Low threshold face recognition
First Claim
1. An image processing method, the method comprising:
- determining a skin tone hue value;
determining if each pixel'"'"'s hue value in an image is within a range defined by a radial distance from the skin tone hue value;
for pixels that are not within the range, excluding the pixels'"'"' values from the image processing;
for pixels that are within the range, increasing a score of each such pixel;
performing facial recognition based on the remaining pixel scores, detecting parts of a face using shape detection, andrecognizing specific ranges of distance from the skin tone hue value correlated with specific parts of the face.
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Abstract
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, are disclosed for reducing the impact of lighting conditions and biometric distortions, while providing a low-computation solution for reasonably effective (low threshold) face recognition. In one aspect, the methods include processing a captured image of a face of a user seeking to access a resource by conforming a subset of the captured face image to a reference model. The reference model corresponds to a high information portion of human faces. The methods further include comparing the processed captured image to at least one target profile corresponding to a user associated with the resource, and selectively recognizing the user seeking access to the resource based on a result of said comparing.
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Citations
18 Claims
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1. An image processing method, the method comprising:
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determining a skin tone hue value; determining if each pixel'"'"'s hue value in an image is within a range defined by a radial distance from the skin tone hue value; for pixels that are not within the range, excluding the pixels'"'"' values from the image processing; for pixels that are within the range, increasing a score of each such pixel; performing facial recognition based on the remaining pixel scores, detecting parts of a face using shape detection, and recognizing specific ranges of distance from the skin tone hue value correlated with specific parts of the face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-transitory machine readable storage device, storing program instructions that when executed cause an executing device to perform an image processing method, the method comprising:
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determining a skin tone hue value; determining if each pixel'"'"'s hue value in an image is within a range defined by a radial distance from the skin tone hue value; for pixels that are not within the range, excluding the pixels'"'"' values form the image processing; for pixels that are within the range, increasing a score of each such pixel;
performing facial recognition based on the remaining pixel scores, detecting parts of a face using shape detection, andrecognizing specific ranges of distance from the skin tone hue value correlated with specific parts of the face. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An image processing method, the method comprising:
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determining a skin tone hue value; determining if each pixel'"'"'s hue value in an image is within a range defined by a radial distance from the skin tone hue value; for pixels that are not within the range, excluding the pixels'"'"' values from the image processing; for pixels that are within the range, increasing a score of each such pixel; performing facial recognition based on the remaining pixel scores, using shape detection to detect parts of a face, and modifying pixels scores based on a search characteristic related to the shape detection, and recognizing specific ranges of distance from the skin tone hue value correlated with specific parts of the face.
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18. An image processing method, the method comprising:
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converting a color image to a hue image; determining a skin tone hue value; determining if each pixel'"'"'s hue value in the hue image is within a range defined by a radial distance from the skin tone hue value; for pixels that are not within the range, excluding the pixels'"'"' values from the image processing; for pixels that are within the range, increasing a score of each such pixel; performing facial recognition based on the remaining pixel scores, detecting parts of a face using shape detection, and recognizing specific ranges of distance from the skin tone hue value correlated with specific parts of the face.
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Specification