Patents by Inventor Gary E. Christensen

Gary E. Christensen 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 generating consistent image registration
    Patent number: 6611615
    Abstract: The present invention provides a method and apparatus for generating inversely related forward and reverse image transformations in any image registration technique with ambiguous correspondence based upon the joint estimation of the transformation. Accordingly, two image data sets are received, a source and a target. Current sets of forward and reverse displacement fields are initialized. From the current set of forward and reverse displacement fields, the consistent forward transformation and the consistent reverse transformation are jointly estimated. These transformations are outputted.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: August 26, 2003
    Assignee: University of Iowa Research Foundation
    Inventor: Gary E. Christensen
  • Method and apparatus for image registration
    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
  • Rapid convolution based large deformation image matching via landmark and volume imagery
    Patent number: 6408107
    Abstract: An apparatus and method for image registration of a template image with a target image with large deformation. The apparatus and method involve computing a large deformation transform based on landmark manifolds, image data or both. The apparatus and method are capable of registering images with a small number of landmark points. Registering the images is accomplished by applying the large deformation transform.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: June 18, 2002
    Inventors: Michael I. Miller, Sarang C. Joshi, Gary E. Christensen
  • Rapid convolution based large deformation image matching via landmark and volume imagery
    Patent number: 6226418
    Abstract: An apparatus and method for image registration of a template image with a target image with large deformation. The apparatus and method involve computing a large deformation transform based on landmark manifolds, image data or both. The apparatus and method are capable of registering images with a small number of landmark points. Registering the images is accomplished by applying the large deformation transform.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: May 1, 2001
    Assignee: Washington University
    Inventors: Michael I. Miller, Sarang C. Joshi, Gary E. Christensen
  • Method and apparatus for image registration
    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