Image processing device, image processing method and recording medium
AssigneeCanon Kabushiki Kaisha
InventorNaoki Sumi
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Abstract
The present invention is to provide an image processing device and an image processing method which can perform correction so as to suppress variation in color in consideration of color rendering properties of a light source when preparing data for image formation. In an image processing device according to one embodiment of the present invention, an output density correction value selection unit determines an output density correction value of CMY inks with hue of Gy ink, being an achromatic color material of high light source dependence as a reference. Based on the determined output density correction value, the balance of the CMY inks is corrected.
Claims13
An image processing device generating image data for image formation with an image forming unit which has a function of outputting a basic color material and outputting an achromatic color material of high light source dependence, wherein the achromatic color material of high light source dependence is manufactured by mixing basic color materials, and wherein with respect to the achromatic color material of high light source dependence, a difference between a first color measured under a first light source and a second color measured under a second light source different from the first light source is greater than a predetermined value, the image processing device comprising:
- a determination unit configured to determine an output density correction value of the basic color material using as a reference the achromatic color material of high light source dependence which is manufactured by mixing basic color materials;
- and
- a generation unit configured to generate the image data being by performing density correction using the determined output density correction value.
An image processing method generating image data for image formation with an image forming unit which has a function of outputting a basic color material and outputting an achromatic color material of high light source dependence, wherein the achromatic color material of high light source dependence is manufactured by mixing basic color materials, and wherein with respect to the achromatic color material of high light source dependence, a difference between a first color measured under a first light source and a second color measured under a second light source different from the first light source is greater than a predetermined value, the image processing method comprising the step of:
- determining an output density correction value of the basic color material using as a reference the achromatic color material of high light source dependence which is manufactured by mixing basic color materials,
- performing density correction using the determined output density correction value;
- and
- generating the image data by the density correction.
A non-transitory computer-readable storage medium having computer-executable instructions for performing a method, the method being an image processing method generating image data for image formation with an image forming unit which has a function of outputting a basic color material and outputting an achromatic color material of high light source dependence, wherein the achromatic color material of high light source dependence is manufactured by mixing basic color materials, and wherein with respect to the achromatic color material of high light source dependence, a difference between a first color measured under a first light source and a second color measured under a second light source different from the first light source is greater than a predetermined value, the method comprising the steps of:
- determining an output density correction value of the basic color material using as a reference the achromatic color material of high light source dependence which is manufactured by mixing basic color materials;
- performing density correction using the determined output density correction value;
- and
- generating the image data by the density correction.
Dependencies are inferred from the claim text.