METHOD OF LOCATING FEATURES OF AN OBJECT
First Claim
1. A method of locating features of an object, of a class of objects, within a target image, the method comprising:
- initialising a set of feature points within the target image, each feature point corresponding to a predetermined feature for objects of the class of objects;
deriving a set of template detectors, from the set of feature points, using a statistical model of the class of objects, each template detector comprising an area of image located about the location of a feature point for an object of the class of objects;
comparing the set of template detectors with the target image; and
updating the set of feature points within the target image in response to the result of the comparison.
2 Assignments
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Accused Products
Abstract
A method of locating features of an object, of a class of objects, of a class of objects, within a target image. The method comprises initialising a set of feature points within the target image, each feature point corresponding to a predetermined feature for objects of the class of objects; deriving a set of template detectors, from the set of feature points, using a statistical model of the class of objects, each template detector comprising an area of image located about the location of a feature point for an object of the class of objects; comparing the set of template detectors with the target image; and updating the set of feature points within the target image in response to the result of the comparison.
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Citations
30 Claims
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1. A method of locating features of an object, of a class of objects, within a target image, the method comprising:
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initialising a set of feature points within the target image, each feature point corresponding to a predetermined feature for objects of the class of objects; deriving a set of template detectors, from the set of feature points, using a statistical model of the class of objects, each template detector comprising an area of image located about the location of a feature point for an object of the class of objects; comparing the set of template detectors with the target image; and updating the set of feature points within the target image in response to the result of the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of modelling the visual appearance of an object, of a class of objects, within a target image, the method comprising:
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initialising a set of feature points within the target image, each feature point corresponding to a predetermined feature for objects of the class of objects; deriving a set of template detectors, from the set of feature points, using a statistical model of the class of objects, each template detector comprising an area of image located about the location of a feature point for an object of the class of objects; comparing the set of template detectors with the target image; and updating the set of feature points within the target image in response to the result of the comparison.
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21. A method of modelling the visual appearance of a human face, within a target image, the method comprising:
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initialising a set of feature points within the target image, each feature point corresponding to a predetermined facial feature; deriving a set of template detectors, from the set of feature points, using a statistical model of human faces, each template detector comprising an area of image located about the location of a facial feature; comparing the set of template detectors with the target image; and updating the set of feature points within the target image in response to the result of the comparison.
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22. (canceled)
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23. (canceled)
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24. An apparatus for locating features of an object, of a class of objects, within a target image, the apparatus comprising:
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means for initialising a set of feature points within the target image, each feature point corresponding to a predetermined feature for objects of the class of objects; means for deriving a set of template detectors, from the set of feature points, using a statistical model of the class of objects, each template detector comprising an area of image located about the location of a feature point for an object of the class of objects; means for comparing the set of template detectors with the target image; and means for updating the set of feature points within the target image in response to the result of the comparison.
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25-28. -28. (canceled)
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29. A computer program product comprising a computer useable medium having a computer readable program, wherein the computer readable program when executed on a computer causes the computer to:
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initialise a set of feature points within the target image, each feature point corresponding to a predetermined feature for objects of the class of objects; derive a set of template detectors, from the set of feature points, using a statistical model of the class of objects, each template detector comprising an area of image located about the location of a feature point for an object of the class of objects; compare the set of template detectors with the target image; and update the set of feature points within the target image in response to the result of the comparison.
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30. A computer apparatus for locating features of an object, of a class of objects, within a target image the apparatus comprising:
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a program memory storing processor readable instructions; and a processor configured to read and execute instructions stored in said program memory to initialise a set of feature points within the target image, derive a set of template detectors, from the set of feature points, using a statistical model of the class of objects, compare the set of template detectors with the target image, and update the set of feature points within the target image in response to the result of the comparison, each feature point corresponding to a predetermined feature for objects of the class of objects, each template detector comprising an area of image located about the location of a feature point for an object of the class of objects.
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Specification