Focal plane location in digital holography

Yan Yang; Bo-seon Kang; Yeon-jun Choo

doi:10.1117/12.787618

6 December 2007 Focal plane location in digital holography

Yan Yang, Bo-seon Kang, Yeon-jun Choo

Proceedings Volume 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 672365 (2007) https://doi.org/10.1117/12.787618
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

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.

Citation Download Citation

Yan Yang, Bo-seon Kang, and Yeon-jun Choo "Focal plane location in digital holography", Proc. SPIE 6723, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 672365 (6 December 2007); https://doi.org/10.1117/12.787618

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