Temperature recovery and contrast computations in NDE thermographic imaging systems

DOI	Trouver le DOI : https://doi.org/10.1007/BF00567074
Auteur	Rechercher : Maldague, X.; Rechercher : Krapez, J. -C.¹; Rechercher : Cielo, P.¹
Affiliation	Conseil national de recherches Canada
Format	Texte, Article
Sujet	thermography; calibration; image processing; nondestructive testing; contrast computations; infrared methods
Résumé	Thermographic imaging systems find application in many nondestructive evaluation problems. However, because of the inherent nature of the image-formation process, several degradations arise which preclude a more generalized use of thermographic NDE. In this paper, we analyze radiometric and noise degradations and propose a calibration process for the imaging systems which allows recovery of object surface temperature evolution. Moreover, a constrast computation technique which combines both the time and spatial reference techniques is shown to increase the defect visibility and make possible a more quantitative (sizing) defect evaluation.
Date de publication	1991-03-01
Maison d’édition	Springer
Dans	Journal of Nondestructive Evaluation 10, nº 1 : 19–30.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro du CNRC	CNRC 33759 NRC-IMI92AP-12100-1321-G
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	3ae6bd8b-5a28-4a68-9c4f-6d01d0653ed1
Enregistrement créé	2020-06-04
Enregistrement modifié	2020-06-04