Image analysis – Image enhancement or restoration – Image filter
Patent
1996-01-11
1998-10-06
Rogers, Scott
Image analysis
Image enhancement or restoration
Image filter
382266, 382274, 382168, 382264, 358445, 358446, 358447, 358461, G06T 500, G06T 540, H04N 1409, G06K 944
Patent
active
058189734
ABSTRACT:
An apparatus for digital correction in an image system is disclosed. The present invention comprises pre-processing means for automatically adjusting dc gain of an image signal; an analogue-to-digital converter for converting the adjusted image signal to a digital signal; bit-enhancing means for generating a bit-enhanced signal; and post-processing means for generating an image code by processing the bit-enhanced signal through highlight, shadow, Gamma and shading correction. The present invention provides an improved apparatus for correcting the photo-response non-uniformity, avoiding image defect, without sacrificing the accuracy of the image system.
REFERENCES:
patent: 5561724 (1996-10-01), Kido et al.
Rogers Scott
Umax Data Systems Inc.
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