Patents by Inventor Alexei Harvard

Alexei Harvard 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).

  • Publication number: 20210048542
    Abstract: A system and method for determining the relative position of a mobile device in relation to other devices or objects in an operational space. The systems and methods operate on a tight fusion of raw data from a number of different sensors such that carrier spaced integer ambiguities can be quickly and accurately resolved, especially in GNSS signal degradation scenarios.
    Type: Application
    Filed: August 17, 2020
    Publication date: February 18, 2021
    Applicant: California Institute of Technology
    Inventors: Vincenzo Capuano, Alexei Harvard, Soon-Jo Chung
  • Publication number: 20200323427
    Abstract: Systems, methods and apparatuses are provided for the measurement of intraocular pressure. These systems, methods and apparatuses can include an imaging apparatus for capturing two- or three-dimensional images or video of a patient's eye. An image reconstruction based on the captured images or video can be performed, and measurements can be taken of blood vessel features, curvature metrics, or distances between point pairs. In some embodiments, blood pressure measurements can also be taken synchronously with the captured images or video. From these measurements, a relationship between certain medical condition (e.g., elevated intraocular pressure, heart arrhythmia) and the extracted metrics can be established.
    Type: Application
    Filed: April 10, 2020
    Publication date: October 15, 2020
    Inventors: Morteza Gharib, Alexei Harvard, Alessio Tamborini, David Jeon
  • Publication number: 20200275077
    Abstract: Hardware and software configurations, optionally, for performing profilometry of an object are disclosed. An advantageous imaging device is described. An advantageous approach to determining imager position is also described. Each aspect described may be used independently of the other. Moreover, the teaching may find use in other fields including velocimetry, etc.
    Type: Application
    Filed: December 4, 2018
    Publication date: August 27, 2020
    Inventors: Morteza Gharib, Alexei Harvard, Scott Hsieh, Jian Lu
  • Patent number: 10742957
    Abstract: Hardware and software configurations, optionally, for performing profilometry of an object are disclosed. An advantageous imaging device is described. An advantageous approach to determining imager position is also described. Each aspect described may be used independently of the other. Moreover, the teaching may find use in other fields including velocimetry, etc.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: August 11, 2020
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Alexei Harvard, Scott Hsieh, Jian Lu
  • Publication number: 20190174117
    Abstract: Hardware and software configurations, optionally, for performing profilometry of an object are disclosed. An advantageous imaging device is described. An advantageous approach to determining imager position is also described. Each aspect described may be used independently of the other. Moreover, the teaching may find use in other fields including velocimetry, etc.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 6, 2019
    Inventors: Morteza Gharib, Alexei Harvard, Scott Hsieh, Jian Lu
  • Patent number: 10182223
    Abstract: Hardware and software configurations, optionally, for performing profilometry of an object are disclosed. An advantageous imaging device is described. An advantageous approach to determining imager position is also described. Each aspect described may be used independently of the other. Moreover, the teaching may find use in other fields including velocimetry, etc.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: January 15, 2019
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Alexei Harvard, Scott Hsieh, Jian Lu
  • Patent number: 9596452
    Abstract: A lens and aperture device for determining 3D information. An SLR camera has a lens and aperture that allows the SLR camera to determine defocused information.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: March 14, 2017
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Francisco Pereira, Alexei Harvard, David Jeon
  • Patent number: 9247235
    Abstract: A method and device for high-resolution three-dimensional (3-D) imaging which obtains camera pose using defocusing is disclosed. The device comprises a lens obstructed by a mask having two sets of apertures. The first set of apertures produces a plurality of defocused images of the object, which are used to obtain camera pose. The second set of optical filters produces a plurality of defocused images of a projected pattern of markers on the object. The images produced by the second set of apertures are differentiable from the images used to determine pose, and are used to construct a detailed 3-D image of the object. Using the known change in camera pose between captured images, the 3-D images produced can be overlaid to produce a high-resolution 3-D image of the object.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: January 26, 2016
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Francisco Pereira, Alexei Harvard
  • Publication number: 20150319326
    Abstract: A method of performing a three-dimensional (3D) scan of an object includes applying an optical contrast powder to the object and illuminating the object with light. First and second two-dimensional (2D) color image data corresponding to the object is generated. First and second 2D monochrome image data corresponding to the object is generated using the first and second 2D color image data. 3D data corresponding to the object is generated using the first and second monochrome 2D image data. Color 3D image data corresponding to the object is generated by adding color information to the 3D data. The color 3D image data is displayed.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 5, 2015
    Applicant: Arges Imaging, Inc.
    Inventors: Joachim Pfeiffer, Jian Lu, Alexei Harvard, Bjoern Voss, Thiel Frank
  • Publication number: 20140368617
    Abstract: A lens and aperture device for determining 3D information. An SLR camera has a lens and aperture that allows the SLR camera to determine defocused information.
