Image correction apparatus and method
AssigneeFUJIFILM Corporation
InventorTomokazu Nakamura
Life of this patent
Estimating the term…
Abstract
When the image of a face is detected from within the image of a subject, the brightness of the face image is calculated. If it is determined that the face image is dark are requires a correction, a revised gamma correction curve is calculated in such a manner that both the face image and the overall image of the subject take on the appropriate brightness. A gamma correction is applied using the revised gamma correction curve. Noise reduction processing is executed in order to suppress the amount of noise produced by the gamma correction.
Claims12
An image correction apparatus comprising:
- a brightness correcting device for correcting subject image data, which represents the image of a subject, in such a manner that the brightness of a target image, which is one portion within the image of the subject, will take on a prescribed target value;
- a noise reduction parameter deciding device for deciding a noise reduction parameter based upon an amount of correction applied in said brightness correcting device;
- and
- a noise reducing device for applying noise reduction processing to the subject image data, which has been corrected by said brightness correcting device, based upon the noise reduction parameter decided by said noise reduction parameter deciding device.
An image correction method comprising the steps of:
- correcting subject image data, which represents the image of a subject, in such a manner that the brightness of a target image, which is one portion within the image of the subject, will take on a prescribed target value;
- deciding a noise reduction parameter based upon an amount of correction in the correction of subject image data;
- and
- applying noise reduction processing to the corrected subject image data based upon the noise reduction parameter decided.
Dependencies are inferred from the claim text.