2009
DOI: 10.1063/1.3213075
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A method for the temperature calibration of an infrared camera using water as a radiative source

Abstract: Presented here is an effective low-cost method for the temperature calibration of infrared cameras, for applications in the 0-100 degrees C range. The calibration of image gray level intensity to temperature is achieved by imaging an upwelling flow of water, the temperature of which is measured with a thermistor probe. The upwelling flow is created by a diffuser located below the water surface of a constant temperature water bath. The thermistor probe is kept immediately below the surface, and the distance fro… Show more

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Cited by 14 publications
(5 citation statements)
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“…Spatial variation in the temperature over a bed surface was measured by the IR camera and compared with a point temperature measurement by thermocouples to calibrate the IRT measurement. The output signal [digital level (DL)] from the IR camera depends on the spectral black‐body radiation M ( λ , T ) emitted by the source at a given temperature T , the emissivity of the source normalɛ( λ ) and sensitivity and response characteristic of the IR detector D ( λ ) can be expressed as d(T)=λ1λ2Mfalse(λ,Tfalse)ɛ(λ)D(λ)dλ …”
Section: Experimental Methodsmentioning
confidence: 99%
“…Spatial variation in the temperature over a bed surface was measured by the IR camera and compared with a point temperature measurement by thermocouples to calibrate the IRT measurement. The output signal [digital level (DL)] from the IR camera depends on the spectral black‐body radiation M ( λ , T ) emitted by the source at a given temperature T , the emissivity of the source normalɛ( λ ) and sensitivity and response characteristic of the IR detector D ( λ ) can be expressed as d(T)=λ1λ2Mfalse(λ,Tfalse)ɛ(λ)D(λ)dλ …”
Section: Experimental Methodsmentioning
confidence: 99%
“…For example, in a study using gold nanostars (GNSts) as a probe for in vivo imaging and photothermal therapy, Liu et al [96] characterized heating of the GNSts in vitro and temperature during heating was monitored using an infrared (IR) thermal imaging camera. Because calibration of IR thermal imagers can be quite complicated [97], further verification of temperatures using physical probes before and after heating was necessary. Using QD based thermometry may have simplified and improved their in vivo temperature measurements.…”
Section: Using Qd Photophysics For Thermometrymentioning
confidence: 99%
“…Radiometric thermal data consists of pixelated temperature information. Calibration of the thermal-RGB sensor was conducted using water [17] with an emissivity of 0.95-0.97, almost equal to that of plant leaves and apples surfaces. The water temperature was varied within a range of 10-50 • C in reference to typical FSTs.…”
Section: Thermal-rgb Imagery Based Fst Estimationmentioning
confidence: 99%