Patents by Inventor Chaim-Gadi Wollstein

Chaim-Gadi Wollstein 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).

  • Image enhancement using virtual averaging
    Patent number: 11170480
    Abstract: The present invention is directed to systems and methods for generating virtually averaged optical coherence tomography (Oct.) images. An illustrative method can include receiving an image, identifying a first voxel of the image, and selecting a plurality of local voxels of the image. Each of the plurality of local voxels is within a defined region of the first voxel. The values of the plurality of local voxels can indicate an appearance of the local voxels in the image.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: November 9, 2021
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Hiroshi Ishikawa, Chieh-Li Chen, Joel Steven Schuman, Chaim-Gadi Wollstein
  • IMAGE ENHANCEMENT USING VIRTUAL AVERAGING
    Publication number: 20180158182
    Abstract: The present invention is directed to systems and methods for generating virtually averaged optical coherence tomography (OCT) images. An illustrative method can include receiving an image, identifying a first voxel of the image, and selecting a plurality of local voxels of the image. Each of the plurality of local voxels is within a defined region of the first voxel. The values of the plurality of local voxels can indicate an appearance of the local voxels in the image.
    Type: Application
    Filed: April 28, 2016
    Publication date: June 7, 2018
    Applicant: University of Pittsburgh - Of The Commonwealth System of Higher Education
    Inventors: Hiroshi ISHIKAWA, Chieh-Li Chen, Joel Steven Schuman, Chaim-Gadi Wollstein
  • Signal normalization among multiple optical coherence tomography devices
    Patent number: 9844315
    Abstract: The present disclosure is directed to systems and methods for normalizing an image of an eye among multiple optical coherence tomography (OCT) devices. The system can receive an OCT image and generate a normalized OCT image. The system is configured to normalize a sample density of the received image, normalize an amount of noise using a suitable noise reduction technique, normalize a distribution of signal amplitudes of the image, and then normalize a signal quality of the image. The resulting normalized image of the eye can then be used in the comparison among OCT images taken from multiple OCT devices.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: December 19, 2017
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Chieh-Li Chen, Hiroshi Ishikawa, Joel Steven Schuman, Chaim-Gadi Wollstein
  • SIGNAL NORMALIZATION AMONG MULTIPLE OPTICAL COHERENCE TOMOGRAPHY DEVICES
    Publication number: 20160100755
    Abstract: The present disclosure is directed to systems and methods for normalizing an image of an eye among multiple optical coherence tomography (OCT) devices. The system can receive an OCT image and generate a normalized OCT image. The system is configured to normalize a sample density of the received image, normalize an amount of noise using a suitable noise reduction technique, normalize a distribution of signal amplitudes of the image, and then normalize a signal quality of the image. The resulting normalized image of the eye can then be used in the comparison among OCT images taken from multiple OCT devices.
    Type: Application
    Filed: October 7, 2015
    Publication date: April 14, 2016
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Chieh-Li Chen, Hiroshi Ishikawa, Joel Steven Schuman, Chaim-Gadi Wollstein
  • Automated assessment of optic nerve head with spectral domain optical coherence tomography
    Patent number: 7992999
    Abstract: A fully automated optic nerve head assessment system, based on spectral domain optical coherence tomography, provides essential disc parameters for clinical analysis, early detection, and monitoring of progression.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: August 9, 2011
    Assignee: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Juan Xu, Chaim-Gadi Wollstein, Hiroshi Ishikawa, Joel Steven Schuman
  • AUTOMATED ASSESSMENT OF OPTIC NERVE HEAD WITH SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY
    Publication number: 20090268159
    Abstract: A fully automated optic nerve head assessment system, based on spectral domain optical coherence tomography, provides essential disc parameters for clinical analysis, early detection, and monitoring of progression.
    Type: Application
    Filed: April 21, 2009
    Publication date: October 29, 2009
    Inventors: Juan Xu, Chaim-Gadi Wollstein, Hiroshi Ishikawa, Joel Steven Schuman