I'm looking at conducting a thermographic survey of a building to identify thermal bridging etc. There seem to be two options when taking a series of thermal images. The first is to let the camera automatically set the temperature range for each image. This gives a nice rainbow range of colours and makes thermal bridging more obvious. The second option is to fix the temperature range for all of the images. This allows the images to be directly compared to one another, but can mean the images are more bland since the fixed range is likely to be wider than the variable range.
Which is the best approach?
Netter have the camera automatically set the scale as long as you know the latter.
In this way you increase the thermal resolution.
Basically, each thermal image is a combination of no. of pixels values, we can read temperature value at each pixel of the image. The measurement of temperature values from the thermal camera depends on the distance from the object, emissivity of the object, ambient temperature, and so on. You can go through my published research articles, these all articles are for rotating machines, in which the temperature value of increasing as the load of the motor increase.
Choudhary, Anurag, Tauheed Mian, and Shahab Fatima. "Convolutional neural network-based bearing fault diagnosis of rotating machine using thermal images." Measurement 176 (2021): 109196.
Mian, Tauheed, Anurag Choudhary, and Shahab Fatima. "A sensor fusion-based approach for bearing fault diagnosis of the rotating machine." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability (2021): 1748006X211044843.
Choudhary, Anurag, Deepam Goyal, and Shimi Sudha Letha. "Infrared thermography-based fault diagnosis of induction motor bearings using machine learning." IEEE Sensors Journal 21, no. 2 (2020): 1727-1734.
you can go through this review paper which provides useful information related to your concern
Bagavathiappan, Subramaniam, B. B. Lahiri, T. Saravanan, John Philip, and T. Jayakumar. "Infrared thermography for condition monitoring–A review." Infrared Physics & Technology 60 (2013): 35-55.
You can also read the book
Astarita, Carlomagno: Infrsared thermography for convective heat transfer, Springer 2013.
Good luck
Sorry, the title is:
Infrsared thermography for Thermo-Fluid-Dynamics
The other title refers to a paper, free access, pubblished on 2010 in Experiments in fluids
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