Image analysis – Image enhancement or restoration – Variable threshold – gain – or slice level
Reexamination Certificate
2005-08-05
2009-10-06
Tucker, Wesley (Department: 2624)
Image analysis
Image enhancement or restoration
Variable threshold, gain, or slice level
C382S273000, C382S282000, C702S191000, C358S463000
Reexamination Certificate
active
07599572
ABSTRACT:
An apparatus for analyzing the broadband noise content of a digital image comprising the following: a means of automatically identifying regions of originally constant color in the image by analysis of the variance of pixel values of regions of the image; a means of automatically detecting and discarding regions deemed to be unrepresentative of the true noise content of an image, including under- and over- exposed regions; a means of allowing the user to manually select some or all required constant color regions if desired; and, a means of analyzing such constant color regions to generate a parametric or non-parametric model of the noise in the image, including frequency characteristic within and between channels and other characteristics such as phase which might describe structured noise.
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Adobe Systems Incorporated
Kowert Robert C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Tucker Wesley
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