Image processing apparatus, image processing method, and non-transitory computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorYuichi Nakada
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Abstract
The present invention acquires a local enlargement ratio in an image transformed based on a transformation parameter and then acquires a transformed image which is a captured image transformed based on the transformation parameter. The present invention acquires a sharpening parameter for sharpening the transformed image based on the lens information, which indicates the resolution of a lens used at the time of capturing the captured image, and the enlargement ratio, and performs sharpening of the transformed image based on the sharpening parameter.
Claims10
An image processing apparatus comprising:
- a first acquisition unit configured to acquire a local enlargement ratio in an image transformed based on a transformation parameter;
- a second acquisition unit configured to acquire a transformed image which is a captured image transformed based on the transformation parameter;
- a third acquisition unit configured to acquire a sharpening parameter for sharpening the transformed image based on lens information, which indicates resolution of a lens used at a time of capturing the captured image, and the enlargement ratio;
- and
- a processing unit configured to perform sharpening of the transformed image based on the sharpening parameter.
An image processing method performed by an image processing apparatus, the method comprising:
- acquiring a local enlargement ratio in an image transformed based on a transformation parameter;
- acquiring a transformed image which is a captured image transformed based on the transformation parameter;
- acquiring a sharpening parameter for sharpening the transformed image based on lens information, which indicates resolution of a lens used at a time of capturing the captured image, and the enlargement ratio;
- and
- performing sharpening of the transformed image based on the sharpening parameter.
A non-transitory computer-readable storage medium for storing a computer program for causing a computer to function as:
- a first acquisition unit configured to acquire a local enlargement ratio in an image transformed based on a transformation parameter,
- a second acquisition unit configured to acquire a transformed image which is a captured image transformed based on the transformation parameter;
- a third acquisition unit configured to acquire a sharpening parameter for sharpening the transformed image based on lens information, which indicates resolution of a lens used at a time of capturing the captured image, and the enlargement ratio;
- and
- a processing unit configured to perform sharpening of the transformed image based on the sharpening parameter.
Dependencies are inferred from the claim text.