Patents by Inventor Siri Dovner

Siri Dovner 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 arrangement for calibration of cameras
    Patent number: 10687044
    Abstract: A method and arrangement for calibrating stereo cameras. A first image from a first camera is received, and a second image is received from a second camera, the first image and the second image comprise an overlap. One or more candidate points of the first image and of the second image are determined in the overlap. The candidate points of the first image are matched with the candidate points of the second image and pairs of corresponding candidate points are determined. A homography of the first camera is calculated based on the pairs of corresponding candidate points and a homography of the second camera is calculated based on the pairs of corresponding candidate points. The first camera and the second camera are calibrated by adjusting an intrinsic parameter or an extrinsic parameter of each respective camera, based on the calculated homography of each respective camera.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: June 16, 2020
    Assignee: Cognimatics AB
    Inventors: Rikard Berthilsson, Siri Dovner, Håkan Ardö
  • METHOD AND ARRANGEMENT FOR CALIBRATION OF CAMERAS
    Publication number: 20180124380
    Abstract: A method and arrangement for calibrating stereo cameras in a vehicle is disclosed. A first image from a first camera is received, and a second image is received from a second camera, the first image and the second image comprise an overlap. One or more candidate points of the first image and of the second image are determined in the overlap. The candidate points of the first image are matched with the candidate points of the second image and pairs of corresponding candidate points are determined. A homography of the first camera is calculated based on the pairs of corresponding candidate points and a homography of the second camera is calculated based on the pairs of corresponding candidate points. The first camera and the second camera are calibrated by adjusting an intrinsic parameter or an extrinsic parameter of each respective camera, based on the calculated homography of each respective camera.
    Type: Application
    Filed: May 20, 2016
    Publication date: May 3, 2018
    Applicant: Cognimatics AB
    Inventors: Rikard Berthilsson, Siri Dovner, Ardö Håkan