Image processing apparatus, method, and product for converting image data into fewer gradations based on total value of pixels in a group except for a detected pixel having a specific value
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United States of America Patent
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Sep 29, 2015
Grant Date -
Sep 25, 2014
app pub date -
Feb 21, 2014
filing date -
Mar 22, 2013
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Abstract
An image processing apparatus capable of converting input image data into image data expressing a dot pattern cell by cell includes a detection unit configured to detect a pixel having a specific pixel value in the input image data, and a determination unit configured to determine an output value of a pixel included in each cell by arranging as many print pixels as a number of print pixels according to a total value of pixel values of a pixel group including pixels included in a cell except the pixel detected by the detection unit on any of the pixels in the pixel group cell by cell.
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