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Active thermal super-resolution based on laser flying spot technique coupled with IR thermography and wavelet transform

Article dans une revue avec comité de lecture
Author
ccGROZ, Marie-Marthe
1002421 Institut de Mécanique et d'Ingénierie [I2M]
ccABISSET-CHAVANNE, Emmanuelle
241321 Institut de Mathématiques de Marseille [I2M]
BATSALE, Jean-Christophe
1002421 Institut de Mécanique et d'Ingénierie [I2M]
ccSOMMIER, Alain
259761 Université de Bordeaux [UB]
1002421 Institut de Mécanique et d'Ingénierie [I2M]

URI
http://hdl.handle.net/10985/25754
DOI
10.1080/17686733.2023.2299499
Date
2024-01-03
Journal
Quantitative InfraRed Thermography Journal

Abstract

A super-resolution technique combining the laser flying spot technique with infrared (IR) thermography and wavelet transform is proposed herein. The resolution of thermal images captured by an IR camera is typically limited by the size of its pixels. The objective of this study is to enhance the resolution of such images by using a laser spot with a diameter smaller than a camera pixel. By analysing the thermal response with the wavelet transform and the position of the laser within the camera pixels, this method takes a step towards achieving thermal super-resolution. The paper presents the methodology of this approach along with numerical and experimental examples to demonstrate its effectiveness.

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