Patents by Inventor Jean Devars

Jean Devars 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 calibrating at least two video cameras relatively to each other for stereoscopic filming and device therefor
    Patent number: 7557835
    Abstract: Methods for calibrating at least two video cameras for a stereoscopic device includes: providing, on the lane portion, nine marks of hue other than that of the lane, sequenced on a first set of three concurrent virtual straight lines in a first point and distributed in specific manner on a second set of concurrent virtual straight lines in a second point; forming, with each of the cameras an image of the lane portion; defining, in each of the two images, one characteristic point of each mark image; determining, with the characteristic points, six concurrent straight line images respectively in two concurrent points; and processing the video signals delivered by each video camera such that the signals are representative of two images suitable for forming a stereoscopic video image. The method is useful for determining the occupancy condition of a lane portion and detecting incidents.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: July 7, 2009
    Assignee: Citilog
    Inventors: Jerome Douret, Ryad Benosman, Jean Devars, Salah Bouzar
  • Method for calibrating at least two video cameras relatively to each other for stereoscopic filming and device therefor
    Publication number: 20070008405
    Abstract: Methods for calibrating at least two video cameras for a stereoscopic device includes: providing, on the lane portion, nine marks of hue other than that of the lane, sequenced on a first set of three concurrent virtual straight lines in a first point and distributed in specific manner on a second set of concurrent virtual straight lines in a second point; forming, with each of the cameras an image of the lane portion; defining, in each of the two images, one characteristic point of each mark image; determining, with the characteristic points, six concurrent straight line images respectively in two concurrent points; and processing the video signals delivered by each video camera such that the signals are representative of two images suitable for forming a stereoscopic video image. The method is useful for determining the occupancy condition of a lane portion and detecting incidents.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 11, 2007
    Inventors: Ryad Benosman, Salah Bouzar, Jean Devars, Jerome Douret