Patents by Inventor Jonathan Chappelow

Jonathan Chappelow 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).

  • Ambient light suppression using color space information to derive pixel-wise attenuation factors
    Patent number: 9774838
    Abstract: A method of ambient light suppression in an imaging system, including illuminating leaves of a multi-leaf collimator (MLC) with a first light of a lighting system inside a housing of the MCL, receiving ambient light inside the housing of the MLC through an aperture of the MLC, and capturing, using an imaging system having optics situated inside the housing of the MLC, an image of the leaves of the MLC illuminated with the first light and the ambient light. The method may further include, suppressing the ambient light in the first image to generate a second image of the leaves of the MLC and detecting a feature of the leaves of the MLC in the second image.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: September 26, 2017
    Assignee: ACCURAY INCORPORATED
    Inventors: Jonathan Chappelow, Petr Jordan, Jian Gao, Sarbjit Singh, Trevor Laing, Calvin Maurer
  • AMBIENT LIGHT SUPPRESSION USING COLOR SPACE INFORMATION TO DERIVE PIXEL-WISE ATTENUATION FACTORS
    Publication number: 20160366385
    Abstract: A method of ambient light suppression in an imaging system, including illuminating leaves of a multi-leaf collimator (MLC) with a first light of a lighting system inside a housing of the MCL, receiving ambient light inside the housing of the MLC through an aperture of the MLC, and capturing, using an imaging system having optics situated inside the housing of the MLC, an image of the leaves of the MLC illuminated with the first light and the ambient light. The method may further include, suppressing the ambient light in the first image to generate a second image of the leaves of the MLC and detecting a feature of the leaves of the MLC in the second image.
    Type: Application
    Filed: December 17, 2015
    Publication date: December 15, 2016
    Inventors: Jonathan Chappelow, Petr Jordan, Jian Gao, Sarbjit Singh, Trevor Laing, Calvin Maurer
  • Combined feature ensemble mutual information image registration
    Patent number: 8442285
    Abstract: This invention relates to medical image registration. Specifically, the invention relates to a combined feature ensemble mutual information (COFEMI) for robust inter-modal, inter-protocol image registration.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: May 14, 2013
    Assignees: The Trustees of The University of Pennsylvania, Rutgers, The State University of New Jersey
    Inventors: Anant Madabhushi, Jonathan Chappelow, Michael Feldman, John E. Tomaszewski
  • COMBINED FEATURE ENSEMBLE MUTUAL INFORMATION IMAGE REGISTRATION
    Publication number: 20100177944
    Abstract: This invention relates to medical image registration. Specifically, the invention relates to a combined feature ensemble mutual information (COFEMI) for robust inter-modal, inter-protocol image registration.
    Type: Application
    Filed: April 1, 2008
    Publication date: July 15, 2010
    Inventors: Anant Madabhushi, Jonathan Chappelow, Michael Feldman, John E. Tomaszewski