Photography apparatus, photography method, and photography program for obtaining an image of a subject
First Claim
Patent Images
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.
14 Citations
12 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, 4, 5, 6, 7, 8, 9, 10)
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11. 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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12. A computer readable medium having a photography program recorded thereon, which program, when executed by a computer, causes the 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