Method for skin tone detection
AssigneeUniversity of Ulster
InventorsAbbas Cheddad, Joan Condell, Kevin Curran, Paul Mckevitt
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Abstract
There is described a method for detecting the presence of skin tone in an image. A gray scale representation of a pixel within the image is provided. Next, a red chrominance independent representation for is provided for the pixel. Then, the two representations are analysed to determine whether a difference in value between the representations corresponds with a the presence of a skin tone value. The present invention provides a rapid skin tone detection classifier particularly useful for real time applications.
Claims19
A method of skin tone detection comprising the steps of:
- providing a gray scale representation of a pixel within an acquired image;
- providing a representation for said pixel which is independent of red chrominance;
- and
- determining whether a difference in value between said representations corresponds with a skin tone value.
A method of extracting data embedded in an image, the method comprising the steps of:
- identifying one or more skin tone regions within said acquired image by:
- providing a gray scale representation of a pixel within an acquired image;
- providing a representation for said pixel which is independent of red chrominance;
- and
- determining whether a difference in value between said representations corresponds with a skin tone value;
- wherein the method further comprises the step of determining one or more regions of skin tone in said image, each region comprising a plurality of contiguous pixels, each determined to have a value indicating the pixel has a skin tone;
- and
- extracting data from at least a portion of said skin tone regions of said image.
A computer program product comprises a computer readable medium on which computer instructions are stored which when executed in a computing device are arranged to perform the steps of:
- providing a gray scale representation of a pixel within an acquired image;
- providing a representation for said pixel which is independent of red chrominance;
- and
- determining whether a difference in value between said representations corresponds with a skin tone value.
Dependencies are inferred from the claim text.