Patents by Inventor Miriam Cha

Miriam Cha 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).

  • Combined intensity and coherent change detection in images
    Patent number: 10037477
    Abstract: Described embodiments detect changes in a scene over time using first and second images of the scene. A non-coherent intensity change detector detects large-scale changes between the first image and the second image and generates a large-scale change value for pairs of corresponding pixel locations in the first and second images. If the large-scale change value for a given pair of pixel locations reaches a threshold, a coherent change detector is used to detect small-scale changes between the first and second images. A small-scale change value is generated for the given pairs of pixel locations in the images. A composite change value is generated by combining the large-scale change value and the small-scale change value for each pixel pair. The change thresholds are used to determine whether a change in the scene has occurred over the time period.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: July 31, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Miriam Cha, Rhonda D. Phillips, Patrick J. Wolfe, Christ D. Richmond
  • Combined Intensity And Coherent Change Detection In Images
    Publication number: 20170061217
    Abstract: Described embodiments detect changes in a scene over time using first and second images of the scene. A non-coherent intensity change detector detects large-scale changes between the first image and the second image and generates a large-scale change value for pairs of corresponding pixel locations in the first and second images. If the large-scale change value for a given pair of pixel locations reaches a threshold, a coherent change detector is used to detect small-scale changes between the first and second images. A small-scale change value is generated for the given pairs of pixel locations in the images. A composite change value is generated by combining the large-scale change value and the small-scale change value for each pixel pair. The change thresholds are used to determine whether a change in the scene has occurred over the time period.
    Type: Application
    Filed: June 20, 2016
    Publication date: March 2, 2017
    Applicant: Massachusetts Institute of Technology
    Inventors: Miriam Cha, Rhonda D. Phillips, Patrick J. Wolfe, Christ D. Richmond