DETERMINATION OF AN ABSOLUTE RADIOMETRIC VALUE USING BLOCKED INFRARED SENSORS

摘要

Various techniques are provided for using one or more shielded (e.g., blinded, blocked, and/or obscured) infrared sensors of a thermal imaging device. In one example, a method includes capturing a signal from a shielded infrared sensor that is substantially blocked from receiving infrared radiation from a scene. The method also includes capturing a signal from an unshielded infrared sensor configured to receive the infrared radiation from the scene. The method also includes determining an average thermographic offset reference for the shielded and unshielded infrared sensors based on the captured signal of the shielded infrared sensor. The method also includes determining an absolute radiometric value for the scene based on the average thermographic offset reference and the captured signal of the unshielded infrared sensor.

主权项

1. A method comprising:
capturing a signal from a shielded infrared sensor that is substantially blocked from receiving infrared radiation from a scene; capturing a signal from an unshielded infrared sensor configured to receive the infrared radiation from the scene; determining an average thermographic offset reference for the shielded and unshielded infrared sensors based on the captured signal of the shielded infrared sensor; and determining an absolute radiometric value for the scene based on the average thermographic offset reference and the captured signal of the unshielded infrared sensor.