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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 4 — Feb. 1, 2014
  • pp: 727–730

Real-time edge detection by cyclic-path polarization interferometer

Sonali Chakraborty and K. Bhattacharya  »View Author Affiliations

Applied Optics, Vol. 53, Issue 4, pp. 727-730 (2014)

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In a triangular path cyclic interferometer employing a polarizing beam splitter (PBS), the two counterpropagating beams are orthogonally polarized. A sample placed almost equidistant from the PBS is imaged by a lens placed in the path of the emerging beams so that two defocused images of the sample are recorded on a CCD. Using a linear polarizer in the path of the orthogonally polarized imaging beams, it is possible to achieve amplitude subtraction between the two images, resulting in an edge-enhanced image of the sample. The proposed real-time edge-enhancement technique is experimentally demonstrated.

© 2014 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(100.3175) Image processing : Interferometric imaging

ToC Category:
Image Processing

Original Manuscript: December 24, 2013
Revised Manuscript: July 29, 2013
Manuscript Accepted: August 12, 2013
Published: January 30, 2014

Sonali Chakraborty and K. Bhattacharya, "Real-time edge detection by cyclic-path polarization interferometer," Appl. Opt. 53, 727-730 (2014)

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  1. J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, 1996), p. 218.
  2. R. W. Lewis, “Real-time coherent optical edge enhancement,” Appl. Opt. 17, 161–162 (1978). [CrossRef]
  3. H. Liu, J. Xu, and L. L. Fajardo, “Optical processing architecture for analog and digital radiology,” Med. Phys. 26, 648–652 (1999). [CrossRef]
  4. A. Panchangam, K. V. L. N. Sastry, D. V. G. L. N. Rao, B. S. DeCristofano, B. R. Kimball, and M. Nakashima, “Processing of medical images using real-time optical Fourier processing,” Med. Phys. 28, 22–28 (2001). [CrossRef]
  5. M. Storrs, D. J. Mehrl, and J. F. Walkup, “Programmable spatial filtering with bacteriorhodopsin,” Appl. Opt. 35, 4632–4636 (1996). [CrossRef]
  6. C. S. Yelleswarapu, S.-R. Kothapalli, and D. V. G. L. N. Rao, “Optical Fourier techniques for medical image processing and phase contrast imaging,” Opt. Commun. 281, 1876–1888 (2008). [CrossRef]
  7. F. T. Yu, S. Jutamulia, and X. L. Huang, “Experimental application of low-cost liquid crystal TV to white light optical image processing,” Appl. Opt. 25, 3324–3326 (1986). [CrossRef]
  8. T. K. Acharya, K. Bhattacharya, and A. Ghosh, “High frequency enhancement using a birefringent-based spatial filter,” J. Mod. Opt. 41, 979–986 (1994). [CrossRef]
  9. A. Montes-Perez, C. Meneses-Fabian, and G. Rodriguez-Zurita, “Isotropic edge-enhancement by the Hilbert-transform in optical tomography of phase objects,” Opt. Express 19, 5350–5356 (2011). [CrossRef]
  10. J. F. Ebersole, “Optical image subtraction,” Opt. Eng. 14, 145436 (1975). [CrossRef]
  11. A. Ghosh and A. K. Chakraborty, “High frequency enhancement using birefringent lens,” Opt. Commun. 40, 329–331 (1982). [CrossRef]
  12. J. A. Ferrari and J. L. Flores, “Nondirectional edge-enhancement by contrast reverted low-pass Fourier filtering,” Appl. Opt. 49, 3291–3296 (2010). [CrossRef]
  13. X. Lin, J. Ohtsubo, and T. Takemori, “Real-time optical image subtraction and edge enhancement using ferroelectric liquid-crystal devices based on speckle modulation,” Appl. Opt. 35, 3148–3154 (1996). [CrossRef]

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