Image processing apparatus, image processing method and image processing program
First Claim
1. An image processing apparatus comprising:
- a reducing unit that executes a reducing process for reducing the resolution of an image in image data to be processed;
a histogram generating unit that generates a histogram of a color space signal in a pixel area of M rows×
N columns (here M, N are one or larger integers) in the image on which the reducing process is applied by the reducing unit; and
a binarizing unit that executes a binarizing process on a pixel in the image on which the reducing process is applied by the reducing unit on the basis of the histogram generated by the histogram generating unit.
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Abstract
To provide a technology that can contribute to realization of both of reproduction of a fine line in low density and reduction of noise at an outline portion of a patch area of a uniform density, which could not be consistent in the related art. A reducing unit for executing a reducing process for reducing the resolution of an image in image data to be processed; a histogram generating unit for generating a histogram of a color space signal in a pixel area of M rows×N columns (here M, N are one or larger integers) in the image on which the reducing process is applied by the reducing unit; and a binarizing unit for executing a binarizing process on a pixel in the image on which the reducing process is applied by the reducing unit on the basis of the histogram generated in the histogram generating unit are provided.
27 Citations
20 Claims
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1. An image processing apparatus comprising:
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a reducing unit that executes a reducing process for reducing the resolution of an image in image data to be processed;
a histogram generating unit that generates a histogram of a color space signal in a pixel area of M rows×
N columns (here M, N are one or larger integers) in the image on which the reducing process is applied by the reducing unit; and
a binarizing unit that executes a binarizing process on a pixel in the image on which the reducing process is applied by the reducing unit on the basis of the histogram generated by the histogram generating unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An image processing method comprising:
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a reducing step that executes a reducing process for reducing the resolution of an image in image data to be processed;
a histogram generating step that generates a histogram of a color space signal in a pixel area of M rows×
N columns (here M, N are one or larger integers) in the image on which the reducing process is applied in the reducing step; and
a binarizing step that executes a binarizing process on a pixel in the image on which the reducing process is applied in the reducing step on the basis of the histogram generated in the histogram generating step. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An image processing program that causes a computer to execute a reducing step that executes a reducing process for reducing the resolution of an image in image data to be processed;
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a histogram generating step that generates a histogram of a color space signal in a pixel area of M rows×
N columns (here M, N are one or larger integers) in the image on which the reducing process is applied in the reducing step; and
a binarizing step that executes a binarizing process on a pixel in the image on which the reducing process is applied in the reducing step on the basis of the histogram generated in the histogram generating step. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification