Patents Assigned to NURALOGIX CORPORATION
  • Patent number: 10888256
    Abstract: A system and method for contactless blood pressure determination. The method includes: receiving a captured image sequence; determining, using a trained hemoglobin concentration (HC) changes machine learning model, bit values from a set of bitplanes in the captured image sequence that represent the HC changes of the subject; determining a blood flow data signal; extracting one or more domain knowledge signals associated with the determination of blood pressure; building a trained blood pressure machine learning model with a blood pressure training set, the blood pressure training set including the blood flow data signal of the one or more predetermined ROIs and the one or more domain knowledge signals; determining, using the blood pressure machine learning model trained with a blood pressure training set, an estimation of blood pressure; and outputting the determination of blood pressure.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: January 12, 2021
    Assignee: NURALOGIX CORPORATION
    Inventors: Kang Lee, Evgueni Kabakov, Phil Levy
  • Patent number: 10806390
    Abstract: A system and method for health diagnostics and more specifically to an image-capture based system and method for detecting physiological state for a subject. The system provides a remote and non-invasive approach by which to detect physiological state with a high confidence. The system enables monitoring of hemoglobin concentration changes by optical imaging and related detection systems.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: October 20, 2020
    Assignee: NURALOGIX CORPORATION
    Inventors: Kang Lee, Pu Zheng
  • Patent number: 10779760
    Abstract: A system for detecting deception is provided. The system comprises a camera, an image processing unit, and a notification device. The camera is configured to capture an image sequence of a person of interest. The image processing unit is trained to determine a set of bitplanes of a plurality of images in the captured image sequence that represent the hemoglobin concentration (HC) changes of the person, and to detect the person's invisible emotional states based on HC changes. The image processing unit is trained using a training set comprising a set of subjects for which emotional state is known. The notification device provides a notification of at least one of the person's detected invisible emotional states.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: September 22, 2020
    Assignee: NuraLogix Corporation
    Inventors: Kang Lee, Pu Zheng
  • Patent number: 10702173
    Abstract: A system and method for camera-based heart rate tracking. The method includes: determining bit values from a set of bitplanes in a captured image sequence that represent the HC changes; determining a facial blood flow data signal for each of a plurality of predetermined regions of interest (ROIs) of the subject captured by the images based on the HC changes; applying a band-pass filter of a passband approximating the heart rate to each of the blood flow data signals; applying a Hilbert transform to each of the blood flow data signals; adjusting the blood flow data signals from revolving phase-angles into linear phase segments; determining an instantaneous heart rate for each the blood flow data signals; applying a weighting to each of the instantaneous heart rates; and averaging the weighted instantaneous heart rates.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: July 7, 2020
    Assignee: NuraLogix Corporation
    Inventors: Kang Lee, Evgueni Kabakov, Phil Levy
  • Patent number: 10705603
    Abstract: A system for detecting invisible human emotion in a retail environment is provided. The system comprises a camera and an image processing unit. The camera is configured in a retail environment to capture an image sequence of a person before and during when a price of a product or service becomes visible. The image processing unit is trained to determine a set of bitplanes of a plurality of images in the captured image sequence that represent the hemoglobin concentration (HC) changes of the person, and to detect the person's invisible emotional states based on HC changes. The image processing unit is trained using a training set comprising a set of subjects for which emotional state is known.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: July 7, 2020
    Assignee: NuraLogix Corporation
    Inventors: Kang Lee, Pu Zheng
  • Patent number: 10694988
    Abstract: A system and method for health diagnostics and more specifically to an image-capture based system and method for detecting physiological state for a subject. The system provides a remote and non-invasive approach by which to detect physiological state with a high confidence. The system enables monitoring of hemoglobin concentration changes by optical imaging and related detection systems.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: June 30, 2020
    Assignee: NuraLogix Corporation
    Inventors: Kang Lee, Pu Zheng
  • Patent number: 10448847
    Abstract: A system and method for camera-based heart rate tracking. The method includes: determining bit values from a set of bitplanes in a captured image sequence that represent the HC changes; determining a facial blood flow data signal for each of a plurality of predetermined regions of interest (ROIs) of the subject captured by the images based on the HC changes; applying a band-pass filter of a passband approximating the heart rate to each of the blood flow data signals; applying a Hilbert transform to each of the blood flow data signals; adjusting the blood flow data signals from revolving phase-angles into linear phase segments; determining an instantaneous heart rate for each the blood flow data signals; applying a weighting to each of the instantaneous heart rates; and averaging the weighted instantaneous heart rates.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: October 22, 2019
    Assignee: NURALOGIX CORPORATION
    Inventors: Kang Lee, Evgueni Kabakov, Phil Levy
  • Patent number: 10390747
    Abstract: A system for detecting deception is provided. The system comprises a camera, an image processing unit, and a notification device. The camera is configured to capture an image sequence of a person of interest. The image processing unit is trained to determine a set of bitplanes of a plurality of images in the captured image sequence that represent the hemoglobin concentration (HC) changes of the person, and to detect the person's invisible emotional states based on HC changes. The image processing unit is trained using a training set comprising a set of subjects for which emotional state is known. The notification device provides a notification of at least one of the person's detected invisible emotional states.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: August 27, 2019
    Assignee: NURALOGIX CORPORATION
    Inventors: Kang Lee, Pu Zheng
  • Patent number: 10376192
    Abstract: A system and method for contactless blood pressure determination. The method includes: receiving a captured image sequence; determining, using a trained hemoglobin concentration (HC) changes machine learning model, bit values from a set of bitplanes in the captured image sequence that represent the HC changes of the subject; determining a blood flow data signal; extracting one or more domain knowledge signals associated with the determination of blood pressure; building a trained blood pressure machine learning model with a blood pressure training set, the blood pressure training set including the blood flow data signal of the one or more predetermined ROIs and the one or more domain knowledge signals; determining, using the blood pressure machine learning model trained with a blood pressure training set, an estimation of blood pressure; and outputting the determination of blood pressure.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: August 13, 2019
    Assignee: NURALOGIX CORPORATION
    Inventors: Kang Lee, Evgueni Kabakov, Phil Levy
  • Patent number: 10360443
    Abstract: A system and method for detecting subliminal facial responses of a human subject to subliminal stimuli. The method includes: receiving captured first facial response data approximately time-locked with a presentation of subliminal target stimuli to a plurality of human subjects; receiving captured second facial response data approximately time-locked with a presentation of subliminal foil stimuli to the plurality of human subjects; receiving captured unidentified facial response data to a subliminal stimulus from the target human subject; determining a target probability measure that the unidentified facial response data of the target human subject is in response to the subliminal target stimuli using a machine learning model trained with a subliminal response training set, the subliminal response training set comprising the first captured facial response data and the captured second facial response data; and outputting the target probability measure.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: July 23, 2019
    Assignee: NURALOGIX CORPORATION
    Inventors: Kang Lee, Pu Zheng, Marzio Pozzuoli
  • Publication number: 20190046099
    Abstract: A system and method for health diagnostics and more specifically to an image-capture based system and method for detecting physiological state for a subject. The system provides a remote and non-invasive approach by which to detect physiological state with a high confidence. The system enables monitoring of hemoglobin concentration changes by optical imaging and related detection systems.
    Type: Application
    Filed: February 17, 2017
    Publication date: February 14, 2019
    Applicant: NURALOGIX CORPORATION
    Inventors: Kang LEE, Pu ZHENG
  • Publication number: 20190038200
    Abstract: A system for detecting deception is provided. The system comprises a camera, an image processing unit, and a notification device. The camera is configured to capture an image sequence of a person of interest. The image processing unit is trained to determine a set of bitplanes of a plurality of images in the captured image sequence that represent the hemoglobin concentration (HC) changes of the person, and to detect the person's invisible emotional states based on HC changes. The image processing unit is trained using a training set comprising a set of subjects for which emotional state is known. The notification device provides a notification of at least one of the person's detected invisible emotional states.
    Type: Application
    Filed: February 8, 2017
    Publication date: February 7, 2019
    Applicant: NURALOGIX CORPORATION
    Inventors: Kang LEE, Pu ZHENG
  • Patent number: 10117588
    Abstract: A system and method for camera-based heart rate tracking. The method includes: determining bit values from a set of bitplanes in a captured image sequence that represent the HC changes; determining a facial blood flow data signal for each of a plurality of predetermined regions of interest (ROIs) of the subject captured by the images based on the HC changes; applying a band-pass filter of a passband approximating the heart rate to each of the blood flow data signals; applying a Hilbert transform to each of the blood flow data signals; adjusting the blood flow data signals from revolving phase-angles into linear phase segments; determining an instantaneous heart rate for each the blood flow data signals; applying a weighting to each of the instantaneous heart rates; and averaging the weighted instantaneous heart rates.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: November 6, 2018
    Assignee: NURALOGIX CORPORATION
    Inventors: Kang Lee, Evgueni Kabakov, Phil Levy