Image processing apparatus, image processing method, and program for generating a halftone image data
First Claim
1. An image processing apparatus for generating halftone image data used for an image forming apparatus which forms an image based on the halftone image data by superimposing n (n≥
- 2) records on a same region in a recording medium, the image processing apparatus comprising;
a memory that holds threshold matrix characteristic information related to a threshold matrix characteristic representing a dispersity of a dot pattern of each tone value obtained when dithering is performed using a threshold matrix; and
one or more circuitry for causing the image processing apparatus to function as;
a setting unit configured to set recording data indicating an amount of recording for n recording scans by dividing values of respective pixels in an image indicated by image data for the n recording scans based on the threshold matrix characteristic information; and
a halftoning unit configured to perform dithering using the threshold matrix on the recording data for each of the n records to generate the halftone image data.
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Accused Products
Abstract
An image processing apparatus for forming an image by superimposing n (n≥2) records on a same region in a recording medium includes: a holding unit configured to hold a threshold matrix characteristic representing a dispersity of a dot pattern of each tone obtained when dithering is performed using a threshold matrix; a setting unit configured to set recording data for n recording scans by dividing image data for the n recording scans based on the threshold matrix characteristic; and a halftoning unit configured to perform dithering using the threshold matrix on the recording data for each of the n records.
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Citations
20 Claims
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1. An image processing apparatus for generating halftone image data used for an image forming apparatus which forms an image based on the halftone image data by superimposing n (n≥
- 2) records on a same region in a recording medium, the image processing apparatus comprising;
a memory that holds threshold matrix characteristic information related to a threshold matrix characteristic representing a dispersity of a dot pattern of each tone value obtained when dithering is performed using a threshold matrix; and one or more circuitry for causing the image processing apparatus to function as; a setting unit configured to set recording data indicating an amount of recording for n recording scans by dividing values of respective pixels in an image indicated by image data for the n recording scans based on the threshold matrix characteristic information; and a halftoning unit configured to perform dithering using the threshold matrix on the recording data for each of the n records to generate the halftone image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- 2) records on a same region in a recording medium, the image processing apparatus comprising;
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19. A non-transitory computer-readable storage medium storing a program to cause a computer to perform an image processing method for generating halftone image data used for an image forming apparatus which forms an image based on the halftone image data by superimposing n (n≥
- 2) records on a same region in a recording medium, the method comprising;
holding threshold matrix characteristic information related to a threshold matrix characteristic representing a dispersity of a dot pattern of each tone obtained when dithering is performed using a threshold matrix; setting recording data for n recording scans by dividing values of respective pixels in an image indicated by image data for the n recording scans based on the threshold matrix characteristic information; and performing dithering using the threshold matrix on the recording data for each of the n records to generate the halftone image data.
- 2) records on a same region in a recording medium, the method comprising;
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20. An image processing method for forming an image, the method comprising:
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holding threshold matrix characteristic information related to a threshold matrix characteristic representing a dispersity of a dot pattern of each tone obtained when dithering is performed using a threshold matrix; setting recording data for n recording scans by dividing values of respective pixels in an image indicated by image data for the n recording scans based on the threshold matrix characteristic information; and performing dithering using the threshold matrix on the recording data for each of the n records to generate halftone image data used by an image forming apparatus which forms an image based on the halftone image data by superimposing n (n≥
2) records on a same region in a recording medium.
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Specification