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US 2008/0075387 A1Published application
Image processing apparatus, image processing method, program, and computer-readable medium
AssigneeCanon Kabushiki Kaisha
InventorHiroyuki SHINBATA
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Abstract
An image processing apparatus generates, from original image data, low- and high-frequency components of the original image data. By smoothing at least some of the high-frequency components, the second high-frequency component is generated. Image data is generated on the basis of the generated second high-frequency component.
Claims8
An image processing apparatus comprising:
- high-frequency component generating means for generating, from original image data, a high-frequency coefficient for a plurality of frequency bands;
- noise attenuation means for smoothing the high-frequency coefficient generated by said high-frequency component generating means to generate a second high-frequency coefficient;
- and
- processed image generating means for generating image data by restoring the second high-frequency coefficient.
1 more element
An image processing method comprising:
- a high-frequency component generating step of generating, from original image data, a high-frequency coefficient for a plurality of frequency bands;
- a high-frequency component smoothing step of smoothing the high-frequency coefficient generated in the high-frequency component generating step;
- and
- a processed image generating step of restoring the high-frequency coefficient smoothed in the high-frequency component smoothing step.
1 more element
Dependencies are inferred from the claim text.