US Patent No. 10,462,388

METHOD OF SHUTTERLESS NON-UNIFORMITY CORRECTION FOR INFRARED IMAGERS


Patent No. 10,462,388
Issue Date October 29, 2019
Title Method Of Shutterless Non-uniformity Correction For Infrared Imagers
Inventorship John R. Bailey, Merritt Island, FL (US)
Rustin W. Allred, West Melbourne, FL (US)
Assignee

Claim of US Patent No. 10,462,388

1. A method of correcting an infrared image, the method comprising:providing a processor;
receiving the infrared image from a camera, the infrared image comprising a plurality of pixels arranged in an input image array, a first pixel in the plurality of pixels having a first pixel value and one or more neighbor pixels with one or more neighbor pixel values, wherein the first pixel and the one or more neighbor pixels are associated with an object in the infrared image, the one or more neighbor pixels being adjacent to the first pixel in the input image array;
processing the infrared image to generate a processed image;
determining, by the processor, whether the processed image is a first frame;
in the event that the processed image is the first frame:
initializing a correction table to an initialized correction table;
initializing a mean image counter to zero;
determining, by the processor, whether the camera is moving;
in the event that the camera is moving:
determining whether a motion of the camera is greater than or equal to a motion threshold;
in the event that the motion of the camera is greater than or equal to the motion threshold:
updating the correction table using a motion-based algorithm; and
providing an output image based on the updated correction table using the motion-based algorithm and the processed image.