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Title: Calibration procedure for focal plane array cameras and noise equivalent material loss for quantitative thermographic NDT

Abstract

In this paper, a complete procedure is proposed for the calibration of a focal plane array in quantitative infrared nondestructive testing (NDT). This procedure includes vignetting correction and gray level conversion into temperature. A noise analysis is also presented in the context of pulsed infrared thermography applied to NDT. In this analysis, the authors introduce a new parameter, the noise equivalent material loss (NEML). The NEML is a global figure of merit which allows the comparison of different experimental set-ups for infrared pulsed thermography. Theory, experimental validation of the proposed concepts, and comparison with a few infrared scanning thermal imagers are presented as well.

Authors:
;  [1];  [2]
  1. Univ. Laval, Quebec City, Quebec (Canada). Electrical and Computer Engineering Dept.
  2. National Research Council of Canada, Boucherville, Quebec (Canada)
Publication Date:
OSTI Identifier:
471095
Resource Type:
Journal Article
Journal Name:
Materials Evaluation
Additional Journal Information:
Journal Volume: 55; Journal Issue: 3; Other Information: PBD: Mar 1997
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; INFRARED THERMOGRAPHY; NONDESTRUCTIVE TESTING; CALIBRATION; CAMERAS; CORROSION; DEFECTS

Citation Formats

Marinetti, S, Maldague, X, and Prystay, M. Calibration procedure for focal plane array cameras and noise equivalent material loss for quantitative thermographic NDT. United States: N. p., 1997. Web.
Marinetti, S, Maldague, X, & Prystay, M. Calibration procedure for focal plane array cameras and noise equivalent material loss for quantitative thermographic NDT. United States.
Marinetti, S, Maldague, X, and Prystay, M. 1997. "Calibration procedure for focal plane array cameras and noise equivalent material loss for quantitative thermographic NDT". United States.
@article{osti_471095,
title = {Calibration procedure for focal plane array cameras and noise equivalent material loss for quantitative thermographic NDT},
author = {Marinetti, S and Maldague, X and Prystay, M},
abstractNote = {In this paper, a complete procedure is proposed for the calibration of a focal plane array in quantitative infrared nondestructive testing (NDT). This procedure includes vignetting correction and gray level conversion into temperature. A noise analysis is also presented in the context of pulsed infrared thermography applied to NDT. In this analysis, the authors introduce a new parameter, the noise equivalent material loss (NEML). The NEML is a global figure of merit which allows the comparison of different experimental set-ups for infrared pulsed thermography. Theory, experimental validation of the proposed concepts, and comparison with a few infrared scanning thermal imagers are presented as well.},
doi = {},
url = {https://www.osti.gov/biblio/471095}, journal = {Materials Evaluation},
number = 3,
volume = 55,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 1997},
month = {Sat Mar 01 00:00:00 EST 1997}
}