Thermal imaging is used to measure the thermal radiation of objects and thus their surface temperature. This works not just on objects, but also on humans and animals. In industry, for example, thermal imaging is used to determine the quality of the thermal insulation of housing. In the medical field, thermal imaging is used to measure skin temperature and to draw conclusions about possible diseases. Temperatures are recorded using thermal cameras. These look and are operated much like modern video cameras. The difference, however, is that they record the corresponding temperature value for each recorded image pixel. In this way, temperatures can be determined from a distance without direct contact with the respective object or living creature.