Patent ID: 11937009
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 9:
10. An infrared imaging device, comprising:
a thermal image sensor to receive infrared light and output a signal corresponding to the infrared light;
a thermal image generator to generate a single thermal image on a basis of the signal from the thermal image sensor;
correction coefficient calculation circuitry configured to calculate a plurality of correction coefficients included in a correction equation for converting pixel values of pixels included in the single thermal image into target values in which streak noise extending from one end to another end of the single thermal image is reduced; and
thermal image correction circuitry configured to correct a thermal image generated by the thermal image generator by using the plurality of correction coefficients,
wherein the correction coefficient calculation circuitry calculates the plurality of correction coefficients on a basis of difference between pixel values of pixels arranged in a direction in which the streak noise occurs in the single thermal image,
wherein:
the pixels arranged in the direction in which the streak noise occurs include three or more pixels having different pixel values, and
the correction coefficient calculation circuitry calculates the plurality of correction coefficients without using a largest or smallest pixel value of the three or more different pixel values.