Abstract: Various implementations of the invention compensate for “phase wandering” in tunable laser sources. Phase wandering may negatively impact a performance of a lidar system that employ such laser sources, typically by reducing a coherence length/range of the lidar system, an effective bandwidth of the lidar system, a sensitivity of the lidar system, etc. Some implementations of the invention compensate for phase wandering near the laser source and before the output of the laser is directed toward a target. Some implementations of the invention compensate for phase wandering in the target signal (i.e., the output of the laser that is incident on and reflected back from the target). Some implementations of the invention compensate for phase wandering at the laser source and in the target signal.
Type:
Grant
Filed:
July 9, 2015
Date of Patent:
February 12, 2019
Assignee:
StereoVision Imaging, Inc.
Inventors:
Richard L. Sebastian, Kendall L. Belsley, Stephan Schulz
Abstract: According to various implementations of the invention, a system for controlling a controlled device includes a lidar configured to direct at least one beam toward a target; a first controlled device, wherein the at least one beam is directed toward the target via the first controlled device; and a control system configured to control a position of the first controlled device, where the control system includes an open loop controller and a closed loop controller. The open loop controller is configured to receive a desired trajectory command signal, and generate an open loop drive signal based on the desired trajectory command signal. The closed loop controller is configured to receive an actual position signal of the first controlled device, and generate a closed loop drive signal based on the actual position signal and a control signal derived from the command signal, where the control signal accounts for group delays associated with one or more control system components.
Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.
Type:
Grant
Filed:
August 3, 2017
Date of Patent:
January 29, 2019
Assignee:
StereoVision Imaging, Inc.
Inventors:
Richard Lee Sebastian, Kendall L. Belsley
Abstract: A system and method for performing facial recognition is described. In some implementations, the system and method identify points of a three-dimensional scan that are associated with occlusions, such as eyeglasses, to a face of a target subject and remove the identified points from the three-dimensional scan.
Type:
Grant
Filed:
January 13, 2017
Date of Patent:
January 29, 2019
Assignee:
StereoVision Imaging, Inc.
Inventors:
Raghavender Reddy Jillela, Trina D. Russ
Abstract: Various implementations of the invention perform facial recognition on a target image compared against a color image from an image gallery, where the target image was acquired by an infrared-sensitive camera of a target that was illuminated with infrared light. According to various implementations of the invention, a blue component and a green component of the pixels in the color image are suppressed or eliminated, and facial recognition is performed between the target image and the color-suppressed image.
Abstract: A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory of a target and generate a three-dimensional image of the target. The system may refine the three-dimensional image by reducing the stochastic components in the transformation parameters between video frame times.
Type:
Application
Filed:
March 30, 2018
Publication date:
October 11, 2018
Applicant:
StereoVision Imaging, Inc.
Inventors:
Anatoley T. Zheleznyak, Richard L. Sebastian
Abstract: A system uses range and Doppler velocity measurements from a lidar subsystem and images from a video subsystem to estimate a six degree-of-freedom trajectory of a target. The video subsystem and the lidar subsystem may be aligned with one another by mapping the measurements of various facial features obtained by each of the subsystems to one another.
Type:
Grant
Filed:
September 21, 2016
Date of Patent:
August 14, 2018
Assignee:
StereoVision Imaging, Inc.
Inventors:
Anatoley T. Zheleznyak, Chris Roller, Gavin Rosenbush, Richard L. Sebastian
Abstract: A system uses range and Doppler velocity measurements from a lidar subsystem and images from a video subsystem to estimate a six degree-of-freedom trajectory of a target. The video subsystem and the lidar subsystem may be aligned with one another, and hence calibrated, by determining, for example, a centroid of an iris determined from the lidar subsystem and a centroid of the iris determined from the video subsystem and determining a calibration offset between the two centroids.
Type:
Grant
Filed:
January 28, 2014
Date of Patent:
July 10, 2018
Assignee:
StereoVision Imaging, Inc
Inventors:
Richard L. Sebastian, Anatoley T. Zheleznyak
Abstract: A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory (6DOF) of a target. The 6DOF transformation parameters are used to transform multiple images to the frame time of a selected image, thus obtaining multiple images at the same frame time. These multiple images may be used to increase a resolution of the image at each frame time, obtaining the collection of the superresolution images.
Type:
Grant
Filed:
March 28, 2017
Date of Patent:
May 29, 2018
Assignee:
StereoVision Imaging, Inc.
Inventors:
Richard L. Sebastian, Anatoley T. Zheleznyak
Abstract: A hand held stereoscopic system in which the focusing to the eye and CMOS photo array of near and distant objects is controlled simultaneously by moving the imaging system.
Type:
Application
Filed:
September 3, 2003
Publication date:
January 13, 2005
Applicant:
StereoVision Imaging, Inc.
Inventors:
M. Steinthal, David Sherlock, Behrokh Khoshnevis
Abstract: A simplified hand held stereoscopic imaging system in which stereoscopic recording and three-dimensional playback of objects viewed with the device is provided with a single recording element and a single playback element.
Type:
Grant
Filed:
July 14, 2000
Date of Patent:
November 26, 2002
Assignee:
Stereovision Imaging, Inc.
Inventors:
Behrokh Khoshnevis, M. Gregory Steinthal
Abstract: A simplified hand held stereoscopic imaging system in which stereoscopic recording and three-dimensional playback of objects viewed with the device is provided with a single recording element and a single playback element.
Type:
Application
Filed:
November 28, 2001
Publication date:
March 21, 2002
Applicant:
STEREOVISION IMAGING, INC.
Inventors:
Behrokh Khoshnevis, M. Gregory Steinthal