Patents by Inventor Yaghoub Mahdavieh

Yaghoub Mahdavieh 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).

  • Methods and apparatus for detecting objects in baggage
    Patent number: 7613316
    Abstract: A method of detecting a presence or absence of subject matter of interest, for example, sheet explosives and/or other potential threat objects is provided by various local and/or global gradient analysis methods including determining characteristics of gradient information of regions in an X-ray image to determine if the regions are associated with subject matter of interest for which detection may be desired, for example, contraband, explosives and/or other prohibited or unauthorized material.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: November 3, 2009
    Assignee: L-3 Communications Security and Detection Systems Inc.
    Inventor: Yaghoub Mahdavieh
  • Methods and apparatus for detecting objects in baggage
    Publication number: 20050036689
    Abstract: A method of detecting a presence or absence of subject matter of interest, for example, sheet explosives and/or other potential threat objects is provided by various local and/or global gradient analysis methods including determining characteristics of gradient information of regions in an X-ray image to determine if the regions are associated with subject matter of interest for which detection may be desired, for example, contraband, explosives and/or other prohibited or unauthorized material.
    Type: Application
    Filed: July 22, 2004
    Publication date: February 17, 2005
    Applicant: L-3 Communications Security and Detection Systems
    Inventor: Yaghoub Mahdavieh
  • Method for inspecting components having complex geometric shapes
    Patent number: 5345514
    Abstract: A method for inspecting a component of a gas turbine engine or the like having a plurality of similarly shaped structural portions, such as the gear teeth of a gear, the dovetail slots of a turbine disk or the like, includes the steps of: scanning a surface of at least one of the similarly shaped structural portions with an eddy current probe to induce eddy currents in the component; generating a two-dimensional image of the at least one portion from eddy current signals received during scanning, the image including a multiplicity of pixels arranged in a two-dimensional array and each pixel having a gray scale intensity responsive to the eddy current induced in the component at a component location corresponding to a position of the pixel in the matrix array; preprocessing the image to substantially reduce any signals or changes in the gray scale intensity of any pixels relative to the background pixel intensities of the image caused by geometrical characteristics and background noise common to all similarly
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: September 6, 1994
    Assignee: General Electric Company
    Inventors: Yaghoub Mahdavieh, Kristina H. V. Hedengren