Patent Document ID: 7795578
Application ID: 12293190
Patent Status: 1

Claim One:
1. A method for correcting non-uniformity in signal level in different image points comprised in an IR-camera, based on a scene that is observed during movement in time of detector elements, of a camera in which the detector elements are arranged and/or of the scene, with deviating output signals for the same energy in the scene measured with different detector elements being corrected so that they provide essentially the same output signal, the method comprising: measuring the movement with micro-mechanical gyros that measure angular velocity parallel to and perpendicular to an optical axis of the scene, coordinating the measured movement with an associated image, calculating a difference between a most recent image and an immediately preceding image or calculating an average value of a plurality of preceding images as offset parameters, updating the offset parameters by correction of previous offset parameters with most recent offset parameters, and correcting the most recent image for static noise by applying a most recently produced offset parameters to the most recent image.