Image processing device, imaging device, image processing method
AssigneeCanon Kabushiki Kaisha
InventorsKatsuhiko Mori, Yuji Kaneda, Masakazu Matsugu, Yusuke Mitarai, Takashi Suzuki
Life of this patent
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Abstract
An image including a face is input (S201), a plurality of local features are detected from the input image, a region of a face in the image is specified using the plurality of detected local features (S202), and an expression of the face is determined on the basis of differences between the detection results of the local features in the region of the face and detection results which are calculated in advance as references for respective local features in the region of the face (S204).
Claims6
An image processing apparatus comprising:
- an input unit constructed to input images successively;
- a storage unit constructed to store the successively input images temporally;
- a face detection unit constructed to detect a face from each of the successively input images;
- an estimation unit constructed to acquire, if said face detection unit has detected the face, an estimation value for an expression of the detected face;
- a recording unit constructed to record the successively input images selectively;
- and
- a control unit constructed to control said recording unit to record the image from which the face having the estimation value which satisfies a recording condition has been detected,
- wherein said input unit successively inputs images by successively executing a process of inputting a next image when said face detection unit completes a process for detecting the face, and
- wherein said estimation unit executes a process for acquiring the estimation value corresponding to the expression of the face on the basis of differences between relative positions of predetermined features extracted from the face using an image previously input by said input unit at a timing when said input unit inputs an image, and relative positions derived in advance as references for the predetermined features extracted from the face.
An image processing method comprising:
- an input step of inputting images successively;
- a storage step of storing the successively input images temporally;
- a face detection step of detecting a face from each of the successively input images;
- an estimation step of acquiring, if the face has been detected in the face detection step, an estimation value for an expression of the detected face;
- and
- a recording step of recording the image from which the face having the estimation value which satisfies a recording condition has been detected,
- wherein said input step successively inputs images by successively executing a process of inputting a next image when said face detection step completes a process for detecting the face, and
- wherein said estimation step executes a process for acquiring the estimation value corresponding to the expression of the face on the basis of differences between relative positions of predetermined features extracted from the face using an image previously input by said input step at a timing when said input step inputs an image, and relative positions derived in advance as references for the predetermined features extracted from the face.
Dependencies are inferred from the claim text.