Non-uniformity correction method and apparatus for imaging systems
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United States of America Patent
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Nov 27, 2001
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app pub date -
Nov 24, 1998
filing date -
Nov 24, 1998
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Abstract
An imaging system having an improved correction module is provided. The system has a detector array with a plurality of detectors that are arranged in rows and columns. Each detector generates a non-corrected data value. The system also includes a signal processing module, coupled to the detector array, for receiving the non-corrected data values and for correcting the non-corrected data values for errors that stem from non-uniformity in detector process and bias. The non-uniformity correction module has a first input for receiving the non-corrected data values, a second input for receiving one or more fitting coefficients, and a third input for receiving a correction order. Based on these inputs, the non-uniformity correction module generates a plurality of corrected data values corresponding to the received non-corrected data values.
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