Study on methods to extract high contrast image in active dynamic thermography

In the present study, image reconstruction methods are applied in active dynamic thermography (ADT) to visualize the superficial blood vessel with high contrast. ADT is performed on the left forearm of a human subject by applying cooling based external thermal stimulation. Both non-parametrized, viz...

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Main Authors: Saxena, Ashish, Raman, Vignesh, Ng, Eddie Yin Kwee
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/144497
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1444972023-03-04T17:13:54Z Study on methods to extract high contrast image in active dynamic thermography Saxena, Ashish Raman, Vignesh Ng, Eddie Yin Kwee School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Active Dynamic Thermography In the present study, image reconstruction methods are applied in active dynamic thermography (ADT) to visualize the superficial blood vessel with high contrast. ADT is performed on the left forearm of a human subject by applying cooling based external thermal stimulation. Both non-parametrized, viz. sequence image, sequentially subtracted image, Discrete Fourier Transformation (phase and amplitude image), and Thermographic Signal Reconstruction (TSR), and parametrized, viz. Tau time (τ), dTnorm, t90−10n, and Tissue Activity Ratio (TAR), types of image reconstruction methods are used. To perform a quantitative comparison, among the image reconstruction methods, the image contrast value is evaluated. While sequentially subtracted image provides a high contrast image in non-parametrized image reconstruction methods, for parametrized image reconstruction methods, it is TAR. Among all the methods considered, TAR provides the best contrast image followed by τ image method. Nanyang Technological University Accepted version The work has been supported by SingHealth-NTU collaborative research grant [Grant number: SHS-NTU/014/2016]. 2020-11-10T00:51:56Z 2020-11-10T00:51:56Z 2019 Journal Article Saxena, A., Raman, V., & Ng, E. Y. K. (2019). Study on methods to extract high contrast image in active dynamic thermography. Quantitative InfraRed Thermography Journal, 16(3-4), 243-259. doi:10.1080/17686733.2019.1586376 1768-6733 https://hdl.handle.net/10356/144497 10.1080/17686733.2019.1586376 3-4 16 243 259 en Quantitative InfraRed Thermography Journal This is an Accepted Manuscript of an article published by Taylor & Francis in Quantitative InfraRed Thermography Journal on 19 Mar 2019, available online: http://www.tandfonline.com/10.1080/17686733.2019.1586376. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Active Dynamic
Thermography
spellingShingle Engineering::Mechanical engineering
Active Dynamic
Thermography
Saxena, Ashish
Raman, Vignesh
Ng, Eddie Yin Kwee
Study on methods to extract high contrast image in active dynamic thermography
description In the present study, image reconstruction methods are applied in active dynamic thermography (ADT) to visualize the superficial blood vessel with high contrast. ADT is performed on the left forearm of a human subject by applying cooling based external thermal stimulation. Both non-parametrized, viz. sequence image, sequentially subtracted image, Discrete Fourier Transformation (phase and amplitude image), and Thermographic Signal Reconstruction (TSR), and parametrized, viz. Tau time (τ), dTnorm, t90−10n, and Tissue Activity Ratio (TAR), types of image reconstruction methods are used. To perform a quantitative comparison, among the image reconstruction methods, the image contrast value is evaluated. While sequentially subtracted image provides a high contrast image in non-parametrized image reconstruction methods, for parametrized image reconstruction methods, it is TAR. Among all the methods considered, TAR provides the best contrast image followed by τ image method.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Saxena, Ashish
Raman, Vignesh
Ng, Eddie Yin Kwee
format Article
author Saxena, Ashish
Raman, Vignesh
Ng, Eddie Yin Kwee
author_sort Saxena, Ashish
title Study on methods to extract high contrast image in active dynamic thermography
title_short Study on methods to extract high contrast image in active dynamic thermography
title_full Study on methods to extract high contrast image in active dynamic thermography
title_fullStr Study on methods to extract high contrast image in active dynamic thermography
title_full_unstemmed Study on methods to extract high contrast image in active dynamic thermography
title_sort study on methods to extract high contrast image in active dynamic thermography
publishDate 2020
url https://hdl.handle.net/10356/144497
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