| 摘要 |
An imager for capturing an image is provided having a face detector, a mouth detector, a sound detector, and a subject detector. The face detector detects a face in an image. The mouth detector detects the state of a mouth that is on the face detected by the face detector. The sound detector detects the ambient sound of the imager. The subject detector determines which face is the main subject on the basis of the state of its mouth at the time that the sound detector detects ambient sound.
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