Patents by Inventor Mamta Slnha

Mamta Slnha 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).

  • Sub-resolution alignment of images
    Patent number: 7409653
    Abstract: A plurality of images, including a first image and a second image having a higher resolution than the first image, are aligned by generating an oversampled cross correlation image that corresponds to relative displacements of the first and second images, and, based on the oversampled cross correlation image, determining an offset value that corresponds to a misalignment of the first and second images. The first and second images are aligned to a precision greater than the resolution of the first image, based on the determined offset value. Enhanced results are achieved by performing another iteration of generating an oversampled cross correlation image and determining an offset value for the first and second images. Generating the oversampled cross correlation image may involve generating a cross correlation image that corresponds to relative displacements of the first and second images, and oversampling the cross correlation image to generate the oversampled cross correlation image.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: August 5, 2008
    Assignee: DCG Systems, Inc.
    Inventors: Madhumita Sengupta, Mamta Slnha, Theodore R. Lundquist, William Thompson
  • Sub-resolution alignment of images
    Publication number: 20050044519
    Abstract: A plurality of images, including a first image and a second image having a higher resolution than the first image, are aligned by generating an oversampled cross correlation image that corresponds to relative displacements of the first and second images, and, based on the oversampled cross correlation image, determining an offset value that corresponds to a misalignment of the first and second images. The first and second images are aligned to a precision greater than the resolution of the first image, based on the determined offset value. Enhanced results are achieved by performing another iteration of generating an oversampled cross correlation image and determining an offset value for the first and second images. Generating the oversampled cross correlation image may involve generating a cross correlation image that corresponds to relative displacements of the first and second images, and oversampling the cross correlation image to generate the oversampled cross correlation image.
    Type: Application
    Filed: September 21, 2004
    Publication date: February 24, 2005
    Inventors: Madhumita Sengupta, Mamta Slnha, Theodore Lundquist, William Thompson