US Patent 11835389 Temperature measuring device and temperature measuring method

A temperature measuring device and a temperature measuring method are provided. The temperature measuring device includes a processing module, a first image capturing module and a second image capturing module. The processing module calculates a second reference area, a third temperature measuring area and a fourth temperature measuring area of a second image information according to a first reference area, a first temperature measuring area and a second temperature measuring area of a first image information, respectively. The processing module obtains a first detected temperature value of a test subject in the third temperature measuring area.