Information processing apparatus and control method therefor
First Claim
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1. An information processing apparatus comprising:
- an input device adapted to input image data containing a face;
a memory adapted to store the image data;
a first detection device adapted to detect, from the image data stored in said memory, positions of a plurality of specific parts of the face, wherein said first detection device has been learned by supervisory data with various kinds of variations;
an area setting device adapted to set respective feature point pixel extraction areas for a plurality of feature point pixels of the specific parts in the image data on the basis of the detected positions of the specific parts;
a second detection device adapted to detect respective positions of the plurality of feature point pixels of the specific parts from the respective feature point pixel extraction areas, wherein said second detection device has been learned by supervisory data with specific variation that is one of the various kinds of variations; and
a determination device adapted to determine facial expression of the face on the basis of the detected feature point pixels,wherein said second detection device has higher detection accuracy than detection accuracy of said first detection device, and said first detection device is robust to a variation in a detection target.
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Abstract
An information processing apparatus includes an image input unit which inputs image data containing a face, a face position detection unit which detects, from the image data, the position of a specific part of the face, and a facial expression recognition unit which detects a feature point of the face from the image data on the basis of the detected position of the specific part and determines facial expression of the face on the basis of the detected feature point. The feature point is detected at a detection accuracy higher than detection of the position of the specific part. Detection of the position of the specific part is robust to a variation in the detection target.
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Citations
16 Claims
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1. An information processing apparatus comprising:
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an input device adapted to input image data containing a face; a memory adapted to store the image data; a first detection device adapted to detect, from the image data stored in said memory, positions of a plurality of specific parts of the face, wherein said first detection device has been learned by supervisory data with various kinds of variations; an area setting device adapted to set respective feature point pixel extraction areas for a plurality of feature point pixels of the specific parts in the image data on the basis of the detected positions of the specific parts; a second detection device adapted to detect respective positions of the plurality of feature point pixels of the specific parts from the respective feature point pixel extraction areas, wherein said second detection device has been learned by supervisory data with specific variation that is one of the various kinds of variations; and a determination device adapted to determine facial expression of the face on the basis of the detected feature point pixels, wherein said second detection device has higher detection accuracy than detection accuracy of said first detection device, and said first detection device is robust to a variation in a detection target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16)
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15. A control method stored in a storage medium for causing an information processing apparatus to execute processing of image data containing a face, comprising steps of:
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inputting image data containing a face; storing image data in a memory; detecting, by a first detection device which has been learned by supervisory data with various kinds of variations, from the image data stored in the memory, positions of a plurality of specific parts of the face; setting respective feature point pixel extraction areas for a plurality of feature point pixels of the specific parts in the image data on the basis of the detected positions of the specific parts; detecting by a second detection device which has been learned by supervisory data with specific variation that is one of the various kinds of variations, the plurality of feature point pixels of the specific parts from the respective feature point pixel extraction areas; and determining facial expression of the face on the basis of the detected feature point pixels, wherein the second detection step has higher detection accuracy than detection accuracy of the first detection step, and the first detection step is robust to a variation in a detection target.
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Specification