Method of shutterless non-uniformity correction for infrared imagers
First Claim
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 image, the one of more neighbor pixels being adjacent to the first pixel in the input image array;
providing a correction array having a plurality of correction pixel values;
generating a corrected image array by adding the first pixel value to a correction pixel value in the correction array;
detecting edges in the corrected image array;
masking the detected edges in the corrected image array;
updating, by the processor, the correction array, for each correction pixel value in the correction array; and
providing an output image array based on the correction array and the input image array.
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Abstract
A method of correcting an infrared image including 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 pixel with one or more neighbor pixel values. The first pixel and the one or more neighbor pixels are associated with an object in the image. The method includes providing a correction array having a plurality of correction pixel values, generating a corrected image array by adding the first pixel value to a correction pixel value in the correction array, and detecting edges in the corrected image array. The method also includes masking the detected edges in the corrected image array, updating the correction array, for each correction pixel value in the correction array and providing an output image array based on the correction array and the input image array.
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Citations
10 Claims
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1. A method of correcting an infrared image, the method comprising:
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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 image, the one of more neighbor pixels being adjacent to the first pixel in the input image array; providing a correction array having a plurality of correction pixel values; generating a corrected image array by adding the first pixel value to a correction pixel value in the correction array; detecting edges in the corrected image array; masking the detected edges in the corrected image array; updating, by the processor, the correction array, for each correction pixel value in the correction array; and providing an output image array based on the correction array and the input image array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification