Method and apparatus for the automatic detection of facial features
First Claim
Patent Images
1. A method of utilizing a computer system to automatically detect the location of a face within an input image, the method comprising the steps of:
- (a) detecting a pair of eye locations within the input image;
(b) based on said pair of eye locations, extracting a potential face region within the input image;
(c) enhancing the extracted potential face region;
(d) detecting facial features within the enhanced extracted potential face region;
(e) classifying the facial features; and
(f) based on the classified facial features, verifying the face topology within the potential face region to determine the location of the face within the input image.
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Abstract
A method of utilizing a computer system to automatically detect the location of a face within a series of images, the method comprising the steps of: detecting eye like regions within the series of images; utilizing the eye like regions to extract potential face regions within the series of images; enhancing the facial features in the extracted potential face regions; classifying the features; and verifying the face topology within the potential face regions.
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Citations
16 Claims
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1. A method of utilizing a computer system to automatically detect the location of a face within an input image, the method comprising the steps of:
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(a) detecting a pair of eye locations within the input image; (b) based on said pair of eye locations, extracting a potential face region within the input image; (c) enhancing the extracted potential face region; (d) detecting facial features within the enhanced extracted potential face region; (e) classifying the facial features; and (f) based on the classified facial features, verifying the face topology within the potential face region to determine the location of the face within the input image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of detecting at least one facial feature of a subject in an image, said method including the steps of:
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(a) determining a pair of points, within the current image, representing the position of the subject'"'"'s eyes; (b) selecting at least a portion of said current image, based on the position of said points within the current image; (c) enhancing the selected portion of said current image; (d) detecting one or more features within said enhanced image portion; (e) classifying said one or more detected features as potential facial features; and (f) determining whether at least one facial feature has been identified by comparing the relative positions of said one or more potential facial features within said enhanced image portion with at least one facial feature positioning condition. - View Dependent Claims (14, 15)
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16. A method of detecting eyes within an input image, the method comprising the steps of:
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(a) applying a dark radial symmetry transform to the input image so as to produce a first transformed image; (b) dividing the image into a number of regions; (c) determining a location of a maximum value of the dark radial symmetry transform in each region; (d) applying a Hough transform to the area centered on each maximum value so as to produce a second transformed image; and (e) analyzing geometric constraints and relative image values in said second transformed image to determine potential eye locations within the input image.
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Specification