Face feature point detecting device and method
OwnerMayumi Yuasa, Tatsuo Kozakayainventors
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Abstract
A face feature point detecting device includes a unit for inputting an image containing a face of a person, a unit for detecting a feature point set candidate comprising plural kinds of feature points, a unit for calculating the corresponding error between the detected feature point set and the corresponding feature point set on the three-dimensional model of the face, and a unit for judging the consistency of the arrangement of the detected feature point set candidate.
Claims18
A face feature point detecting device comprising:
- an image input unit configured to input an image containing a face of a person;
- a feature point set candidate detecting unit configured to detect feature point set candidates each of which comprises plural kinds of feature points related to the face, from the image;
- a model information storage unit configured to store three-dimensional model information having information of positions of the feature points of the face on a three-dimensional model of the face;
- a projecting unit configured to obtain a projected feature point set by projecting a feature point set in the three-dimensional model information onto a two-dimensional area, the feature point set comprising the plural kinds of the feature points on the three-dimensional model of the face;
- an error calculating unit configured to calculate error between each feature point of the projected feature point set and each feature point of the feature point set candidate;
- and
- a selecting unit configured to select a consistent feature point set having feature points whose respective errors satisfy a predetermined condition from the feature point set candidates.
A face feature point detecting method comprising:
- inputting an image containing a face of a person;
- detecting from the image, feature point set candidates each of which comprises plural kinds of feature points concerning the face;
- storing three-dimensional model information having information of positions of the feature points of the face, on a three-dimensional model of the face;
- projecting a feature point set in the three-dimensional model information onto a two-dimensional area as to obtain a projected feature point set, the feature point set comprising the plural kinds of the feature points on the three-dimensional model of the face;
- calculating error between each feature point of the projected feature point set and each feature point of the feature point set candidate;
- and
- selecting a consistent feature point set having feature points whose respective errors satisfy a predetermined condition from the feature point set candidates.
A program stored in a computer readable medium for detecting face feature point, the program comprising instructions of:
- inputting an image containing a face area of a person;
- detecting a feature point set candidate comprising plural kinds of feature points concerning the face, from the image;
- storing three-dimensional model information having information of positions of the feature points of the face, on a three-dimensional model of the face;
- projecting a feature point set in the three-dimensional model information onto a two-dimensional area as to obtain a projected feature point set, the feature point set comprising the plural kinds of the feature points on the three-dimensional model of the face;
- calculating error between each feature point of the projected feature point set and each feature point of the feature point set candidate;
- and
- selecting a consistent feature point set having feature points whose respective errors satisfy a predetermined condition, from the feature point set candidates.
Dependencies are inferred from the claim text.