Image analysis – Image enhancement or restoration – Variable threshold – gain – or slice level
Reexamination Certificate
2005-11-22
2005-11-22
Do, Anh Hong (Department: 2624)
Image analysis
Image enhancement or restoration
Variable threshold, gain, or slice level
C382S312000, C382S318000
Reexamination Certificate
active
06968093
ABSTRACT:
A linear pixel-array processing systems uses a combination of digital and analog signal processing techniques to calibrate the gain and offset of each pixel in the analog domain. A plurality of fixed gain and offset values are applied in the analog domain to adjust the gain and offset of each pixel at high speeds (on the order of 25–50 MHz). By adjusting the gain and offset in the analog domain, the dynamic range of pixel conversion is improved such that the conversion range is fully utilized (over 90%, on the order of 95%–99%). The gain and offset values are determined with an algorithmic calibration routine that corrects for non-ideal effects in the signal path. A single processing channel can be multiplexed to process multiple pixel arrays to provide for a cost effective solution. In higher speed systems, the single processing channel can be extended to multiple processing channels for improved throughput.
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Boisvert David M.
Clark Joseph D.
LeBoeuf II Robert James
Maigret Michael Joseph
McMahon Andrew Kenneth John
Do Anh Hong
Eastman Kodak Company
Watkins Peyton C.
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