Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method

Analyzing the quality of images generated from an imaging method is essential for determining the limits and applicability of that method. This study analyzed the quality of images resulting from a photothermal imaging method by applying the line spread function and the modulation transfer function...

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Main Authors:	Moojoong Kim, Jaisuk Yoo, Dong-Kwon Kim, Hyunjung Kim
Format:	Article
Language:	English
Published:	MDPI AG 2019-05-01
Series:	Applied Sciences
Subjects:	photothermal imaging image quality contrast spatial resolution MTF ERF LSF
Online Access:	https://www.mdpi.com/2076-3417/9/10/1996

id	doaj-a408f69fbc2f4d5c97fe86f45c964ac6
record_format	Article
spelling	doaj-a408f69fbc2f4d5c97fe86f45c964ac62020-11-24T21:30:09ZengMDPI AGApplied Sciences2076-34172019-05-01910199610.3390/app9101996app9101996Measurement of Contrast and Spatial Resolution for the Photothermal Imaging MethodMoojoong Kim0Jaisuk Yoo1Dong-Kwon Kim2Hyunjung Kim3Department of Mechanical Engineering, Ajou University, Suwon, Gyeonggi-do 16499, KoreaDepartment of Mechanical Engineering, Ajou University, Suwon, Gyeonggi-do 16499, KoreaDepartment of Mechanical Engineering, Ajou University, Suwon, Gyeonggi-do 16499, KoreaDepartment of Mechanical Engineering, Ajou University, Suwon, Gyeonggi-do 16499, KoreaAnalyzing the quality of images generated from an imaging method is essential for determining the limits and applicability of that method. This study analyzed the quality of images resulting from a photothermal imaging method by applying the line spread function and the modulation transfer function to the spatial resolution and contrast, on the basis of certain parameters of the photothermal imaging method for a copper-resin double-layered structure. The parameters are the ratio of the first-layer thickness to the thermal diffusion length (<em>L<sub>f</sub>/L<sub>d</sub></em>) and the ratio of the pump-beam radius to the thermal diffusion length (<em>R<sub>b</sub></em>/<em>L<sub>d</sub></em>). The phase delay profile (edge response function, ERF) of the subsurface structure derived from the photothermal imaging method becomes dimensionless upon division by the thermal diffusion length; as the ratio <em>L<sub>f</sub></em>/<em>L<sub>d</sub></em> increases, the spatial resolution and contrast increase.https://www.mdpi.com/2076-3417/9/10/1996photothermal imagingimage qualitycontrastspatial resolutionMTFERFLSF
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Moojoong Kim Jaisuk Yoo Dong-Kwon Kim Hyunjung Kim
spellingShingle	Moojoong Kim Jaisuk Yoo Dong-Kwon Kim Hyunjung Kim Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method Applied Sciences photothermal imaging image quality contrast spatial resolution MTF ERF LSF
author_facet	Moojoong Kim Jaisuk Yoo Dong-Kwon Kim Hyunjung Kim
author_sort	Moojoong Kim
title	Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method
title_short	Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method
title_full	Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method
title_fullStr	Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method
title_full_unstemmed	Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method
title_sort	measurement of contrast and spatial resolution for the photothermal imaging method
publisher	MDPI AG
series	Applied Sciences
issn	2076-3417
publishDate	2019-05-01
description	Analyzing the quality of images generated from an imaging method is essential for determining the limits and applicability of that method. This study analyzed the quality of images resulting from a photothermal imaging method by applying the line spread function and the modulation transfer function to the spatial resolution and contrast, on the basis of certain parameters of the photothermal imaging method for a copper-resin double-layered structure. The parameters are the ratio of the first-layer thickness to the thermal diffusion length (<em>L<sub>f</sub>/L<sub>d</sub></em>) and the ratio of the pump-beam radius to the thermal diffusion length (<em>R<sub>b</sub></em>/<em>L<sub>d</sub></em>). The phase delay profile (edge response function, ERF) of the subsurface structure derived from the photothermal imaging method becomes dimensionless upon division by the thermal diffusion length; as the ratio <em>L<sub>f</sub></em>/<em>L<sub>d</sub></em> increases, the spatial resolution and contrast increase.
topic	photothermal imaging image quality contrast spatial resolution MTF ERF LSF
url	https://www.mdpi.com/2076-3417/9/10/1996
work_keys_str_mv	AT moojoongkim measurementofcontrastandspatialresolutionforthephotothermalimagingmethod AT jaisukyoo measurementofcontrastandspatialresolutionforthephotothermalimagingmethod AT dongkwonkim measurementofcontrastandspatialresolutionforthephotothermalimagingmethod AT hyunjungkim measurementofcontrastandspatialresolutionforthephotothermalimagingmethod
_version_	1725963611824717824

Measurement of Contrast and Spatial Resolution for the Photothermal Imaging Method

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