Patents by Inventor Elena Boykova Ranguelova

Elena Boykova Ranguelova 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 apparatus for identifying combinations of matching regions in images
    Patent number: 8655080
    Abstract: Matching combinations of regions are identified in a first and second image of a common scene. First and second sets of image regions are first identified in the first and second image on their own. Next a search is made for potentially matching first and second regions from the first and second set. First and second geometrical parameters such as moments are computed, which provide a first order approximation of the shapes of the first and second region respectively, in terms of the size and directions of major and minor axes of ellipses. These first and second geometrical parameters may be considered to define a first and second normalizing map, which map the first and second regions to isotropic regions, wherein the ellipses become circles. A search is made for closest third and fourth regions in the first and second image with matching distances to the first and second regions in spaces obtainable by mapping locations in the first and second image according to the first and second normalizing maps.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: February 18, 2014
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventor: Elena Boykova Ranguelova
  • METHOD AND APPARATUS FOR IDENTIFYING COMBINATIONS OF MATCHING REGIONS IN IMAGES
    Publication number: 20110311148
    Abstract: Matching combinations of regions are identified in a first and second image of a common scene. First and second sets of image regions are first identified in the first and second image on their own. Next a search is made for potentially matching first and second regions from the first and second set. First and second geometrical parameters such as moments are computed, which provide a first order approximation of the shapes of the first and second region respectively, in terms of the size and directions of major and minor axes of ellipses. These first and second geometrical parameters may be considered to define a first and second normalizing map, which map the first and second regions to isotropic regions, wherein the ellipses become circles. A search is made for closest third and fourth regions in the first and second image with matching distances to the first and second regions in spaces obtainable by mapping locations in the first and second image according to the first and second normalizing maps.
    Type: Application
    Filed: December 22, 2009
    Publication date: December 22, 2011
    Applicant: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEKTNO
    Inventor: Elena Boykova Ranguelova