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US 11,636,297 B2Granted
Image processing apparatus, image processing method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorsNaoya Takesue, Hisashi Ishikawa
Life of this patent
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AssigneeCanon Kabushiki Kaisha
InventorsNaoya Takesue, Hisashi Ishikawa
Estimating the term…
To enable highly accurate density unevenness correction while suppressing a reduction in productivity in printing accompanying correction value calculation for density unevenness correction. Based on an image obtained by scanning a chart including patches having uniform density for each tone value, a density characteristic of each nozzle is acquired. A non-ejectable nozzle that cannot eject ink normally is detected by analyzing a pattern for detecting the non-ejectable nozzle in the image obtained by scanning the chart. At the time of acquiring the density characteristic, the density characteristic is acquired based on a density measured value of an area of the image, which corresponds to a nozzle that is not detected as the non-ejectable nozzle.
An image processing apparatus for an image forming apparatus that prints an input image on a printing medium by using a print head including a plurality of printing elements, the image processing apparatus comprising:
An image processing method for an image forming apparatus that prints an input image on a printing medium by using a print head including a plurality of printing elements, the image processing method comprising:
A non-transitory computer-readable storage medium storing a program for causing a computer to perform an image processing method for an image forming apparatus that prints an input image on a printing medium by using a print head including a plurality of printing elements, the image processing method comprising:
Dependencies are inferred from the claim text.