Image processing apparatus, image forming apparatus, image processing method, and storage medium
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United States of America Patent
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May 21, 2013
Grant Date -
May 31, 2012
app pub date -
Nov 25, 2011
filing date -
Nov 29, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Unevenness in density (line noise) resulting from color misregistration among RGB components in a halftone region or a line screen region is suppressed. With respect to a document that is discriminated as a printed photo document or a text/printed photo document that includes black halftones by a document type discrimination section, or to a region segmented into a black halftone region by a segmentation section, a non-uniform image suppressing operation mode is executed. In the non-uniform image suppressing operation mode, a black generation and under color removal section does not carry out a black generation and under color removal process on a pixel in which a minimum value of the image data of the plurality of color components is at least equal to or less than a predetermined threshold.
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