Justin G Chen, Age 3733 Hayward Ave, Lexington, MA 02421

2022038, Dec 1, 2022

May 3, 2022

17/735604

- Mansfield MA, US
Michael A. Eiden - Allston MA, US
William J. Peine - Ashland MA, US
Unnas W. Hussain - Albany NY, US
Justin R. Chen - Morganville NJ, US

G06T 11/00
A61B 90/00

A computer-implemented method for clinical workspace simulation includes capturing a real-world environment by an imaging device of an augmented reality headset and generating a composite view by rendering a first virtual object relative to a surgical table in the real-world environment. Captured real-world environment and the rendered first virtual object are combined in the composite view, which is displayed on a display of the augmented reality headset worn by a user.

2019003, Jan 31, 2019

Feb 28, 2017

15/445499

- Cambridge MA, US
William T. Freeman - Acton MA, US
Frederic Durand - Somerville MA, US
Myers Abraham Davis - Cambridge MA, US
Neal Wadhwa - Mountain View CA, US
Justin G. Chen - Lexington MA, US

G06T 7/20

A method and corresponding apparatus for measuring object motion using camera images may include measuring a global optical flow field of a scene. The scene may include target and reference objects captured in an image sequence. Motion of a camera used to capture the image sequence may be determined relative to the scene by measuring an apparent, sub-pixel motion of the reference object with respect to an imaging plane of the camera. Motion of the target object corrected for the camera motion may be calculated based on the optical flow field of the scene and on the apparent, sub-pixel motion of the reference object with respect to the imaging plane of the camera. Embodiments may enable measuring vibration of structures and objects from long distance in relatively uncontrolled settings, with or without accelerometers, with high signal-to-noise ratios.

2017022, Aug 3, 2017

Feb 1, 2016

15/012463

- Cambridge MA, US
Frederic Durand - Somerville MA, US
Hossein Mobahi - Saugus MA, US
Neal Wadhwa - Cambridge MA, US
Zoran Dzunic - Cambridge MA, US
Justin G. Chen - Lexington MA, US
James Long - Cambridge MA, US
Reza Mohammadi Ghazi - Cambridge MA, US
Theodericks Johannes Smit - Hillegom, NL
Sergio Daniel Kapusta - Houston TX, US

G06F 17/50
H04N 7/18
G06N 99/00
G01M 5/00
G01H 1/00

Structural health monitoring (SHM) is essential but can be expensive to perform. In an embodiment, a method includes sensing vibrations at a plurality of locations of a structure by a plurality of time-synchronized sensors. The method further includes determining a first set of dependencies of all sensors of the time-synchronized sensors at a first sample time to any sensors of a second sample time, and determining a second set of dependencies of all sensors of the time-synchronized sensors at the second sample time to any sensors of a third sample time. The second sample time is later than the first sample time, and the third sample time is later than the second sample time. The method then determines whether the structure has changed if the first set of dependencies is different from the second set of dependencies. Therefore, automated SHM can ensure safety at a lower cost to building owners.

2016026, Sep 15, 2016

Mar 11, 2016

15/068357

- Cambridge MA, US
Frederic Durand - Somerville MA, US
Justin G. Chen - Lexington MA, US

G06T 7/00
G06T 7/20

Embodiments can be used to synthesize physically plausible animations of target objects responding to new, previously unseen forces. Knowledge of scene geometry or target material properties is not required, and a basis set for creating realistic synthesized motions can be developed using only input video of the target object. Embodiments can enable new animation and video production techniques.