Fraud detection for facial recognition systems
First Claim
Patent Images
1. A computing device, comprising:
- a camera;
an illumination device;
at least one processor; and
memory including instructions that, when executed by the at least one processor, cause the computing device to;
activate a facial recognition mode to control access to the computing device;
activate the illumination device to emit light to an area within a field of view of the camera;
capture an image of the area using the camera, the image containing first image data corresponding to at least a portion of a human face;
analyze the first image data to match the first image data corresponding to the at least the portion of the human face to a stored model corresponding to a face of an authorized user of the computing device;
detect evidence in the first image data indicative of an artificial two dimensional representation of the human face presented to the camera, wherein the evidence is based at least in part on the light generated by the illumination device, the evidence including at least one or more specular reflections caused by the light emitted by the illumination device, a pattern of the specular reflections having a characteristic of a flat surface; and
deny the access to the computing device in response to detecting that the evidence in the image indicates the artificial two dimensional representation presented to the camera.
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Abstract
Approaches are described which enable a computing device (e.g., mobile phone, tablet computer) to utilize one or more facial recognition techniques to control access to the device and to detect when artificial representations of a user, such as a picture or photograph, are being used in an attempt to gain access to the device. Evidence indicative of artificial representations may include lack of changes in facial skin color between multiple images captured by a camera, ability to track one or more features of the human face while the camera is rotated or moved, presence of secular reflections caused by an illumination device, absence of shadows in the image, and others.
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Citations
20 Claims
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1. A computing device, comprising:
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a camera; an illumination device; at least one processor; and memory including instructions that, when executed by the at least one processor, cause the computing device to; activate a facial recognition mode to control access to the computing device; activate the illumination device to emit light to an area within a field of view of the camera; capture an image of the area using the camera, the image containing first image data corresponding to at least a portion of a human face; analyze the first image data to match the first image data corresponding to the at least the portion of the human face to a stored model corresponding to a face of an authorized user of the computing device; detect evidence in the first image data indicative of an artificial two dimensional representation of the human face presented to the camera, wherein the evidence is based at least in part on the light generated by the illumination device, the evidence including at least one or more specular reflections caused by the light emitted by the illumination device, a pattern of the specular reflections having a characteristic of a flat surface; and deny the access to the computing device in response to detecting that the evidence in the image indicates the artificial two dimensional representation presented to the camera. - View Dependent Claims (2, 3, 4, 5)
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6. A computer implemented method, comprising:
under the control of one or more computer systems configured with executable instructions, causing light to be emitted by an illumination component; generating first image data, using a camera, the first image data representing at least a portion of a human face; analyzing the first image data to identify the portion of the human face; detecting one or more specular reflections in the first image data associated with the light; and preventing access to at least one function of a computing device based at least in part on the detecting one or more specular reflections, a pattern of the specular reflections having a characteristic of a flat surface. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A computing device, comprising:
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a camera; an illumination component; at least one processor; and memory including instructions that, when executed by the at least one processor, cause the computing device to; cause light to be emitted by the illumination component; generate first image data, using the camera, the first image data representing at least a portion of a human face; analyze the first image data to identify the portion of the human face; detect one or more specular reflections in the first image data associated with the light; and prevent access to at least one function of the computing device based at least in part on the one or more specular reflections, a pattern of the specular reflections having a characteristic of a flat surface. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification