object is recorded before and after the deformation/ displacement. The main task was picking out usable interferograms from large amount of frames. In this paper  to developed a PC-based method based on jointly analysis of spectral content and fringe image sharpness as selection rules. The selected frames  are reutilized for off-line processing by using an approach based on Hilbert Transform and Phase Unwrapping via Max flow (PUMA) algorithm.  It is obtained a collection of displacement-maps, that allowed for evaluating the whole structure deformations, caused by environmental thermo-hygrometric fluctuations. Our preliminary results demonstrated the system as an useful tool for utilization in a noisy location. 

Keywords— Data Recovery, Image Processing, Speckle Pattern 

Reference

  1. Sutton MA, Wolters WJ, Peters WH, Ranson WF, McNeill SR , “Determination of displacements using an improved digital correlation method”,Image Vis Comput 13:33–139,1983.
  2. Chu TC, Ranson WF, Sutton MA, Peters WH, “Applications of digital-image-correlation techniques to experimental mechanics. Exp.Mech 253:232–244,1985.
  3. J. C. Dainty. “The statistics of speckle pattern”,In E. Wolf, editor, Progress in Optics, pages 1- 45. Elsevier, Amsterdam, 1976.
  4. J. D. Briers., “Surface roughness evaluation”, In R. S. Sirohi, editor, Speckle Metrology, pp. 373- 426. Marcel Dekker, New York, 1993.
  5.  J. C. Dainty “Laser Speckle and Related Phenomena”, Springer- Verlag,Berlin, 2nd ed.1984.
  6.  Sirohi, R.S., Tay, C.J., Shang, H.M., Boo, W.P., “Non destructive assessment of thinning of plates using digital ,shearography. Opt.Eng. 38(9), 1582–1585, 1999.
  7. Synnergren P and Sjodahl M. Opt. Lasers Eng. 31 425–43,1999.
  8. Chiang F P. Opt. Eng. 42 1288–92, 2003.
  9. Barrientos B, Mart´ınez-Celorio R A, L´opez L M, Dirckx L L and Cywiak M.Optik 115, 248–52, 2004.
  10. Adrian R J. Exp. Fluids 39, 159–69, 2005.
  11. Tay C J, Quan C, Wu T and Huang Y H. Opt. Eng.43 1152–9,2004
  12. M. Melozzi, L. Pezzati, and A. Mazzoni, “Vibration-insensitive nter-ferometer for on-line measurements,”Appl. Opt., vol. 34, no. 25, pp. 5595–5601, 1995.
  13. W.OstenandW.Juptner, Digital Processing of Fringe Patterns. Hand-book of Optical Metrology,P.K.Rastogi, Ed. Boston,MA,USA: Artech House, 1997.
  14. D. Albrechta et al., “Diagnostic of the conservation state of antique Italian paintings on panel carried out at the Laboratorio di Restauro dell’Opificio delle Pietre Dure in Florence, Italy, with DSPI-based portableinstrumentation,”J. Cult. Herit.,vol.1,pp.S331–S335,2000.
  15. E.Boaglioet al.,“DevelopmentofaportableDSPIsystemfortheanal-ysis in situ of mural paintings,” inProc. Speckle 2012,Vigo,Spain, 2012.
  16. K. D. Hinsch, K. Zehnder, H. Joost, and G. Gülker, “Monitoring detaching murals in the Convent of Müstair (Switzerland) by optical metrology,”J. Cult. Herit., vol. 10, pp. 94–105, 2009.
  17. G. Gulker, K. Hinsch, C. Holscher, A. Kramer, and H. Neunaber, “In-situ application of electronic speckle pattern interferometry (ESPI) in the investigation of stone decay,” inProc. SPIE /Laser Interferometry Conf., San Diego, CA, USA, 1989, vol. 1162.
  18. D. Paoletti and G. S. Spagnolo, “The potential of portable TV holog-raphy for examining frescoes in situ,” Stud. Conserv., vol. 40, pp. 127–132, 1995.
  19. G.S.Spagnolo,D.Ambrosini,andD.Paoletti,“AnNDTelectro-optic systemformosaicsinvestigations,”J. Cult. Herit.,vol.4,pp.369–376, 2003.
  20. D.Paoletti,G.S.Spagnolo,M.Facchini,andP.Zanetta,“Artworkdi-agnosticswithfiber- pticdigitalspecklepatterninterferometry,”Appl. Opt., vol. 32, no. 31, pp. 6236–6241, 1993.
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