Patents by Inventor Frezghi H. Ghebretati

Frezghi H. Ghebretati 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).

  • Estimating vehicle height using homographic projections
    Patent number: 8487993
    Abstract: Multiple homography transformations corresponding to different heights are generated in the field of view. A group of salient points within a common estimated height range is identified in a time series of video images of a moving object. Inter-salient point distances are measured for the group of salient points under the multiple homography transformations corresponding to the different heights. Variations in the inter-salient point distances under the multiple homography transformations are compared. The height of the group of salient points is estimated to be the height corresponding to the homography transformation that minimizes the variations.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: July 16, 2013
    Assignee: UT-Battelle, LLC
    Inventors: Mark F. Cunningham, Lorenzo Fabris, Timothy F. Gee, Frezghi H. Ghebretati, Jr., James S. Goddard, Thomas P. Karnowski, Klaus-peter Ziock
  • ESTIMATING VEHICLE HEIGHT USING HOMOGRAPHIC PROJECTIONS
    Publication number: 20110025841
    Abstract: Multiple homography transformations corresponding to different heights are generated in the field of view. A group of salient points within a common estimated height range is identified in a time series of video images of a moving object. Inter-salient point distances are measured for the group of salient points under the multiple homography transformations corresponding to the different heights. Variations in the inter-salient point distances under the multiple homography transformations are compared. The height of the group of salient points is estimated to be the height corresponding to the homography transformation that minimizes the variations.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 3, 2011
    Applicant: UT-BATTELLE, LLC
    Inventors: Mark F. Cunningham, Lorenzo Fabris, Timothy F. Gee, Frezghi H. Ghebretati, James S. Goddard, JR., Thomas P. Karnowski, Klaus-peter Ziock