Moreover, as the instrument is non-contact, it does not affect the result of the measurement and can be carried out remotely. The fact that IRT is a non-contact technique is very important in this field, because this means that it is a painless procedure. IRT provides particular advantages in the medical and veterinary field, as it provides accurate readings without invasive procedures. Thus, it does not intrude upon or affect the target in any way. Thus, it is suitable for prolonged and repeated use. IRT has none of the harmful radiation effects of technologies, such as X-ray imaging. IRT is in real time, which enables not only high-speed scanning of stationary targets, but also acquisition from fast-moving targets and from fast-changing thermal patterns. IRT provides two-dimensional thermal images, which make a comparison between areas of the target possible. In this way, the temperature of extremely hot objects or dangerous products, such as acids, can be measured safely, keeping the user out of danger. IRT is a non-contact technology: the devices used are not in contact with the source of heat, i.e., they are non-contact thermometers. In general, the main advantages of IRT are the following: IRT has many advantages over other technologies. The result is a false-color image called a thermogram. Images acquired using infrared cameras are converted into visible images by assigning a color to each infrared energy level. The difference between a visible image and an infrared image is that the visible image is a representation of the reflected light on the scene, whereas in the infrared image, the scene is the source and can be observed by an infrared camera without light. Most advanced devices include an array of sensors to produce a detailed infrared image of the scene. The most basic infrared device is a pyrometer, which produces a single output using a single sensor. Infrared measuring devices acquire infrared radiation emitted by an object and transform it into an electronic signal. Thus, infrared measuring devices are required to acquire and process this information. The human eye cannot see this type of radiation. Any object at a temperature above absolute zero ( i.e., T > 0 K) emits infrared radiation. It is based on infrared radiation (below red), a form of electromagnetic radiation with longer wavelengths than those of visible light. Infrared thermography (IRT) is a science dedicated to the acquisition and processing of thermal information from non-contact measurement devices.