Infrared imaging device and method of updating fixed pattern noise data

An infrared imaging device comprising:

• an infrared detector including a plurality of detector elements that detect incident infrared rays;
• a noise correction processing unit that subtracts fixed pattern noise data from a detection signal of the infrared rays detected by the plurality of detector elements, to thereby remove fixed pattern noise from the infrared detection signal;
• and
• a noise data update processing unit including a signal component amount calculation unit that calculates an amount of a signal component dependent on the infrared rays incident on the infrared detector included in the infrared detection signal, on the basis of multiple times of infrared detection signals detected by the infrared detector, a fixed pattern noise calculation unit that calculates an amount of a fixed pattern noise component on the basis of the infrared detection signal and the calculated amount of a signal component, and a data update unit that updates the fixed pattern noise data with the calculated amount of a fixed pattern noise component,
• wherein the signal component amount calculation unit calculates dispersion or standard deviation of multiple times of the infrared detection signals detected by each detector element to be processed, and calculates the amount of a signal component on the basis of the calculated dispersion or standard deviation.