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Holography

Comparison and verification of numerical reconstruction methods in digital holography

[+] Author Affiliations
Changgeng Liu

Beijing University of Technology, College of Applied Sciences, Chao Yang District, Beijing 100124, China

Dayong Wang

Beijing University of Technology, College of Applied Sciences, Chao Yang District, Beijing 100124, China

Yizhuo Zhang

Beijing University of Technology, College of Applied Sciences, Chao Yang District, Beijing 100124, China

Opt. Eng. 48(10), 105802 (October 26, 2009). doi:10.1117/1.3251340
History: Received May 30, 2009; Revised September 03, 2009; Accepted September 04, 2009; Published October 26, 2009
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The expressions for the reconstructed field from the sample of the diffracted wave, which is produced by illuminating an object, are found by use of different diffraction integrals in the digital holography. The numerical reconstruction methods that truncate and sample this field are compared in overlapping quality, accuracy, pixel resolution, computation window, and speed. The fast Fourier transform (FFT)–based direct integration method for the Fresnel integral and the modified FFT-based direct integration method for the Rayleigh-Sommerfeld integral have similar overlapping quality and can flexibly control pixel resolution and computation window size. Meanwhile, the FFT-based angular spectrum method is superior to the FFT-based convolution method in accuracy and speed. The experimental results are presented to verify these consequences.

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© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Changgeng Liu ; Dayong Wang and Yizhuo Zhang
"Comparison and verification of numerical reconstruction methods in digital holography", Opt. Eng. 48(10), 105802 (October 26, 2009). ; http://dx.doi.org/10.1117/1.3251340


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