Paper Info
Title
Optical gas imaging with uncooled thermal imaging camera - impact of warm filters and elevated background temperature
Abstract
The goal of the presented article is to investigate the impact of warm filters and elevated background temperature on the operation of an uncooled wideband camera used for optical gas imaging (OGI). The noise equivalent temperature difference (NETD) parameter is measured for a VOx wideband OGI camera built for the purpose of the experiments, with and without an interference filter. The results demonstrate that warm filters have a clear effect on the performance of the OGI camera. Based on the standard NETD measurement procedures, a camera-scene noise equivalent temperature difference (CSNETD) parameter is proposed to quantify both the camera and scene noise. The CSNETD measurements are used to evaluate the impact of elevated background temperature on the performance of the OGI camera. Finally, the camera is used to image methane leaks in the mid-wave infrared (MWIR) and long-wave infrared (LWIR) bands. The results are consistent with the presented NETD/CSNETD measurements and confirm the impact of warm filters and elevated background temperature on the operation of the uncooled thermal imaging camera.
Year
DOI
Venue
2020
10.1109/TIE.2019.2956412
IEEE Transactions on Industrial Electronics
Keywords
DocType
Volume
Cameras,Optical filters,Temperature measurement,Optical imaging,Optical sensors,Standards
Journal
67
Issue
ISSN
Citations 
11
0278-0046
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
Robert Olbrycht100.68
Marcin Kaluza200.68