Image processing apparatus, computer product, and image processing method
First Claim
1. An image processing apparatus comprising:
- an image-quality-mode receiving unit that receives a selection of an image quality mode for forming an image based on image data;
a first gradation converting unit that performs a gradation conversion of the image data by setting a gradation conversion parameter based on the image quality mode;
a feature extracting unit that performs a gradation conversion of a feature-extraction threshold based on the gradation conversion parameter, and extracts, based on the feature-extraction threshold on which the gradation conversion is performed, a feature amount from the image data on which the gradation conversion is performed; and
a second gradation converting unit that performs a gradation conversion of the image data by setting a gradation conversion parameter based on a result of extracting the feature amount and the image quality mode.
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Abstract
An image-quality-mode receiving unit receives a selection of an image quality mode for forming an image based on image data. A first gradation converting unit performs a gradation conversion of the image data by setting a gradation conversion parameter based on the image quality mode. A feature extracting unit performs a gradation conversion of a feature-extraction threshold based on the gradation conversion parameter, and extracts, based on the feature-extraction threshold after the gradation conversion, a feature amount from the image data after the gradation conversion. A second gradation converting unit performs a gradation conversion of the image data by setting a gradation conversion parameter based on a result of extracting the feature amount and the image quality mode.
15 Citations
9 Claims
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1. An image processing apparatus comprising:
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an image-quality-mode receiving unit that receives a selection of an image quality mode for forming an image based on image data; a first gradation converting unit that performs a gradation conversion of the image data by setting a gradation conversion parameter based on the image quality mode; a feature extracting unit that performs a gradation conversion of a feature-extraction threshold based on the gradation conversion parameter, and extracts, based on the feature-extraction threshold on which the gradation conversion is performed, a feature amount from the image data on which the gradation conversion is performed; and a second gradation converting unit that performs a gradation conversion of the image data by setting a gradation conversion parameter based on a result of extracting the feature amount and the image quality mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image processing method comprising:
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receiving a selection of an image quality mode for forming an image based on image data; performing a gradation conversion of the image data by setting a gradation conversion parameter based on the image quality mode; feature extracting including performing a gradation conversion of a feature-extraction threshold based on the gradation conversion parameter; and extracting, based on the feature-extraction threshold on which the gradation conversion is performed, a feature amount from the image data on which the gradation conversion is performed; and performing a gradation conversion of the image data by setting a gradation conversion parameter based on a result of extracting the feature amount and the image quality mode.
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9. A computer-readable recording medium that stores an image processing program, wherein the image processing program causes a computer to execute:
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receiving a selection of an image quality mode for forming an image based on image data; performing a gradation conversion of the image data by setting a gradation conversion parameter based on the image quality mode; feature extracting including performing a gradation conversion of a feature-extraction threshold based on the gradation conversion parameter; and extracting, based on the feature-extraction threshold on which the gradation conversion is performed, a feature amount from the image data on which the gradation conversion is performed; and performing a gradation conversion of the image data by setting a gradation conversion parameter based on a result of extracting the feature amount and the image quality mode.
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Specification