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Proceedings Paper

Variation of NETD caused by nonuniformity correction in thermal imager
Author(s): Shi-Chen Chao; Hau-Ming Huang
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Paper Abstract

The background irradiances in different temperatures are calculated to find its relation with the measured NETD (Noise Equivalent Temperature Difference). In the nonuniformity correction, it always uses the active pixels to cover the dead pixels so that the final value of NETD is an average. Some experimental results show that the video waveform of thermal imaging depends on the setting of the level or the gain. These factors always influence the measured data of NETD. Nevertheless, NETD is a good diagnostic tool for determining the quality of the thermal imager. A NETD analysis for 1-point and 2-point correction is attached at the end of this article.

Paper Details

Date Published: 26 August 1998
PDF: 9 pages
Proc. SPIE 3377, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IX, (26 August 1998); doi: 10.1117/12.319381
Show Author Affiliations
Shi-Chen Chao, Chung Shan Institute of Science and Technology (Taiwan)
Hau-Ming Huang, Ta Hwa Institute of Technology (Taiwan)

Published in SPIE Proceedings Vol. 3377:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IX
Gerald C. Holst, Editor(s)

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