Method for driving virtual facial expressions by automatically detecting facial expressions of a face image
First Claim
1. A method for driving virtual facial expressions by automatically detecting facial expressions of a face image, which is applied to a digital image capturing device, comprising:
- a face detection block, for automatically detecting positions of a face, eyes, a nose, and a mouth in a target image captured by said digital image capturing device, and converting said detected positions into a standard image for a virtual front face, and calculating initial positions of all related key points of eyes, nose, and mouth of said target image on said standard image;
a key point detection block, for calculating exact positions of said key points of said target image on said standard image, and inversely aligning said exact positions of all key points of said standard image onto said target image, and labeling said exact positions as exact positions of said key points on said target image; and
a key point tracking block, for automatically tracking the positions of all key points of other target image captured by said digital image capturing device later, and correcting said exact position of each key point on said standard image.
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Abstract
A method for driving virtual facial expressions by automatically detecting facial expressions of a face image is applied to a digital image capturing device. The method includes the steps of detecting a face image captured by the image capturing device and images of a plurality of facial features with different facial expressions to obtain a key point position of each facial feature on the face image; mapping the key point positions to a virtual face as the key point positions of corresponding facial features on the virtual face; dynamically tracking the key point of each facial feature on the face image; estimating the key point positions of each facial feature of the current face image according to the key point positions of each facial feature on a previous face image; and correcting the key point positions of the corresponding facial features on the virtual face.
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Citations
21 Claims
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1. A method for driving virtual facial expressions by automatically detecting facial expressions of a face image, which is applied to a digital image capturing device, comprising:
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a face detection block, for automatically detecting positions of a face, eyes, a nose, and a mouth in a target image captured by said digital image capturing device, and converting said detected positions into a standard image for a virtual front face, and calculating initial positions of all related key points of eyes, nose, and mouth of said target image on said standard image; a key point detection block, for calculating exact positions of said key points of said target image on said standard image, and inversely aligning said exact positions of all key points of said standard image onto said target image, and labeling said exact positions as exact positions of said key points on said target image; and a key point tracking block, for automatically tracking the positions of all key points of other target image captured by said digital image capturing device later, and correcting said exact position of each key point on said standard image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification