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Alexei Harvard

from Pasadena, CA
Age ~38
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Also known as:
Aleksei Harvard
Related to:
Latonya S Davis, 49John Eric Davis, 82Angela Tomlinson, 49Anatoli HarvardGalina Harvard, 68Ekaterina Harvard, 39
Connected to:
Barbara E Harvard, 72Charmayne R Harvard, 66Clifford D Harvard, 66Mark J Harvard, 63Christian J Harvat, 46Denise M Harvat, 57Keith A Harvat, 54Aaron J Harvatine, 47Lisa M Harvatin, 43Sandra Harvath, 62

Alexei Harvard Phones & Addresses

  • Pasadena, CA
  • Petersburg, VA
  • Laguna Hills, CA
  • Richmond, VA
  • Midlothian, VA

Business Records

Name / Title
Company / Classification
Phones & Addresses
Alexei Harvard
Manager
Apersci LLC
2445 E Del Mar Blvd, Pasadena, CA 91107
7266 Jackson Pl, San Gabriel, CA 91775
Alexei Harvard
President
Lensense, Inc
Nonclassifiable Establishments
2500 E Colorado Blvd, Pasadena, CA 91107
7266 Jackson Pl, San Gabriel, CA 91775
(626) 817-9050

Publications

Us Patents

Method And Device For High-Resolution Three-Dimensional Imaging Which Obtains Camera Pose Using Defocusing

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US Patent:
20090295908, Dec 3, 2009
Filed:
May 21, 2009
Appl. No.:
12/454707
Inventors:
Morteza Gharib - San Marino CA, US
Jian Lu - Laguna Hills CA, US
Scott Hsieh - Anaheim CA, US
Francisco Pereira - Rome, IT
Alexei Harvard - Pasadena CA, US
International Classification:
H04N 13/02
G06K 9/00
US Classification:
348 46, 382154
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.

Defocusing Feature Matching System To Measure Camera Pose With Interchangeable Lens Cameras

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US Patent:
20110037832, Feb 17, 2011
Filed:
Aug 9, 2010
Appl. No.:
12/853181
Inventors:
Morteza Gharib - Altadena CA, US
Jian Lu - Monrovia CA, US
Scott Hsieh - Aroheim CA, US
Francisco Pereira - Rome, IT
Alexei Harvard - Pasadena CA, US
David Jeon - Pasadena CA, US
Assignee:
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA
International Classification:
H04N 15/00
G02B 13/16
US Classification:
348 46, 348335, 348E15001
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.

Accurate 3D Object Reconstruction Using A Handheld Device With A Projected Light Pattern

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US Patent:
20110074932, Mar 31, 2011
Filed:
Aug 27, 2010
Appl. No.:
12/869919
Inventors:
Morteza Gharib - Altadena CA, US
Jian Lu - Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Scott Hsieh - Anaheim CA, US
Assignee:
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA
International Classification:
H04N 13/02
US Classification:
348 50, 348E13074
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.

Three-Dimensional Imaging System

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US Patent:
20130235165, Sep 12, 2013
Filed:
Nov 19, 2010
Appl. No.:
13/820116
Inventors:
Morteza Gharib - Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Scott Hsieh - Monrovia CA, US
Jian Lu - Monrovia CA, US
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
H04N 13/02
US Classification:
348 50
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.

Method And Device For High-Resolution Imaging Which Obtains Camera Pose Using Defocusing

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US Patent:
20140022350, Jan 23, 2014
Filed:
Jul 15, 2013
Appl. No.:
13/942576
Inventors:
Jian Lu - Laguna Hills CA, US
Scott Hsieh - Anaheim CA, US
Alexei Harvard - Pasadena CA, US
Assignee:
CALIFORNIA INSTITUTE OF TECHNOLOGY - PASADENA CA
International Classification:
H04N 13/02
US Classification:
348 46
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.

Systems And Methods For Robust And Accurate Relative Navigation

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US Patent:
20210048542, Feb 18, 2021
Filed:
Aug 17, 2020
Appl. No.:
16/995652
Inventors:
- Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
G01S 19/51
G01S 19/48
G01S 19/25
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.

Systems, Methods, And Apparatuses For Ocular Measurements

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US Patent:
20200323427, Oct 15, 2020
Filed:
Apr 10, 2020
Appl. No.:
16/846155
Inventors:
- Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Alessio Tamborini - Pasadena CA, US
David Jeon - Pasadena CA, US
International Classification:
A61B 3/00
A61B 3/14
A61B 3/10
A61B 3/12
A61B 3/16
A61B 5/0205
A61B 3/107
A61B 5/00
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.

Three-Dimensional Imaging System

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US Patent:
20200275077, Aug 27, 2020
Filed:
Dec 4, 2018
Appl. No.:
16/209089
Inventors:
- Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Scott Hsieh - Anaheim CA, US
Jian Lu - Laguna Hills CA, US
International Classification:
H04N 13/207
H04N 13/214
G06T 7/70
G06T 7/593
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.
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Alexei Harvard from Pasadena, CA, age ~38 Get Report