Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields

Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields

In this study, we examine the quality of microscale ghost images as a function of the measured histographic signal distribution of the speckle fields from a nonuniform pseudothermal light source. This research shows that the distribution of the detected signal level on each pixel of the camera plays...

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Bibliographic Details
Main Authors: Zhe Sun, Frederik Tuitje, Christian Spielmann
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Applied Sciences
Subjects:
ghost imaging
speckle field
pixel intensity distribution
contrast-to-noise ratio
Online Access:https://www.mdpi.com/2076-3417/11/6/2621
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spelling doaj-31ae54ff8801435d86201722847167dd2021-03-17T00:00:11ZengMDPI AGApplied Sciences2076-34172021-03-01112621262110.3390/app11062621Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle FieldsZhe Sun0Frederik Tuitje1Christian Spielmann2Abbe Center of Photonics, Institute of Optics and Quantum Electronics, Friedrich Schiller University, Max Wien Platz 1, 07743 Jena, GermanyAbbe Center of Photonics, Institute of Optics and Quantum Electronics, Friedrich Schiller University, Max Wien Platz 1, 07743 Jena, GermanyAbbe Center of Photonics, Institute of Optics and Quantum Electronics, Friedrich Schiller University, Max Wien Platz 1, 07743 Jena, GermanyIn this study, we examine the quality of microscale ghost images as a function of the measured histographic signal distribution of the speckle fields from a nonuniform pseudothermal light source. This research shows that the distribution of the detected signal level on each pixel of the camera plays a significant role in improving the contrast-to-noise ratio (CNR) of pseudothermal ghost imaging. To our knowledge, the scaling of CNR with different pixel intensity distributions of the speckle fields is observed for the first time in the field of pseudothermal microscale ghost imaging. The experimental observations are in very good agreement with numerical analysis. Based on these findings, we can predict the settings for light sources that will maximize the CNR of microscale ghost images.https://www.mdpi.com/2076-3417/11/6/2621ghost imagingspeckle fieldpixel intensity distributioncontrast-to-noise ratio
collection DOAJ
language English
format Article
sources DOAJ
author Zhe Sun
Frederik Tuitje
Christian Spielmann
spellingShingle Zhe Sun
Frederik Tuitje
Christian Spielmann
Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields
Applied Sciences
ghost imaging
speckle field
pixel intensity distribution
contrast-to-noise ratio
author_facet Zhe Sun
Frederik Tuitje
Christian Spielmann
author_sort Zhe Sun
title Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields
title_short Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields
title_full Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields
title_fullStr Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields
title_full_unstemmed Improving the Contrast of Pseudothermal Ghost Images Based on the Measured Signal Distribution of Speckle Fields
title_sort improving the contrast of pseudothermal ghost images based on the measured signal distribution of speckle fields
publisher MDPI AG
series Applied Sciences
issn 2076-3417
publishDate 2021-03-01
description In this study, we examine the quality of microscale ghost images as a function of the measured histographic signal distribution of the speckle fields from a nonuniform pseudothermal light source. This research shows that the distribution of the detected signal level on each pixel of the camera plays a significant role in improving the contrast-to-noise ratio (CNR) of pseudothermal ghost imaging. To our knowledge, the scaling of CNR with different pixel intensity distributions of the speckle fields is observed for the first time in the field of pseudothermal microscale ghost imaging. The experimental observations are in very good agreement with numerical analysis. Based on these findings, we can predict the settings for light sources that will maximize the CNR of microscale ghost images.
topic ghost imaging
speckle field
pixel intensity distribution
contrast-to-noise ratio
url https://www.mdpi.com/2076-3417/11/6/2621
work_keys_str_mv AT zhesun improvingthecontrastofpseudothermalghostimagesbasedonthemeasuredsignaldistributionofspecklefields
AT frederiktuitje improvingthecontrastofpseudothermalghostimagesbasedonthemeasuredsignaldistributionofspecklefields
AT christianspielmann improvingthecontrastofpseudothermalghostimagesbasedonthemeasuredsignaldistributionofspecklefields
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