公开(公告)号：US11337626B2

公开(公告)日：2022-05-24

申请号：US17247176

申请日：2020-12-02

申请人： NURALOGIX CORPORATION

发明人： Kang Lee ,  Evgueni Kabakov ,  Phil Levy

IPC分类号： A61B5/1455 ,  A61B5/00 ,  A61B5/021 ,  A61B5/0205 ,  A61B5/026 ,  A61B5/145 ,  G16H50/20 ,  G16H40/63 ,  G16H50/30 ,  A61B5/08 ,  A61B5/024

摘要： 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.

公开(公告)号：US10448847B2

公开(公告)日：2019-10-22

申请号：US16153214

申请日：2018-10-05

申请人： NURALOGIX CORPORATION

发明人： Kang Lee ,  Evgueni Kabakov ,  Phil Levy

IPC分类号： G06K9/00 ,  A61B5/024 ,  G06N20/00 ,  A61B5/026 ,  A61B5/1455 ,  G16H30/40 ,  G16H50/20 ,  A61B5/0255 ,  A61B5/00 ,  G06T7/00 ,  A61B5/145

摘要： 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.

公开(公告)号：US10888256B2

公开(公告)日：2021-01-12

申请号：US16406665

申请日：2019-05-08

申请人： NURALOGIX CORPORATION

发明人： Kang Lee ,  Evgueni Kabakov ,  Phil Levy

IPC分类号： A61B5/1455 ,  A61B5/00 ,  A61B5/021 ,  A61B5/0205 ,  A61B5/026 ,  A61B5/145 ,  G16H50/20 ,  G16H40/63 ,  G16H50/30 ,  A61B5/08 ,  A61B5/024

摘要： 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.

公开(公告)号：US10117588B2

公开(公告)日：2018-11-06

申请号：US15923242

申请日：2018-03-16

申请人： NURALOGIX CORPORATION

发明人： Kang Lee ,  Evgueni Kabakov ,  Phil Levy

IPC分类号： G06K9/00 ,  A61B5/024 ,  A61B5/026 ,  A61B5/1455 ,  G06F15/18 ,  G16H30/40 ,  G16H50/20 ,  A61B5/0255 ,  G06T7/00 ,  A61B5/00 ,  A61B5/145

摘要： 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.

公开(公告)号：US10702173B2

公开(公告)日：2020-07-07

申请号：US16505834

申请日：2019-07-09

申请人： NURALOGIX CORPORATION

发明人： Kang Lee ,  Evgueni Kabakov ,  Phil Levy

IPC分类号： G06K9/00 ,  A61B5/024 ,  G06N20/00 ,  A61B5/1455 ,  G16H30/40 ,  G16H50/20 ,  A61B5/026 ,  A61B5/0255 ,  A61B5/00 ,  G06T7/00 ,  A61B5/145

摘要： 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.

公开(公告)号：US10376192B2

公开(公告)日：2019-08-13

申请号：US15923225

申请日：2018-03-16

申请人： NURALOGIX CORPORATION

发明人： Kang Lee ,  Evgueni Kabakov ,  Phil Levy

IPC分类号： A61B5/1455 ,  A61B5/00 ,  A61B5/021 ,  A61B5/0205 ,  A61B5/026 ,  A61B5/145 ,  G16H50/20 ,  G16H40/63 ,  G16H50/30 ,  A61B5/08 ,  A61B5/024

摘要： 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.