| 摘要 |
An apparatus and method for reducing fixed pattern noise in a planar array that includes an array of image responsive detectors (14), a dithering mechanism (18) for dithering an observed image relative to the array, a high pass filter (48), and an image restorer (50). The fixed pattern noise in an observed image is reduced by dithering the observed image across a plurality of detectors forming a planar array, filtering the detector responses with the high pass filter, and passing the filtered signals through the image restorer. A correcting element can be used to iteratively update the fixed pattern noise estimate. In addition, a voter or a frame averager can be included to reduce errors that might adversely affect the fixed pattern noise estimate.
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