Patent ID: 11954940
Assignee: NEC CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A system in a device for liveness detection authentication of a facial image, the system comprising:
a multi-color illumination device for providing illumination in a first direction;
a camera for acquiring images in at least the first direction
a memory for storing data, wherein the stored data comprises a stored image of a user to be authenticated; and
a processor coupled to the multi-color illumination device and the camera, the processor recording a first image from the camera when the multi-color illumination device illuminates the facial image with a first color and recording a second image from the camera when the multi-color illumination device illuminates the facial image with a second color, the processor analyzing a combination of the first and second images to determine if the facial image is consistent with a three-dimensional (3D) structure in response to a combination of the first and second images, the processor determining if the facial image matches the user to be authenticated by comparing the combination of the first and second images to the stored image of the user to be authenticated, the processor authenticating the facial image if the facial image is consistent with the 3D structure and the facial image matches a face of the user to be authenticated.