Photography apparatus, photography method, and photography program
First Claim
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1. A photography apparatus comprising:
- face detection means for detecting a face region in an input through image by fitting a model representing a human face to a face candidate region in the input through image, the model obtained by carrying out predetermined statistical processing on a plurality of images representing human faces, and the model representing the human face by one or more statistical characteristic quantities including a statistical characteristic quantity representing at least a face outline shape;
exposure value determination means for determining an exposure value for photography of a still image, based on the face region having been detected; and
photography means for carrying out the photography of the still image according to the exposure value having been determined.
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Abstract
An exposure value is determined based on a face region, with high accuracy and with less effect of a background region or density contrast caused by shadow. For this purpose, a face detection unit detects a face region from a face candidate region in a through image detected by a face candidate detection unit, by fitting to the face candidate region a mathematical model generated by a method of AAM using a plurality of sample images representing human faces. An exposure value determination unit then determines an exposure value for photography, based on the face region.
88 Citations
6 Claims
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1. A photography apparatus comprising:
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face detection means for detecting a face region in an input through image by fitting a model representing a human face to a face candidate region in the input through image, the model obtained by carrying out predetermined statistical processing on a plurality of images representing human faces, and the model representing the human face by one or more statistical characteristic quantities including a statistical characteristic quantity representing at least a face outline shape;
exposure value determination means for determining an exposure value for photography of a still image, based on the face region having been detected; and
photography means for carrying out the photography of the still image according to the exposure value having been determined. - View Dependent Claims (2, 3, 6)
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4. A photography method comprising the steps of:
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detecting a face region in an input through image by fitting a model representing a human face to a face candidate region in the input through image, the model obtained by carrying out predetermined statistical processing on a plurality of images representing human faces, and the model representing the human face by one or more statistical characteristic quantities including a statistical characteristic quantity representing at least a face outline shape;
determining an exposure value for photography of a still image, based on the face region having been detected; and
carrying out the photography of the still image according to the exposure value having been determined.
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5. A photography program for causing a computer to function as:
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face detection means for detecting a face region in an input through image by fitting a model representing a human face to a face candidate region in the input through image, the model obtained by carrying out predetermined statistical processing on a plurality of images representing human faces, and the model representing the human face by one or more statistical characteristic quantities including a statistical characteristic quantity representing at least a face outline shape;
exposure value determination means for determining an exposure value for photography of a still image, based on the face region having been detected; and
photography means for carrying out the photography of the still image according to the exposure value having been determined.
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Specification