Application of Digital Hologram Apodization Using Tukey-Window for Particle In-Focus Position Measurement

Yancao, 张延曹 Zhang; Jianlin, 赵建林 Zhao; Qi, 范琦 Fan; Wei, 张伟 Zhang

doi:10.3788/cjl20083510.1542

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So the apodization function used for a digital hologram with a rectangle must be different from the window function that used in the circular aperture. We applied the apodization [5,6] in particle measurement using the Tukey window [7], and constructed a simple apodization transmission profile in the application of extension and apodization [8]. The experimental result confirms that these kinds of apodization windows can effectively suppress aperture diffraction and meanwhile not modify the intensity distribution in the central part in the reconstruction.…”

Section: Introductionmentioning

confidence: 66%

Optimization of the window function for digital hologram apodization in reconstructing the holographic image

Zhang

Fan

et al. 2013

J. Opt.

View full text Add to dashboard Cite

In this paper, an optimal window function used for digital hologram apodization in reconstructing the holographic image is presented, which is generated by a cosine window convolving with a rectangle window and has a flat top because of the rectangle shape of the hologram. The window’s parameters are optimized using a genetic algorithm to make sure that the sidelobes of the window are minimum. Numerical simulation results show that the new window has a sidelobe lower than that of the Tukey window, and experimental results show that apodization using this window can suppress the diffraction effectively in reconstructing the holographic image.

show abstract

Section: Introductionmentioning

confidence: 66%

Optimization of the window function for digital hologram apodization in reconstructing the holographic image

Zhang

Fan

et al. 2013

J. Opt.

View full text Add to dashboard Cite

show abstract

Improving the phase measurement by the apodization filter in the digital holography

Chang

Wang

et al. 2012

SPIE Proceedings

View full text Add to dashboard Cite

Improving the reconstruction quality with extension and apodization of the digital hologram

et al. 2009

View full text Add to dashboard Cite

To suppress the aperture diffraction and spectral leakage effects in the reconstruction process of the digital hologram and to maintain the original information recorded in the hologram, a novel reconstruction method based on extension and apodization of the digital hologram is presented, by which the original hologram can be extended by filling the average intensity values of the boundary, and the extended hologram is apodized by use of the constructed window function. As a sample, the digital hologram of the static particle field is recorded and numerically extended and then apodized with the appointed window. Finally, an unabridged and clear digital holographic image is reconstructed from the extended and apodized hologram. The experimental results confirm that this method cannot only eliminate the black-and-white diffraction fringes in the reconstructed image, but also attain the unabridged image with high quality.

show abstract

Application of Digital Hologram Apodization Using Tukey-Window for Particle In-Focus Position Measurement

Cited by 3 publications

References 0 publications

Optimization of the window function for digital hologram apodization in reconstructing the holographic image

Optimization of the window function for digital hologram apodization in reconstructing the holographic image

Improving the phase measurement by the apodization filter in the digital holography

Improving the reconstruction quality with extension and apodization of the digital hologram

Contact Info

Product

Resources

About