Patents by Inventor Stéphane Derrode

Stéphane Derrode 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).

  • Method and device for selecting images in a sequence of iris images received in a stream
    Patent number: 8442339
    Abstract: A method for selecting images from a set of images (according to sharpness and contrast criteria), comprising pre-selecting images by a simplified sharpness and/or contrast analysis of each image in the set of images, and of selecting images by a finer analysis of the sharpness and/or contrast of each pre-selected image. This method is particularly useful to perform an identification by recognition of the iris.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: May 14, 2013
    Assignees: STMicroelectronics S.A., Universite Paul Cezanne Aix-Marseille III
    Inventors: Lionel Martin, William Ketchantang, Stéphane Derrode
  • Method and device for locating a human iris in an eye image
    Patent number: 8325996
    Abstract: The present disclosure relates to a method for locating the iris in an image of an eye, comprising steps of locating the pupil in the image, of detecting positions of intensity steps of pixels located on a line passing through the pupil and transition zones between the iris and the cornea, on either side of the pupil, and of determining the center and the radius of a circle passing through the detected positions of the transitions.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: December 4, 2012
    Assignees: STMicroelectronics Rousset SAS, Universite Paul Cezanne Aix Marseille III
    Inventors: Lionel Martin, Guillaume Petitjean, Stéphane Derrode, William Ketchantang
  • Method and device for locating a human iris in an eye image
    Publication number: 20080273763
    Abstract: The present disclosure relates to a method for locating the iris in an image of an eye, comprising steps of locating the pupil in the image, of detecting positions of intensity steps of pixels located on a line passing through the pupil and transition zones between the iris and the cornea, on either side of the pupil, and of determining the center and the radius of a circle passing through the detected positions of the transitions.
    Type: Application
    Filed: April 24, 2008
    Publication date: November 6, 2008
    Applicants: STMicroelectronics Rousset SAS, Universite Paul Cezanne Aix Marseille III
    Inventors: Lionel Martin, Guillaume Petitjean, Stephane Derrode, William Ketchantang
  • Method and device for selecting images in a sequence of iris images received in a stream
    Publication number: 20080075335
    Abstract: A method for selecting images from a set of images (according to sharpness and contrast criteria), comprising pre-selecting images by a simplified sharpness and/or contrast analysis of each image in the set of images, and of selecting images by a finer analysis of the sharpness and/or contrast of each pre-selected image. This method is particularly useful to perform an identification by recognition of the iris.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 27, 2008
    Applicants: STMicroelectronics S.A., Universite Paul Cezanne Aix-Marseille III
    Inventors: Lionel Martin, William Ketchantang, Stephane Derrode