Patent ID: 9167179
Filing Date: 2015-10-20
Classification: G01J,G01N,H04N

Abstract:
1. A method of calibrating a microbolometer focal plane array (MFPA) having detector elements and that reside in a thermal camera that has a processing unit that is operably coupled to an external computer and a shutter, comprising: determining, in the processing unit, detector non-uniformity corrections (NUCs) for corresponding ones of the detector elements based on reference voltages from the MFPA; applying the detector NUCs to the detector elements as coarse corrections that establish a coarse calibration; sending the detector NUCs to the external computer; in a first measurement step: calculating, in the external computer, fine corrections based on the collected image data DL sending the fine corrections from the external computer to the processor unit and applying the fine corrections to the detector elements to establish a fine calibration.