Patents by Inventor Jonathan Dowdall

Jonathan Dowdall 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).

  • Patent number: 7831074
    Abstract: The present invention is directed to a method for populating a database with a set of images of an anatomical structure. The database is used to perform appearance matching in image pairs of the anatomical structure. A set of image pairs of anatomical structures is received, where each image pair is annotated with a plurality of location-sensitive regions that identify a particular aspect of the anatomical structure. Weak learners are iteratively selected and an image patch is identified. A boosting process is used to identify a strong classifier based on responses to the weak learners applied to the identified image patch for each image pair. The responses comprise a feature response and a location response associated with the image patch. Positive and negative image pairs are generated. The positive and negative image pairs are used to learn a similarity function. The learned similarity function and iteratively selected weak learners are stored in the database.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: November 9, 2010
    Assignee: Siemens Corporation
    Inventors: Shaohua Kevin Zhou, Jie Shao, Jonathan Dowdall, Adrian Barbu, Bogdan Georgescu, Dorin Comaniciu
  • Publication number: 20070237370
    Abstract: The present invention is directed to a method for populating a database with a set of images of an anatomical structure. The database is used to perform appearance matching in image pairs of the anatomical structure. A set of image pairs of anatomical structures is received, where each image pair is annotated with a plurality of location-sensitive regions that identify a particular aspect of the anatomical structure. Weak learners are iteratively selected and an image patch is identified. A boosting process is used to identify a strong classifier based on responses to the weak learners applied to the identified image patch for each image pair. The responses comprise a feature response and a location response associated with the image patch. Positive and negative image pairs are generated. The positive and negative image pairs are used to learn a similarity function. The learned similarity function and iteratively selected weak learners are stored in the database.
    Type: Application
    Filed: October 10, 2006
    Publication date: October 11, 2007
    Applicant: SIEMENS CORPORATE RESEARCH INC
    Inventors: Shaohua Zhou, Jie Shao, Jonathan Dowdall, Adrian Barbu, Bogdan Georgescu, Dorin Comaniciu