| 摘要 |
An image processing system (10) includes a focal plane array (652) of image detectors (654), each of which produces a signal proportional to incident radiation. The image data signals are arranged in groups, such as rows or columns that are respectively associated with a plurality of select circuits (656) which sequentially select the signals for correction by an associated offset and gain correction circuit (658). The correction circuit includes a pair of shift registers (672, 694) for respectively storing data related to a desired gain correction and offset correction of the data image signal. Under control of a processor, the stored correction data is used to pass the image data signal through a selectively configured network of resistive elements (720, 722) to thereby correct the gain and offset of the signal.
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