Patents by Inventor Raphaël Labayrade

Raphaël Labayrade 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).

  • Device for measuring visibility distance
    Patent number: 7873188
    Abstract: The invention relates to a device for determining visibility distance in a landscape. The device comprises a camera for taking an image of said landscape; means for storing said image; means for associating each pixel of the image with information representative of the distance between the camera and the point in the landscape corresponding to said pixel, thereby obtaining a map of distances; means for processing the image to detect whether a pixel of the image presents contrast greater than a predetermined value relative to at least some adjacent pixels; means for applying said processing for detecting contrast successively to the pixels of the image beginning from the pixel corresponding to the greatest distance and continuing to the first pixel found to satisfy the contrast condition; and means for associating said pixel with distance information from said map of distances.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: January 18, 2011
    Assignees: Laboratoire Central des Ponts et Chaussees, Institut National de Recherche sur les Transports et leur Securité
    Inventors: Nicolas Hautiere, Raphaël Labayrade, Didier Aubert
  • Sight Distance Measuring Device
    Publication number: 20080137911
    Abstract: The invention relates to a device for determining visibility distance in a landscape. The device comprises a camera for taking an image of said landscape; means for storing said image; means for associating each pixel of the image with information representative of the distance between the camera and the point in the landscape corresponding to said pixel, thereby obtaining a map of distances; means for processing the image to detect whether a pixel of the image presents contrast greater than a predetermined value relative to at least some adjacent pixels; means for applying said processing for detecting contrast successively to the pixels of the image beginning from the pixel corresponding to the greatest distance and continuing to the first pixel found to satisfy the contrast condition; and means for associating said pixel with distance information from said map of distances.
    Type: Application
    Filed: October 19, 2005
    Publication date: June 12, 2008
    Applicants: Laboratoire Central Des Ponts Et Chaussees, Institut National De Recherche Sur Les Transports Et Leur Securite
    Inventors: Nicolas Hautiere, Raphaël Labayrade, Didier Aubert