Patents by Inventor Yuka Sugimura

Yuka Sugimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Biometric authentication device, authentication accuracy evaluation device and biometric authentication method
    Patent number: 8374401
    Abstract: A biometric authentication device includes a verification-image generation probability calculation unit for calculating a verification-image generation probability using a verification-image generation probability model, a change probability calculation unit for calculating a change probability of a set of a registration image and a verification image using a change probability model, a dissimilarity calculation unit for calculating the degree of dissimilarity on the basis of the verification-image generation probability and the change probability and an authentication unit for determining whether the verification image belongs to an authentication target by comparing the degree of dissimilarity with a predetermined authentication threshold.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 12, 2013
    Assignee: Fujitsu Limited
    Inventors: Yuka Sugimura, Toshio Endoh
  • BIOMETRIC AUTHENTICATION DEVICE, AUTHENTICATION ACCURACY EVALUATION DEVICE AND BIOMETRIC AUTHENTICATION METHOD
    Publication number: 20100316261
    Abstract: A biometric authentication device includes a verification-image generation probability calculation unit for calculating a verification-image generation probability using a verification-image generation probability model, a change probability calculation unit for calculating a change probability of a set of a registration image and a verification image using a change probability model, a dissimilarity calculation unit for calculating the degree of dissimilarity on the basis of the verification-image generation probability and the change probability and an authentication unit for determining whether the verification image belongs to an authentication target by comparing the degree of dissimilarity with a predetermined authentication threshold.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 16, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Yuka SUGIMURA, Toshio Endoh