Abstract

Speckle fringe patterns of ESPI are full of high-level speckle noise and normally are processed by phase shifting methods that require multi speckle fringe patterns. We propose a novel method to generate a speckle-noise-free fringe pattern from a single speckle fringe pattern and to extract the phase field from the new pattern. With the new method, the correlation between two speckle patterns is performed only within contour windows instead of rectangular windows and this contoured correlation results in a smooth, normalized fringe pattern without speckle noise. The new ESPI fringe patterns are speckle-noise-free and of comparable quality to that of moiré and hologram, which is unimaginable with traditional ESPI methods. In addition to the smoothness, the resultant fringe pattern is normalized automatically so that the full phase field can be extracted from this single fringe pattern by the single-image phase-shifting method.

© 2004 Optical Society of America

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References

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  1. K. Creath, �??Speckle: Signal or Noise?�?? in Proc. FRINGE 93, W. Jueptner and W. Osten, ed. (Bremen, 1993), pp. 97-102.
  2. G. Kaufmann, A. Davila and D. Kerr, �??Interview-Smoothing of speckle interferometry fringe-patterns,�?? Optical Testing Digest, Vol. 2(4), 1997.
  3. Qifeng Yu, X. Sun and X. Liu, �??Removing speckle noise and skeleton extraction from a single speckle fringe pattern,�?? Opt. Eng. 42, 68-74 (2003).
    [CrossRef]
  4. Douglas R. Schmitt and R. W. Hunt, �??Optimization of fringe pattern calculation with direct correlations in speckle interferometry,�?? Appl. Opt. 36, 8848-8857(1997).
  5. Qifeng Yu, Xiaolin Liu, Xiangyi Sun and Zhihui Lei, �??Double-image and single-image phase-shifting methods for phase measurement,�?? Optik 109, 89-95(1998).
  6. D. Kerr, F. Mendoza Santoyo and J. R. Tyrer, �??Extraction of phase data from electronic speckle pattern interferometric fringes using a single-phase-step method: a novel approach,�?? J. Opt. Soc. Am. A 7, 820- 826(1990).
  7. Qifeng Yu, K. Andresen, W. Osten and W. Jueptner, �??Noise-free normalized fringe patterns and local pixel transforms for strain extraction,�?? Appl. Opt. 35, 3783-90(1996).
  8. Yuming He, �??Digital shearing speckle corelation fringes pattern formed by using linear correlation calculating method,�?? Acta Photonica Sinica, 24, 13-17(1995).
  9. Qifeng Yu, X. Sun and X. Liu, �??Spin filtering with curve windows for interferometric fringes,�?? Appl. Opt. 41, 2650-54 (2002).
  10. Qifeng Yu, X. Liu and X. Sun, �??Generalized Spin filtering and an improved derivative-sign binary image method for the extraction of fringe skeletons,�?? Appl. Opt. 37, 4504-9 (1998).
  11. K. Andresen and Qifeng Yu, �??Robust phase unwrapping by spin filtering combined with a phase direction map,�?? Optik 94, 145-9 (1993).

Acta Photonica Sinica (1)

Yuming He, �??Digital shearing speckle corelation fringes pattern formed by using linear correlation calculating method,�?? Acta Photonica Sinica, 24, 13-17(1995).

Appl. Opt. (4)

FRINGE (1)

K. Creath, �??Speckle: Signal or Noise?�?? in Proc. FRINGE 93, W. Jueptner and W. Osten, ed. (Bremen, 1993), pp. 97-102.

J. Opt. Soc. Am. A (1)

Opt. Eng. (1)

Qifeng Yu, X. Sun and X. Liu, �??Removing speckle noise and skeleton extraction from a single speckle fringe pattern,�?? Opt. Eng. 42, 68-74 (2003).
[CrossRef]

Optical Testing Digest (1)

G. Kaufmann, A. Davila and D. Kerr, �??Interview-Smoothing of speckle interferometry fringe-patterns,�?? Optical Testing Digest, Vol. 2(4), 1997.

Optik (2)

Qifeng Yu, Xiaolin Liu, Xiangyi Sun and Zhihui Lei, �??Double-image and single-image phase-shifting methods for phase measurement,�?? Optik 109, 89-95(1998).

K. Andresen and Qifeng Yu, �??Robust phase unwrapping by spin filtering combined with a phase direction map,�?? Optik 94, 145-9 (1993).

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