Patents by Inventor John B. Treece

John B. Treece 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).

  • Detection system and method using gradient magnitude second moment spatial variance detection
    Patent number: 8339306
    Abstract: A detection system includes a detection processor configured to receive a frame of image data that includes a range/Doppler matrix, perform a rate-of-change of variance calculation with respect to at least one pixel in the frame of image data, and compare the calculated rate-of-change of variance with a predetermined threshold to provide output data. The range/Doppler matrix may include N down-range samples and M cross-range samples. The detection processor may calculate a rate-of-change of variance over an N×M window within the range/Doppler matrix.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: December 25, 2012
    Assignee: Raytheon Company
    Inventors: Donald P. Bruyere, Ivan S. Ashcraft, John B. Treece
  • Radar imaging system and method using second moment spatial variance
    Patent number: 8212717
    Abstract: A detection system and method. The inventive system includes an arrangement for receiving a frame of image data; an arrangement for performing a variance calculation with respect to at least one pixel in the frame of image data; and an arrangement for comparing the calculated variance with a predetermined threshold to provide output data. In the illustrative embodiment, the frame of image data includes a range/Doppler matrix of N down range samples and M cross range samples. In this embodiment, the arrangement for performing a variance calculation includes an arrangement for calculating a variance over an N×M window within the range/Doppler matrix. The arrangement for performing a variance calculation includes an arrangement for identifying a change in a standard deviation of a small, localized sampling of cells. In accordance with the invention, the arrangement for performing a variance calculation outputs a variance pixel map.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: July 3, 2012
    Assignee: Raytheon Company
    Inventors: Donald P. Bruyere, Ivan S. Ashcraft, John B. Treece
  • DETECTION SYSTEM AND METHOD USING GRADIENT MAGNITUDE SECOND MOMENT SPATIAL VARIANCE DETECTION
    Publication number: 20120105275
    Abstract: A detection system includes a detection processor configured to receive a frame of image data, that includes a range/Doppler matrix, perform a rate-of-change of variance calculation with respect to at least one pixel in the frame of image data, and compare the calculated rate-of-change of variance with a predetermined threshold to provide output data. The range/Doppler matrix may include N down-range samples and M cross-range samples. The detection processor may calculate a rate-of-change of variance over an N×M window within the range/Doppler matrix.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 3, 2012
    Applicant: Raytheon Company
    Inventors: Donald P. Bruyere, Ivan S. Ashcraft, John B. Treece
  • Radar imaging system and method using gradient magnitude second moment spatial variance detection
    Patent number: 8054217
    Abstract: A detection system and method. The inventive system includes an arrangement for receiving a frame of image data; an arrangement for performing a rate of change of variance calculation with respect to at least one pixel in said frame of image data; and an arrangement for comparing said calculated rate of change of variance with a predetermined threshold to provide output data. In the illustrative embodiment, the frame of image data includes a range/Doppler matrix of N down range samples and M cross range samples. In this embodiment, the arrangement for performing a rate of change of variance calculation includes an arrangement for calculating a rate of change of variance over an N×M window within the range/Doppler matrix. The arrangement for performing a rate of change of variance calculation includes an arrangement for identifying a change in a standard deviation of a small, localized sampling of cells.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: November 8, 2011
    Assignee: Raytheon Company
    Inventors: Donald P. Bruyere, Ivan S. Ashcraft, John B. Treece