Image analysis – Histogram processing – With a gray-level transformation
Reexamination Certificate
2004-05-21
2008-09-16
Mehta, Bhavesh (Department: 2624)
Image analysis
Histogram processing
With a gray-level transformation
C382S274000
Reexamination Certificate
active
07426300
ABSTRACT:
The present invention relates to a technique implementing a density adjustment fitted to an image, concretely, an image processing apparatus for (1) judging the kind of a read image with a high accuracy, and (2) producing an arbitrary γ curve. The apparatus includes: a histogram calculation section for calculating a histogram of an image; a highlight part detection section for detecting a highlight part from the histogram; a shadow part detection section for detecting a shadow part from the histogram; a γ curve production section for producing a γ curve by using γ values corresponding to each of the highlight part and the shadow part, both obtained on detection results of the highlight part detection section and the shadow part detection section, respectively; and a density adjustment section for performing a density adjustment of an image on the γ curve produced by the γ curve production section.
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A Japanese Office Action (and English translation thereof) Dated Apr. 30, 2008, issued in a counterpart Japanese Application.
Ge Yuzhen
Konica Minolta Business Technologies Inc.
Mehta Bhavesh
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