Infrared and thermal imaging solutions are gaining popularity in a number of applications across the globe especially current situation of COVID19. It scans, detects, records, and produces an analysis of skin surface temperature patterns mostly body heat. 
Thermal cameras are based upon the science of energy. All the living objects emit infrared energy or heat. The quantity of the radiation emitted is proportional to the heat of the entire object. These thermal cameras use sensitive heat sensors which records minute difference in temperature. Once these cameras gather the infrared radiation from objects in a particular environment it maps the image to minimum 10 points of the temperature probing simultaneously.
Heat generated by the body of a person creates a 2D colored image with differing temperature levels. When a person stands before the cameras, hotter objects are highlighted with a different color palette than the rest on the screen.
These cameras are calibrated to detect abnormal body temperature. A higher resolution camera scan offers more detailed images as every pixel of the image has a temperature associated with it.
Nowadays thermal cameras are being used to screen higher body temperature caused due to the Corona Virus and related temperature anomalies. It has been proven to be important in airports, factories, malls and where it can quickly and accurately scan all incoming or outgoing people for higher temperatures. It is also important to install such cameras where there are large numbers of footfalls.
Thermal scanning is a very compact method for the identification and visualization of heat patterns. Thermal cameras have also migrated into other fields such as industrial applications, surveillance applications to monitor critical infrastructure, construction to detect flaws in a building, and agriculture to track crop health, among many other applications.
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