Method and apparatus for real-time background illumination subtraction
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United States of America Patent
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Dec 17, 1996
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N/A
app pub date -
Oct 25, 1994
filing date -
Oct 25, 1994
priority date (Note) -
Expired
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Abstract
The present invention is directed to methods and apparatus for accurately detecting light energy of a signal of interest (e.g., a laser pulse) even when the signal-to-noise ratio is relatively low. The present invention is further directed to accurate detection of a signal of interest even when either or both the signal of interest and background illumination vary across plural pixels of an imaging an array. For example, a signal of interest can be accurately detected even in the presence of pixel response non-uniformity and fixed pattern noise, or when the incident signal of interest is not confined laterally to a single pixel.
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