Patents by Inventor Sang-Jin Ryu

Sang-Jin Ryu 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).

  • Apparatus for synthesizing three-dimensional images to visualize surroundings of vehicle and method thereof
    Patent number: 9451236
    Abstract: The present invention relates to three-dimensional visualization of the surrounding images of a vehicle, and comprises the steps of: enabling a plurality of wide angle cameras provided at a vehicle to receive a plurality of photographed images for reference patterns formed on the ground; extracting feature points from the photographed reference patterns and estimating a relative location and an installation angle of each camera using the known physical location information of the extracted feature points; obtaining optical parameters comprising an optical center of a lens for correcting lens distortion using the photographed images and mapping each image on a surface of a Gaussian sphere using the obtained optical center; changing an angle and distance such that the Gaussian sphere and the real reference patterns correspond to each other using the relative location and the installation angle of the estimated camera and arranging the images in a three-dimensional virtual space; and obtaining a three-dimensiona
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 20, 2016
    Assignee: VADAS, LTD.
    Inventors: Jun-Seok Lee, Byung-Chan Jeon, Gyu-Ro Park, Sang-Jin Ryu, Byeong-Moon Song
  • APPARATUS FOR SYNTHESIZING THREE-DIMENSIONAL IMAGES TO VISUALIZE SURROUNDINGS OF VEHICLE AND METHOD THEREOF
    Publication number: 20140125774
    Abstract: The present invention relates to three-dimensional visualization of the surrounding images of a vehicle, and comprises the steps of: enabling a plurality of wide angle cameras provided at a vehicle to receive a plurality of photographed images for reference patterns formed on the ground; extracting feature points from the photographed reference patterns and estimating a relative location and an installation angle of each camera using the known physical location information of the extracted feature points; obtaining optical parameters comprising an optical center of a lens for correcting lens distortion using the photographed images and mapping each image on a surface of a Gaussian sphere using the obtained optical center; changing an angle and distance such that the Gaussian sphere and the real reference patterns correspond to each other using the relative location and the installation angle of the estimated camera and arranging the images in a three-dimensional virtual space; and obtaining a three-dimensiona
    Type: Application
    Filed: June 23, 2011
    Publication date: May 8, 2014
    Applicant: Vadas, Ltd.
    Inventors: Jun-Seok Lee, Byung-Chan Jeon, Gyu-Ro Park, Sang-Jin Ryu, Byeong-Moon Song