Single image reconstruction in active dynamic thermography : a novel approach

In the present study, a novel single thermal image reconstruction method, from the transient image series in active dynamic thermography (ADT), is proposed. ADT is performed with an external stimulation in the form of cooling, over the forearm skin tissue of a human subject, and the resulting transi...

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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: 2019
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Online Access:https://hdl.handle.net/10356/85374
http://hdl.handle.net/10220/49219
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-853742023-03-04T17:15:11Z Single image reconstruction in active dynamic thermography : a novel approach Saxena, Ashish Raman, Vignesh Ng, Eddie Yin Kwee School of Mechanical and Aerospace Engineering Tissue Activity Ratio Active Dynamic Thermography Engineering::Mechanical engineering In the present study, a novel single thermal image reconstruction method, from the transient image series in active dynamic thermography (ADT), is proposed. ADT is performed with an external stimulation in the form of cooling, over the forearm skin tissue of a human subject, and the resulting transient images (due to thermal recovery) are captured using a non-contact Infrared (IR) thermal camera. A unique tissue activity ratio (), the ratio of thermal recovery rate to excitation rate is calculated at each pixel, and hence, a single thermal image (called image) is reconstructed. Using a conventional single image reconstruction method in ADT called Tau (τ) image method, a comparative study is performed, which reveals that the blood vessel contrast produced by the image is at least 1.3 times higher than the equivalent τ image. Further, using this image, the diameter of the blood vessel is calculated, and the values are compared with the τ image and the earlier reported thermography results on the same subjects, which reveals that the reconstructed image is an equivalent qualitative and quantitative representation of transient sequence images. The method devised can further be implemented for medical ADT procedures. Accepted version 2019-07-09T08:27:48Z 2019-12-06T16:02:41Z 2019-07-09T08:27:48Z 2019-12-06T16:02:41Z 2018 Journal Article Saxena, A., Raman, V., & Ng, E. Y. K. (2018). Single image reconstruction in active dynamic thermography : a novel approach. Infrared Physics & Technology, 9353-58. doi:10.1016/j.infrared.2018.07.020 1350-4495 https://hdl.handle.net/10356/85374 http://hdl.handle.net/10220/49219 10.1016/j.infrared.2018.07.020 en Infrared Physics & Technology © 2018 Elsevier. All rights reserved. This paper was published in Infrared Physics & Technology and is made available with permission of Elsevier. 18 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Tissue Activity Ratio
Active Dynamic Thermography
Engineering::Mechanical engineering
spellingShingle Tissue Activity Ratio
Active Dynamic Thermography
Engineering::Mechanical engineering
Saxena, Ashish
Raman, Vignesh
Ng, Eddie Yin Kwee
Single image reconstruction in active dynamic thermography : a novel approach
description In the present study, a novel single thermal image reconstruction method, from the transient image series in active dynamic thermography (ADT), is proposed. ADT is performed with an external stimulation in the form of cooling, over the forearm skin tissue of a human subject, and the resulting transient images (due to thermal recovery) are captured using a non-contact Infrared (IR) thermal camera. A unique tissue activity ratio (), the ratio of thermal recovery rate to excitation rate is calculated at each pixel, and hence, a single thermal image (called image) is reconstructed. Using a conventional single image reconstruction method in ADT called Tau (τ) image method, a comparative study is performed, which reveals that the blood vessel contrast produced by the image is at least 1.3 times higher than the equivalent τ image. Further, using this image, the diameter of the blood vessel is calculated, and the values are compared with the τ image and the earlier reported thermography results on the same subjects, which reveals that the reconstructed image is an equivalent qualitative and quantitative representation of transient sequence images. The method devised can further be implemented for medical ADT procedures.
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 Single image reconstruction in active dynamic thermography : a novel approach
title_short Single image reconstruction in active dynamic thermography : a novel approach
title_full Single image reconstruction in active dynamic thermography : a novel approach
title_fullStr Single image reconstruction in active dynamic thermography : a novel approach
title_full_unstemmed Single image reconstruction in active dynamic thermography : a novel approach
title_sort single image reconstruction in active dynamic thermography : a novel approach
publishDate 2019
url https://hdl.handle.net/10356/85374
http://hdl.handle.net/10220/49219
_version_ 1759856573950197760