    Type: Application
    Filed: June 13, 2014
    Publication date: December 18, 2014
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Francisco Pereira, Alexei Harvard, David Jeon
  • Patent number: 8773507
    Abstract: A lens and aperture device for determining 3D information. An SLR camera has a lens and aperture that allows the SLR camera to determine defocused information.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: July 8, 2014
    Assignee: California Institute of Technology
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Francisco Pereira, Alexei Harvard, David Jeon
  • Patent number: 8773514
    Abstract: A camera has a lens and aperture device for determining 3D information. A projector projects an optical pattern toward a surface. The camera has at least two off-axis apertures thereon, arranged to obtain an image of the projected pattern including defocused information. The camera is movable between different positions to image the surface from said different positions, and the projector is at a specified angle of at least 5° relative to said camera. A processor carries out a first operation using information received through the apertures to determine a pose of said camera, and to determine three dimensional information about the object based on a degree of deformation of said optical pattern on said surface indicative of a three dimensional surface. An embodiment projects a grid of laser dots and uses laser-dot defocusing for approximate Z and thus grid correspondence, which can greatly increase the working depth of the system.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: July 8, 2014
    Assignee: California Institute of Technology
    Inventors: Morteza Gharib, Jian Lu, Alexei Harvard, Scott Hsieh
  • Publication number: 20140022350
    Abstract: A method and device for high-resolution three-dimensional (3-D) Imaging which obtains camera pose using defocusing is disclosed. The device comprises a lens obstructed by a mask having two sets of apertures. The first set of apertures produces a plurality of defocused images of the object which are used to obtain camera pose. The second set of optical filters produces a plurality of defocused images of a projected pattern of markers on the object. The images produced by the second set of apertures are differentiable from the images used to determine pose, and are used to construct a detailed 3-D image of the object. Using the known change in camera pose between captured images, the 3-D images produced can be overlaid to produce a high-resolution 3-D image of the object.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 23, 2014
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Alexei Harvard
  • Publication number: 20130235165
    Abstract: Hardware and software configurations, optionally, for performing profilometry of an object are disclosed. An advantageous imaging device is described. An advantageous approach to determining imager position is also described. Each aspect described may be used independently of the other. Moreover, the teaching may find use in other fields including velocimetry, etc.
    Type: Application
    Filed: November 19, 2010
    Publication date: September 12, 2013
    Applicant: California Institute of Technology
    Inventors: Morteza Gharib, Alexei Harvard, Scott Hsieh, Jian Lu
  • Patent number: 8514268
    Abstract: A method and device for high-resolution three-dimensional (3-D) imaging which obtains camera pose using defocusing is disclosed. The device comprises a lens obstructed by a mask having two sets of apertures. The first set of apertures produces a plurality of defocused images of the object, which are used to obtain camera pose. The second set of optical filters produces a plurality of defocused images of a projected pattern of markers on the object. The images produced by the second set of apertures are differentiable from the images used to determine pose, and are used to construct a detailed 3-D image of the object. Using the known change in camera pose between captured images, the 3-D images produced can be overlaid to produce a high-resolution 3-D image of the object.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: August 20, 2013
    Assignee: California Institute of Technology
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Francisco Pereira, Alexei Harvard
  • Publication number: 20110074932
    Abstract: A lens and aperture device for determining 3D information. A projector projects an optical pattern toward a surface. The camera has at least two off-axis apertures thereon, arranged to obtain an image of the projected pattern including defocused information. The camera is movable between different positions to image the surface from said different positions, and the projector is at a specified angle of at least 5° relative to said camera. A processor carries out a first operation using information received through the apertures to determine a pose of said camera, and to determine three dimensional information about the object based on a degree of deformation of said optical pattern on said surface indicative of a three dimensional surface. An embodiment projects a grid of laser dots and uses laser-dot defocusing for approximate Z and thus grid correspondence, which can greatly increase the working depth of the system.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 31, 2011
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Jian Lu, Alexei Harvard, Scott Hsieh
  • Publication number: 20110037832
    Abstract: A lens and aperture device for determining 3D information. An SLR camera has a lens and aperture that allows the SLR camera to determine defocused information.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 17, 2011
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Francisco Pereira, Alexei Harvard, David Jeon
  • Publication number: 20090295908
    Abstract: A method and device for high-resolution three-dimensional (3-D) imaging which obtains camera pose using defocusing is disclosed. The device comprises a lens obstructed by a mask having two sets of apertures. The first set of apertures produces a plurality of defocused images of the object, which are used to obtain camera pose. The second set of optical filters produces a plurality of defocused images of a projected pattern of markers on the object. The images produced by the second set of apertures are differentiable from the images used to determine pose, and are used to construct a detailed 3-D image of the object. Using the known change in camera pose between captured images, the 3-D images produced can be overlaid to produce a high-resolution 3-D image of the object.
    Type: Application
    Filed: May 21, 2009
    Publication date: December 3, 2009
    Inventors: Morteza Gharib, Jian Lu, Scott Hsieh, Francisco Pereira, Alexei Harvard