| 摘要 |
Graininess reduction processing is carried out with accuracy by finding a degree of graininess in an image. For this purpose, a parameter acquisition unit obtains a weighting parameter for a principal component representing the degree of graininess in a face region found in the image by a face detection unit, by fitting to the face region a mathematical model generated by a method of AAM using a plurality of sample images representing human faces in different degrees of graininess. A parameter changing unit changes the parameter to have a desired value. A graininess reduction unit reduces graininess of the face region according to the parameter having been changed.
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