Patents by Inventor Ulf Grenander

Ulf Grenander 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: 6754374
    Abstract: An apparatus and method for processing images with regions representing target objects involves registering a first and a second image, where the second image contains a target object. The method comprises the steps of identifying a region in the second image containing one or more image data elements representing the target object, transforming the second image to reduce the size of the region containing the target object, and registering the first image and the second image. Another embodiment comprises the steps of identifying a region in the second image containing one or more image data elements representing a target object. After identifying this region, the first and second images are registered using a first transform component that filters one or more data elements in the second image that are contained in the identified region, and a second transform component that includes one or more data elements in the second image that are contained in the identified region.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: June 22, 2004
    Assignee: Surgical Navigation Technologies, Inc.
    Inventors: Michael I. Miller, Ulf Grenander, Sarang C. Joshi
  • Patent number: 6611630
    Abstract: A method and apparatus for classifying population states based on shape characterizations of sub-manifolds of points, curves, surfaces, or sub-volumes. A structure is examined using, for example, clinical imaging techniques such as CT, MRI, or Ultrasound. The image is then subjected to a transform function to generate a map of the new image. The new image map which contains information regarding the shape of the structure is compared to average shapes characterizing population groups. If the shape of the new image falls within a best match probability with an average shape, the new image is classified as a member of the population characterized by the average shape. Each population represents a specific classification state. Thus, if the shape of the new structure resembles the average shape of a population group, the new shape is classified as the same population state as the other structures displaying the same shape characteristics.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: August 26, 2003
    Assignees: Washington University, Brown University Research Foundation
    Inventors: Michael I. Miller, John G. Csenansky, Ulf Grenander, Sarang Joshi, John W. Haller
  • Patent number: 6553152
    Abstract: An apparatus and method for image registration involves computing a first transform based on landmark manifolds, using a distance measure, computing a second transform from the distance measure and the first transform. Registering the images is accomplished by applying the second transform.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: April 22, 2003
    Assignee: Surgical Navigation Technologies, Inc.
    Inventors: Michael I. Miller, Gary E. Christensen, Sarang C. Joshi, Ulf Grenander
  • Patent number: 6009212
    Abstract: An apparatus and method for image registration involves computing a first transform based on landmark manifolds, using a distance measure, computing a second transform from the distance measure and the first transform. Registering the images is accomplished by applying the second transform.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: December 28, 1999
    Assignee: Washington University
    Inventors: Michael I. Miller, Gary E. Christensen, Sarang C. Joshi, Ulf Grenander