Apparatus, method and program for image processing
First Claim
Patent Images
1. An image processing apparatus comprising:
- parameter acquisition means for obtaining a weighting parameter for a statistical characteristic quantity representing a pattern of shadows in a predetermined structure in an input image by fitting a model representing the structure to the structure in the input image, the model having been obtained by carrying out predetermined statistical processing on a plurality of images representing the predetermined structure in different lighting conditions, and the model representing the structure by one or more statistical characteristic quantities including the statistical characteristic quantity representing the pattern of shadows in the structure and by weighting parameter or parameters for weighting the statistical characteristic quantity or quantities according to an individual characteristic of the structure; and
shadow pattern adjustment means for adjusting the pattern of shadows in the structure in the input image according to the weighting parameter after changing a value of the weighting parameter.
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Abstract
For enabling a change in lighting pattern in an image, adjustment of a shadow pattern is aimed at in an image. For this purpose, a parameter acquisition unit obtains weighting parameters representing the shadow pattern in a face region in the image by fitting to the face region detected by a face detection unit a mathematical model generated by a method of AAM using a plurality of sample images representing human faces in different lighting conditions. A shadow pattern adjustment unit adjusts the shadow pattern in the face region based on the weighting parameters having been obtained.
12 Citations
12 Claims
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1. An image processing apparatus comprising:
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parameter acquisition means for obtaining a weighting parameter for a statistical characteristic quantity representing a pattern of shadows in a predetermined structure in an input image by fitting a model representing the structure to the structure in the input image, the model having been obtained by carrying out predetermined statistical processing on a plurality of images representing the predetermined structure in different lighting conditions, and the model representing the structure by one or more statistical characteristic quantities including the statistical characteristic quantity representing the pattern of shadows in the structure and by weighting parameter or parameters for weighting the statistical characteristic quantity or quantities according to an individual characteristic of the structure; and
shadow pattern adjustment means for adjusting the pattern of shadows in the structure in the input image according to the weighting parameter after changing a value of the weighting parameter. - View Dependent Claims (2, 3, 4)
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5. An image processing method comprising the steps of:
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obtaining a weighting parameter for a statistical characteristic quantity representing a pattern of shadows in a predetermined structure in an input image by fitting a model representing the structure to the structure in the input image, the model having been obtained by carrying out predetermined statistical processing on a plurality of images representing the predetermined structure in different lighting conditions, and the model representing the structure by one or more statistical characteristic quantities including the statistical characteristic quantity representing the pattern of shadows in the structure and by weighting parameter or parameters for weighting the statistical characteristic quantity or quantities according to an individual characteristic of the structure; and
changing a value of the weighting parameter and adjusting the pattern of shadows in the structure in the input image according to the weighting parameter having been changed. - View Dependent Claims (6, 7, 8)
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9. An image processing program for causing a computer to function as:
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parameter acquisition means for obtaining a weighting parameter for a statistical characteristic quantity representing a pattern of shadows in a predetermined structure in an input image by fitting a model representing the structure to the structure in the input image, the model having been obtained by carrying out predetermined statistical processing on a plurality of images representing the predetermined structure in different lighting conditions, and the model representing the structure by one or more statistical characteristic quantities including the statistical characteristic quantity representing the pattern of shadows in the structure and by weighting parameter or parameters for weighting the statistical characteristic quantity or quantities according to an individual characteristic of the structure; and
shadow pattern adjustment means for adjusting the pattern of shadows in the structure in the input image according to the weighting parameter after changing a value of the weighting parameter. - View Dependent Claims (10, 11, 12)
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Specification