Patents by Inventor Helene Sottocasa

Helene Sottocasa 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 for determining measurement parameters for a spectacle wearer
    Patent number: 5617155
    Abstract: A method for determining measurement parameters from the image of a spectacle wearer wearing a spectacle frame is disclosed in which the position of the center of the pupil of each eye is obtained automatically by analyzing the luminance gradient in the region of the pupils and the positions of the horizontal and vertical straight lines tangential to the frame are also obtained automatically by luminance gradient analysis and extraction of the contours of the frame, enabling said parameters to be calculated accurately.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: April 1, 1997
    Assignee: Essilor International
    Inventors: Christian Ducarouge, Richard Grisel, Nicholas Giraud, Helene Sottocasa, Alain Chansavoir, Ahmed Haddadi