Scott Y Hsieh, Age 40Glendora, CA

2009029, Dec 3, 2009

May 21, 2009

12/454707

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

H04N 13/02
G06K 9/00

348 46, 382154

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.

2011007, Mar 31, 2011

Aug 27, 2010

12/869919

Morteza Gharib - Altadena CA, US
Jian Lu - Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Scott Hsieh - Anaheim CA, US

CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

H04N 13/02

348 50, 348E13074

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.

2013023, Sep 12, 2013

Nov 19, 2010

13/820116

Morteza Gharib - Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Scott Hsieh - Monrovia CA, US
Jian Lu - Monrovia CA, US

California Institute of Technology - Pasadena CA

H04N 13/02

348 50

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.

2014002, Jan 23, 2014

Jul 15, 2013

13/942576

Jian Lu - Laguna Hills CA, US
Scott Hsieh - Anaheim CA, US
Alexei Harvard - Pasadena CA, US

CALIFORNIA INSTITUTE OF TECHNOLOGY - PASADENA CA

H04N 13/02

348 46

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.

2022018, Jun 16, 2022

May 1, 2020

17/602962

- Oakland CA, US
Scott S. Hsieh - Anaheim CA, US

G01T 1/17
A61B 6/00

A system for charge sharing compensation for a photon counting detector. A plurality of comparators, each configured to generate comparator output data based on a threshold value, a plurality of energy bins, each of the plurality of energy bins coupled to one of the plurality of comparators, and a coincidence logic coupled to two or more of the plurality of comparators and configured to receive comparator output data associated with two or more of a plurality of pixels. The comparator output data for each pixel indicates when a signal associated with the pixel crosses a threshold value. The coincidence logic is configured to generate a coincidence output when the comparator output data for a first pixel is received within a predetermined time interval of the comparator output data for a second pixel. The system includes a coincidence counting bin coupled to the coincidence logic and configured to receive the coincidence output and generate count data based on the coincidence output.

2020027, Aug 27, 2020

Dec 4, 2018

16/209089

- Pasadena CA, US
Alexei Harvard - Pasadena CA, US
Scott Hsieh - Anaheim CA, US
Jian Lu - Laguna Hills CA, US

H04N 13/207
H04N 13/214
G06T 7/70
G06T 7/593

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.

2019012, May 2, 2019

Apr 10, 2017

16/092689

- Oakland CA, US
Scott S. Hsieh - Anaheim CA, US

A61N 5/10
A61B 6/06
A61B 6/02
A61B 6/00
G06T 11/00
G01T 1/161
G01T 1/17
G01T 7/00

A device for performing tomosynthesis in real time is described. Multiple imaging sources (such as x-ray sources) may be energized in parallel and collimated towards a field of view. Objects within the field of view cast shadows onto one or more detectors. An imaging system may read the one or more detectors and acquire multiple views corresponding to the multiple imaging sources to produce a reconstructed image of an object of interest. From this reconstructed image, a target of the radiation therapy can be located, and the delivery of the radiation can be adjusted, as needed. The approach provides a real-time tomosynthesis design that can produce enhanced contrast for guidance of, for example, lung tumor treatment. Higher frame rates can be achieved to better compensate for changes in the position of the target during radiation therapy due to, for example, respiratory or cardiac motion.

2018014, May 24, 2018

Nov 22, 2017

15/821040

- Palo Alto CA, US
Scott S. Hsieh - Anaheim CA, US
Marko Jakovljevic - Redwood City CA, US

G01N 29/07
A61B 8/00
A61B 8/08

Measuring local speed of sound for ultrasound by inducing ultrasound waves in a subject by focusing an ultrasound beam, using an ultrasound Tx transducer to propagate waves from a focal point to the surface, measuring a time of arrival of the waves using at least three single Rx transducer surface elements, signal traces recorded on individual Rx transducers are evenly sampled in time, an average speed of sound equals an arithmetic mean of local sound-speed values sampled along a wave path, each Rx transducer outputs a separate arrival time of the waves, computing a local speed of sound (c) of waves from an average speed of sound (c) using a computer that receives arrival times, wherewhere c=d/T, dis the length a tissue traveled during one sampling period T, and using cto differentiate human disease, or with ultrasound measurements to differentiate degrees of human disease.