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A TRANSPLANTABLE COMPENSATION SCHEME FOR THE EFFECT OF THE RADIANCE FROM THE INTERIOR OF A CAMERA ON THE ACCURACY OF TEMPERATURE MEASUREMENT

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Abstract

Radiance coming from the interior of an uncooled infrared camera has a significant effect on the measured value of the temperature of the object. This paper presents a three-phase compensation scheme for coping with this effect. The first phase acquires the calibration data and forms the calibration function by least square fitting. Likewise, the second phase obtains the compensation data and builds the compensation function by fitting. With the aid of these functions, the third phase determines the temperature of the object in concern from any given ambient temperature.

It is known that acquiring the compensation data of a camera is very time-consuming. For the purpose of getting the compensation data at a reasonable time cost, we propose a transplantable scheme. The idea of this scheme is to calculate the ratio between the central pixel’s responsivity of the child camera to the radiance from the interior and that of the mother camera, followed by determining the compensation data of the child camera using this ratio and the compensation data of the mother camera

Experimental results show that either of the child camera and the mother camera can measure the temperature of the object with an error of no more than 2°C.

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Authors and Affiliations

  1. Computer School, Chongqing Institute of Technology, Chongqing, 400040, China

    Shidu Dong & Bo He

  2. College of Computer Science, Chongqing University, Chongqing, 400044, China

    Xiaofan Yang

  3. College of Communication, Chongqing University, Chongqing, 400044, China

    Guojin Liu

Authors
  1. Shidu Dong
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  2. Xiaofan Yang
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  3. Bo He
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  4. Guojin Liu
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Correspondence to Shidu Dong.

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Dong, S., Yang, X., He, B. et al. A TRANSPLANTABLE COMPENSATION SCHEME FOR THE EFFECT OF THE RADIANCE FROM THE INTERIOR OF A CAMERA ON THE ACCURACY OF TEMPERATURE MEASUREMENT. Int J Infrared Milli Waves 27, 1517–1528 (2006). https://doi.org/10.1007/s10762-006-9153-0

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  • DOI: https://doi.org/10.1007/s10762-006-9153-0

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