Image processing apparatus, method, and storage medium for maintaining linearity between an exposure intensity and density of an output image
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United States of America Patent
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Jun 27, 2017
Grant Date -
Jul 21, 2016
app pub date -
Jan 11, 2016
filing date -
Jan 21, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
An image processing apparatus that generates a halftone image to be used in a case where an image is formed on a printing medium by exposing a photoreceptor by intensity modulation of a light beam, having a multivalued dither processing unit configured to generate N-nary (N≧3) image from an input image by a dither method, a determination unit configured to determine whether a difference in pixel value between pixels adjacent to each other in an exposure scanning direction exceeds a predetermined limit value for each pixel of the N-nary image generated by the multivalued dither processing unit, and a correction unit configured to correct the pixel values of the adjacent pixels whose difference in pixel value has been determined to exceed the predetermined limit value so that the difference does not exceed the limit value.
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