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Proceedings Paper

Focal plane location in digital holography
Author(s): Yan Yang; Bo-seon Kang; Yeon-jun Choo
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Paper Abstract

The correlation coefficient method is introduced to locate the focal plane in digital particle holography. It uses the fact that the correlation coefficient is maximum at the focal plane. The factors influencing this method are discussed with a numerical simulation of holograms. For real holograms, the Wiener filter was first proposed to process both recorded holograms and reconstructed images. The application results using the dot array target showed that the Wiener filter is a very effective tool for processing holography-related images. The effects of the dot size and the object distance on the errors in the determination of the focal plane by the correlation coefficient method were investigated by using the calibration target.

Paper Details

Date Published: 6 December 2007
PDF: 6 pages
Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 672365 (6 December 2007); doi: 10.1117/12.787618
Show Author Affiliations
Yan Yang, Chongqing Institute of Technology (China)
Chonnam National Univ. (South Korea)
Bo-seon Kang, Chonnam National Univ. (South Korea)
Yeon-jun Choo, Korea Atomic Energy Research Institute (South Korea)


Published in SPIE Proceedings Vol. 6723:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Junhua Pan; James C. Wyant; Hexin Wang, Editor(s)

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