Reading of Thermometers Using a Video Camera

In the proposed paper a possibility of automation of calibration of liquidin-glass thermometers is discussed. Temperature readings are taken with the use of a measuring system that consists of a standard calibration facility, the video camera, and the personal computer that executes the program for image processing and analyses. Once the reading of temperature is extracted from an acquired image, this value can be passed to any other data processing, which includes the comparison with the values from the reference thermometer and determination of total uncertainty. Data achieved in this way can be directly used to prepare a calibration