Image reading apparatus
Number of patents in Portfolio can not be more than 2000
United States of America
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Feb 18, 2020
Grant Date -
May 9, 2019
app pub date -
Nov 27, 2018
filing date -
Nov 27, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An original image is read as an aggregate of a plurality of pixels in which adjacent pixels have different colors (R, G, and B) in a main scanning direction and in a sub-scanning direction, and the read pixels of the respective colors are stored in a line memory in association with information on relative positions of the pixels with respect to another pixel. Then, the stored pixels are sorted so that pixels having the same color are adjacent to each other, and an abnormal pixel (dust) not present in the original image is detected based on the state of the sorted pixels. With this, the dust not present in the original image is detected without increasing the cost, and the dust is corrected without forming a conspicuous trace of correction.
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Family
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Cited Art Landscape
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