What is Thermography?
Thermography is the use of thermal infrared energy emitted by various surfaces to create an image using a camera sensitive to thermal infrared photons. Depending on the camera, sensitivity and resolution, it shows the relative temperature of that surface. Since surfaces differ in the way they radiate thermal energy, it does require some understanding of physics, underlying structure, and device operation to meaningfully extract the information contained in a thermographic image.
Consulting PG 