An apodized cubic phase mask used in a wavefront coding system to extend the depth of field

An apodized cubic phase mask used in a wavefront coding system to extend the depth of field

The point spread function (PSF) caused by a wavefront coding system with a cubic phase mask has big side-lobes which leads to bad image restoration. This paper proposes a novel apodized cubic phase mask to suppress the side-lobes of the PSF. Simulated annealing algorithm is used to optimize the cubi...

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Veröffentlicht in:Chinese physics B 2022-04, Vol.31 (5), p.54217-485
Hauptverfasser: Zhu, Lina, Li, Fei, Huang, Zeyu, Zhao, Tingyu
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apodized cubic phase mask
depth of field
image restoration
wavefront coding
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container_title Chinese physics B
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creator Zhu, Lina
Li, Fei
Huang, Zeyu
Zhao, Tingyu
description The point spread function (PSF) caused by a wavefront coding system with a cubic phase mask has big side-lobes which leads to bad image restoration. This paper proposes a novel apodized cubic phase mask to suppress the side-lobes of the PSF. Simulated annealing algorithm is used to optimize the cubic and the truncation parameter of the phase mask. The system with the novel phase mask has better performance in the modulation transfer function (MTF) especially in low-and-medium spatial frequency region. The simulation results show that the restored images with the novel phase mask are superior to the one with the classic cubic phase mask in contrast and ringing effect. The experimental results show that the side-lobes of the PSF are suppressed by using the apodized cubic phase mask.
doi_str_mv 10.1088/1674-1056/ac5979
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Phys. B</addtitle><date>2022-04-01</date><risdate>2022</risdate><volume>31</volume><issue>5</issue><spage>54217</spage><epage>485</epage><pages>54217-485</pages><issn>1674-1056</issn><abstract>The point spread function (PSF) caused by a wavefront coding system with a cubic phase mask has big side-lobes which leads to bad image restoration. This paper proposes a novel apodized cubic phase mask to suppress the side-lobes of the PSF. Simulated annealing algorithm is used to optimize the cubic and the truncation parameter of the phase mask. The system with the novel phase mask has better performance in the modulation transfer function (MTF) especially in low-and-medium spatial frequency region. The simulation results show that the restored images with the novel phase mask are superior to the one with the classic cubic phase mask in contrast and ringing effect. 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subjects apodized cubic phase mask
depth of field
image restoration
wavefront coding
title An apodized cubic phase mask used in a wavefront coding system to extend the depth of field
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