Image processing apparatus, image processing method and storage medium
AssigneeCanon Kabushiki Kaisha
InventorsRyosuke Otani, Hisashi Ishikawa
Life of this patent
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Abstract
An image processing apparatus that generates image data to be output to an image forming apparatus printing an image, and includes: a generation unit configured to generate, based on an input image, first generation amount data indicating a generation amount of each of one or more kinds of ink dot for each pixel and second generation amount data indicating a generation amount of a blank dot for which the ink dot is not formed for each pixel; and a processing unit configured to determine a dot arrangement pattern indicating an arrangement of each of the one or more kinds of ink dot by performing quantization processing using the first generation amount data and the second generation amount data.
Claims21
An image processing apparatus that generates image data to be output to an image forming apparatus printing an image by an ink dot formed by ejecting ink onto a printing medium, the image processing apparatus comprising:
- one or more memories storing instructions;
- one or more processors configured to execute the instructions to cause the image processing apparatus to function as:
- a generation unit configured to generate, based on an input image, first generation amount data indicating a tone value of each of at least two or more kinds of ink dot corresponding to the ink for each pixel and second generation amount data indicating a tone value of a blank dot for which the ink dot is not formed for each pixel;
- a first determination unit configured to determine a blank dot arrangement pattern indicating an arrangement of the blank dot prior to determining an arrangement of the ink dot by using the generated second generation amount data indicating the tone value of the blank dot;
- and
- a second determination unit configured to determine an ink dot arrangement pattern indicating the arrangement of the ink dot by using the determined blank dot arrangement pattern and the first generation amount data so that the ink dot arrangement pattern does not overlap the determined blank dot arrangement pattern on the printing medium.
A method of generating image data to be output to an image forming apparatus printing an image by an ink dot formed by ejecting ink onto a printing medium, the method comprising:
- generating, based on an input image, first generation amount data indicating a tone value of each of at least two or more kinds of ink dot corresponding to the ink for each pixel and second generation amount data indicating a tone value of a blank dot for which the ink dot is not formed for each pixel;
- determining a blank dot arrangement pattern indicating an arrangement of the blank dot prior to determining an arrangement of the ink dot by using the generated second generation amount data indicating the tone value of the blank dot;
- and
- determining an ink dot arrangement pattern indicating the arrangement of the ink dot by using the determined blank dot arrangement pattern and the first generation amount data so that the ink dot arrangement pattern is determined so as does not to overlap the determined blank dot arrangement pattern on the printing medium.
A non-transitory computer-readable storage medium storing a program for causing a computer to perform a method of generating image data to be output to an image forming apparatus printing an image by an ink dot formed by ejecting ink onto a printing medium, the method comprising:
- generating, based on an input image, first generation amount data indicating a tone value of each of at least two or more kinds of ink dot corresponding to the ink for each pixel and second generation amount data indicating a tone value of a blank dot for which the ink dot is not formed for each pixel;
- determining a blank dot arrangement pattern indicating an arrangement of the blank dot prior to determining an arrangement of the ink dot by using the generated second generation amount data indicating the tone value of the blank dot;
- and
- determining an ink dot arrangement pattern indicating the arrangement of the ink dot by using the determined blank dot arrangement pattern and the first generation amount data so that the ink dot arrangement pattern does not to overlap the determined blank dot arrangement pattern on the printing medium.
Dependencies are inferred from the claim text.