Image processing apparatus with color replacement with achromatic colors, and image processing method and storage medium thereof
AssigneeCanon Kabushiki Kaisha
InventorTakuya Inoue
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Abstract
Provided is an image processing apparatus comprising: at least one controller, having at least one processor which executes instructions stored in at least one memory and/or at least one circuitry, being configured to: generate intermediate data by analyzing PDL data; generate a color conversion table based on a predetermined color conversion method; rewrite color information contained in the intermediate data by using the color conversion table; and perform rendering based on the intermediate data after the rewrite of the color information.
Claims11
An image processing apparatus comprising:
- one or more controllers, having one or more processors which execute instructions stored in one or more memories and/or one or more circuitries, being configured to:
- generate intermediate data on a page-by-page basis by analyzing PDL data;
- obtain color values of colors used in a page of the intermediate data;
- count the number of the obtained colors;
- determine achromatic color values respectively corresponding to the color values of colors used in the page based on the counted result;
- generate intermediate data in which the obtained color values are rewritten to the determined achromatic color values;
- and
- perform rendering based on the generated intermediate data.
An image processing method comprising:
- generating intermediate data on a page-by-page basis by analyzing PDL data;
- obtaining color values of colors used in a page of the intermediate data;
- counting the number of the obtained colors;
- determining achromatic color values respectively corresponding to the color values of colors used in the page based on the counted result;
- generating intermediate data in which the obtained color values are rewritten to the determined achromatic color values;
- and
- performing rendering based on the generated intermediate data.
A non-transitory computer readable storage medium storing a program which causes a computer to perform an image processing method, the image processing method comprising:
- generating intermediate data on a page-by-page basis by analyzing PDL data;
- obtaining color values of colors used in a page of the intermediate data;
- counting the number of the obtained colors;
- determining achromatic color values respectively corresponding to the color values of colors used in the page based on the counted result;
- generating intermediate data in which the obtained color values are rewritten to the determined achromatic color values;
- and
- performing rendering based on the generated intermediate data.
Dependencies are inferred from the claim text.