System for detecting skin-tone regions within an image
First Claim
1. A method of detecting a skin-tone region within an image comprising the steps of;
- (a) receiving said image including a plurality of pixels of said image is represented by respective groups of at least three values, said values are in a first color space;
(b) filtering said image by transforming a plurality of said respective groups of said at least three values in said first color space to respective groups of less than three values in a second color space, where said respective groups of said less than three values has less dependency on brightness than said respective groups of said at least three values;
(c) determining regions of said image in said second color space representative of skin-tones based on said filtering of step (b);
(d) calculating a first distribution of said regions of said image in a color space different than said second color space representative of said skin-tones in a first direction;
(e) calculating a second distribution of said regions of said image in said different color space of step (d) representative of said skin-ton in a second direction, where said first direction and said second direction are different; and
(f) locating said skin-tone region within said image based on said first distribution and said second distribution.
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Accused Products
Abstract
A system detects a face within an image by receiving the image which includes a plurality of pixels, where a plurality of the pixels of the image is represented by respective groups of at least three values. The image is filtered by transforming a plurality of the respective groups of the at least three values to respective groups of less than three values, where the respective groups of the less than three values has less dependency on brightness than the respective groups of the at least three values. Regions of the image representative of skin-tones are determined based on the filtering. A first distribution of the regions of the image representative of the skin-tones in a first direction is calculated. A second distribution of the regions of the image representative of the skin-tones in a second direction is calculated, where the first direction and the second direction are different. The face within the image is located based on the first distribution and the second distribution. The estimated face location may also be used for tracking the face between frames of a video.
299 Citations
18 Claims
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1. A method of detecting a skin-tone region within an image comprising the steps of;
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(a) receiving said image including a plurality of pixels of said image is represented by respective groups of at least three values, said values are in a first color space; (b) filtering said image by transforming a plurality of said respective groups of said at least three values in said first color space to respective groups of less than three values in a second color space, where said respective groups of said less than three values has less dependency on brightness than said respective groups of said at least three values; (c) determining regions of said image in said second color space representative of skin-tones based on said filtering of step (b); (d) calculating a first distribution of said regions of said image in a color space different than said second color space representative of said skin-tones in a first direction; (e) calculating a second distribution of said regions of said image in said different color space of step (d) representative of said skin-ton in a second direction, where said first direction and said second direction are different; and (f) locating said skin-tone region within said image based on said first distribution and said second distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification