Patents by Inventor Sarang C. Joshi

Sarang C. Joshi 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 system for using computed tomography to test pulmonary function
    Patent number: 7668357
    Abstract: Computed axial tomography images of different respiratory phases of lungs are obtained, where the intensity of the image measures lung density. One image is deformed to the coordinate space of the other image, and the differences between the intensity values of the other image as compared to the mapped image are evaluated as measures of ventilation.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: February 23, 2010
    Assignee: Stanford University
    Inventors: Paul John Keall, Sarang C. Joshi
  • Method and apparatus for processing images with regions representing target objects
    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
  • 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