Patents by Inventor Balasubramaniam Ravichandran

Balasubramaniam Ravichandran 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 apparatuses for performing object tracking using graphs
    Patent number: 10007852
    Abstract: Solutions for object tracking problems are presented by gathering images using one or more cameras, processing the gathered images to generate a directed acyclic graph, using the directed acyclic graph to determine a path cover that achieves maximum weight and satisfies one or more positive or negative constraints, and using the path cover to solve the object tracking problem. A first set of solutions utilizes trellis graphs, a second set of solutions employs a greedy approach, and a third set of solutions uses search algorithms.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: June 26, 2018
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Lingji Chen, Balasubramaniam Ravichandran
  • Automated track projection bias removal using frechet distance and road networks
    Patent number: 9977123
    Abstract: A system and method for projecting target tracks produced by a remote tracker onto a surface of the Earth to obtain projected tracks is provided. Projection bias in a projected track from the remote tracker projected onto a planar map is removed by computing a discrete Frechet distance from a polygonal curve associated with a track derived from the remote tracker to a corresponding polygonal curve on the planar map. A correspondence between the projected track and a track on the planar map is automatically established. A projection bias is removed based on the correspondence.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: May 22, 2018
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Lingji Chen, Balasubramaniam Ravichandran
  • METHODS AND APPARATUSES FOR PERFORMING OBJECT TRACKING USING GRAPHS
    Publication number: 20170213089
    Abstract: Solutions for object tracking problems are presented by gathering images using one or more cameras, processing the gathered images to generate a directed acyclic graph, using the directed acyclic graph to determine a path cover that achieves maximum weight and satisfies one or more positive or negative constraints, and using the path cover to solve the object tracking problem. A first set of solutions utilizes trellis graphs, a second set of solutions employs a greedy approach, and a third set of solutions uses search algorithms.
    Type: Application
    Filed: May 27, 2016
    Publication date: July 27, 2017
    Applicant: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Lingji Chen, Balasubramaniam Ravichandran
  • Automated Track Projection Bias Removal Using Frechet Distance and Road Networks
    Publication number: 20150338515
    Abstract: A system and method for projecting target tracks produced by a remote tracker onto a surface of the Earth to obtain projected tracks is provided. Projection bias in a projected track from the remote tracker projected onto a planar map is removed by computing a discrete Frechet distance from a polygonal curve associated with a track derived from the remote tracker to a corresponding polygonal curve on the planar map. A correspondence between the projected track and a track on the planar map is automatically established. A projection bias is removed based on the correspondence.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 26, 2015
    Inventors: Lingji Chen, Balasubramaniam Ravichandran