A method for enhancing contrast of reconstructed particle image

LI Zhi-bin; ZHENG Gang; ZHANG Li-xin

doi:10.3969/j.issn.1001-3806.2010.01.032

LASER TECHNOLOGY > 2010 > 34(1): 112-115. > DOI: 10.3969/j.issn.1001-3806.2010.01.032

LI Zhi-bin, ZHENG Gang, ZHANG Li-xin. A method for enhancing contrast of reconstructed particle image[J]. LASER TECHNOLOGY, 2010, 34(1): 112-115. DOI: 10.3969/j.issn.1001-3806.2010.01.032

Citation:

LI Zhi-bin, ZHENG Gang, ZHANG Li-xin. A method for enhancing contrast of reconstructed particle image[J]. LASER TECHNOLOGY, 2010, 34(1): 112-115. DOI: 10.3969/j.issn.1001-3806.2010.01.032

Citation:

LI Zhi-bin, ZHENG Gang, ZHANG Li-xin. A method for enhancing contrast of reconstructed particle image[J]. LASER TECHNOLOGY, 2010, 34(1): 112-115. DOI: 10.3969/j.issn.1001-3806.2010.01.032

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A method for enhancing contrast of reconstructed particle image

1.
College of Optics and Electronics Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2.
College of Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
3.
Faculty of Electric and Automatic Engineering, Shanghai University of Electric Power, Shanghai 200090, China

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Received Date: October 08, 2008
Revised Date: December 08, 2008
Published Date: January 24, 2010

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Abstract

Abstract

In order to improve the contrast of a reconstructed image and reduce the effect of directly transmitted light, conjugate image and defocused image on the focused image of the particle in the reconstruction of a 3-D particle digital holography,a numerical method was proposed in which the above effect can be reduced because of the subtraction of both the complex amplitudes of the particle in the focused and defocused planes. The theory of the method was presented. The simulated results and experimental examples were shown. This method is useful to slice in-line digital holograms to display only in-focus particles at a focused plane. Furthermore,in the reconstruction process,only a single hologram is needed without additional pre- or post- processing.
- holography,
- in-line digital holography,
- depth of focus,
- particle analysis,
- defocused image

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References (17)

References

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