Patents by Inventor Junichi Funada

Junichi Funada 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).

  • Fingerprint/palmprint image processing apparatus
    Patent number: 6118891
    Abstract: A local information extracting portion 11 extracts a plurality of ridge line candidate images for each of local regions into which an image has been divided. A first ridge line candidate image selecting portion 12 selects a first ridge line candidate image that has high likelihood of a ridge line for each local region. A connectivity evaluating portion 13 evaluates the connectivity of first ridge line candidate images between each local region. A clustering portion 14 clusters local regions corresponding to the evaluated result of the connectivity evaluating portion 13 and generates a local region group. A cluster evaluating portion 15 determines an initial local region group that is a local region group having high likelihood of a ridge line. A ridge line image restoring portion 16 outputs a first ridge line candidate image for each local region that is included in the initial local region group.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: September 12, 2000
    Assignee: NEC Corporation
    Inventor: Junichi Funada
  • Fingerprint/palmprint image processing apparatus
    Patent number: 5937082
    Abstract: A local information extracting portion 11 extracts a plurality of ridge line candidate images for each of local regions into which an image has been divided. A first ridge line candidate image selecting portion 12 selects a first ridge line candidate image that has high likelihood of a ridge line for each local region. A connectivity evaluating portion 13 evaluates the connectivity of first ridge line candidate images between each local region. A clustering portion 14 clusters local regions corresponding to the evaluated result of the connectivity evaluating portion 13 and generates a local region group. A cluster evaluating portion 15 determines an initial local region group that is a local region group having high likelihood of a ridge line. A ridge line image restoring portion 16 outputs a first ridge line candidate image for each local region that is included in the initial local region group.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 10, 1999
    Assignee: NEC Corporation
    Inventor: Junichi Funada