Image processing apparatus for discriminating image characteristics using image signal information obtained in an image scanning operation
First Claim
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1. An image processing apparatus comprising:
- image input means for scanning an original document and generating a plurality of image signals representing an image of said original document;
first image discriminating means for discriminating first image characteristics of the original document image with respect to each pixel thereof, to obtain first discriminating results;
second image discriminating means for discriminating second image characteristics of said original document image with respect to each predetermined size block region of pixels thereof, to obtain second discrimination results;
memory means for storing said second discrimination results; and
image processing means for processing said plurality of image signals in accordance with said first and second image discriminating results obtained from a first scanning of said original document, and for processing image signals generated by subsequent scans of said original document using said first discrimination results from said subsequent scans and using said stored second discrimination results for said subsequent scans.
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Abstract
An image processing apparatus generates color image signals representing an image of a scanned original document. A series of image discriminating units are provided. An edge discrimination unit discriminates edge regions with respect to each pixel. Further discrimination units discriminate other image regions, such as half tone regions, white background regions, photograph regions, or color regions, with respect to each pixel block. Discriminating results are stored in a memory to be used for subsequent image scans.
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Citations
14 Claims
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1. An image processing apparatus comprising:
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image input means for scanning an original document and generating a plurality of image signals representing an image of said original document; first image discriminating means for discriminating first image characteristics of the original document image with respect to each pixel thereof, to obtain first discriminating results; second image discriminating means for discriminating second image characteristics of said original document image with respect to each predetermined size block region of pixels thereof, to obtain second discrimination results; memory means for storing said second discrimination results; and image processing means for processing said plurality of image signals in accordance with said first and second image discriminating results obtained from a first scanning of said original document, and for processing image signals generated by subsequent scans of said original document using said first discrimination results from said subsequent scans and using said stored second discrimination results for said subsequent scans. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image processing apparatus comprising:
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an image scanner scanning an original document and generating a plurality of image signals representing an image of said original document; a first image discriminating circuit discriminating first image characteristics of the original document image with respect to each pixel thereof, to obtain first discriminating results; a second image discriminating circuit discriminating second image characteristics of said original document image with respect to each predetermined size block region of pixels thereof, to obtain second discrimination results; a memory storing said second discrimination results; and at least one image processor for processing said plurality of image signals in accordance with said first and second image discriminating results obtained from a first scanning of said original document, and for processing image signals generated by subsequent scans of said original document using said first discrimination results from said subsequent scans and using said stored second discrimination results for said subsequent scans. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification