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Temperature recovery and contrast computations in NDE thermographic imaging systems

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1007/BF00567074
AuthorSearch for: ; Search for: 1; Search for: 1
Affiliation
  1. National Research Council Canada
FormatText, Article
Subjectthermography; calibration; image processing; nondestructive testing; contrast computations; infrared methods
Abstract
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.
Publication date
PublisherSpringer
In
  • Journal of Nondestructive Evaluation 10, no. 1: 19–30.
LanguageEnglish
Peer reviewedYes
NRC numberCNRC 33759
NRC-IMI92AP-12100-1321-G
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Record identifier3ae6bd8b-5a28-4a68-9c4f-6d01d0653ed1
Record created2020-06-04
Record modified2020-06-04
Date modified: