Thermal Imaging Metrology Using High Dynamic Range Near-Infrared Photovoltaic-Mode Camera.
Thermal Imaging Metrology Using High Dynamic Range Near-Infrared Photovoltaic-Mode Camera.
复制标题
使用高动态范围近红外光电模式相机的热成像计量。
DOI:
10.3390/s21186151
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发表时间:
2021-09-13
期刊:
影响因子:
--
通讯作者:
Willmott JR
中科院分区:
文献类型:
--
作者:
Rockett TBO;Boone NA;Richards RD;Willmott JR
The measurement of a wide temperature range in a scene requires hardware capable of high dynamic range imaging. We describe a novel near-infrared thermal imaging system operating at a wavelength of 940 nm based on a commercial photovoltaic mode high dynamic range camera and analyse its measurement uncertainty. The system is capable of measuring over an unprecedently wide temperature range; however, this comes at the cost of a reduced temperature resolution and increased uncertainty compared to a conventional CMOS camera operating in photodetective mode. Despite this, the photovoltaic mode thermal camera has an acceptable level of uncertainty for most thermal imaging applications with an NETD of 4–12 °C and a combined measurement uncertainty of approximately 1% K if a low pixel clock is used. We discuss the various sources of uncertainty and how they might be minimised to further improve the performance of the thermal camera. The thermal camera is a good choice for imaging low frame rate applications that have a wide inter-scene temperature range.
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