Patents by Inventor Calvin Duc Le

Calvin Duc Le 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: 9057783
    Abstract: A system and method for locating a moving target behind a wall or barrier comprising: providing a plurality of images of the region of interest; selecting a reference image from the plurality of images; forming a predetermined number of difference images by subtracting the absolute value of the pixels of the reference image from the absolute values of pixels in a predetermined number of the plurality of images; eliminating negative pixel values in the predetermined number of difference images; minimizing the side lobes to form a combined difference image for each reference frame, selecting another reference image from the plurality of images and performing the steps of forming a plurality of difference images, eliminating negative pixel values, averaging the resulting predetermined number of difference images and minimizing the side lobes for each selected reference image to form a set of combined difference images which contain the moving target signature.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: June 16, 2015
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Anthony F. Martone, Kenneth I. Ranney, Calvin Duc Le
  • Publication number: 20120182171
    Abstract: A system and method for locating a moving target behind a wall or barrier comprising: providing a plurality of images of the region of interest; selecting a reference image from the plurality of images; forming a predetermined number of difference images by subtracting the absolute value of the pixels of the reference image from the absolute values of pixels in a predetermined number of the plurality of images; eliminating negative pixel values in the predetermined number of difference images; minimizing the side lobes to form a combined difference image for each reference frame, selecting another reference image from the plurality of images and performing the steps of forming a plurality of difference images, eliminating negative pixel values, averaging the resulting predetermined number of difference images and minimizing the side lobes for each selected reference image to form a set of combined difference images which contain the moving target signature.
    Type: Application
    Filed: September 15, 2011
    Publication date: July 19, 2012
    Applicant: U.S. Government as represented by the Secretary of the Army
    Inventors: Anthony F. Martone, Kenneth I. Ranney, Calvin Duc Le