Blood pressure measuring method and system
First Claim
1. A blood pressure measuring method, comprising:
- obtaining at least one video that captures a first body area and a second body area of a testee, wherein each video from the at least one video includes a plurality of frames;
extracting, from the frames of the at least one video, a plurality of gray scale values for corresponding images that capture the first body area and a plurality of gray scale values for corresponding images that capture the second body area;
drawing a pulse-wave waveform of the first body area based on the plurality of gray scale values for the corresponding images of the first body area, and drawing a pulse-wave waveform of the second body area based on the plurality of gray scale values for the corresponding images of the second body area;
determining a pulse-wave propagation time based on the pulse-wave waveform of the first body area and the pulse-wave waveform of the second body area; and
obtaining a blood pressure value of the testee based on a corresponding relation between the pulse-wave propagation time and blood pressure,wherein extracting, from the frames of the at least one video, the plurality of gray scale values for corresponding images that capture the first body area and the plurality of gray scale values for corresponding images that capture the second body area, includes;
identifying the corresponding images of the first body area and the corresponding images of the second body area from frames of the at least one video; and
extracting a plurality of gray scale values of a red channel signal in the corresponding images of the first body a plurality of gray scale values of the red channel signal in the corresponding images of the second body area from the frames of the at least one video.
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Abstract
A blood pressure measuring method and system. The method includes: obtaining at least one video that captures a first body area and a second body area of a testee; extracting multiple gray scale values for corresponding images that capture the first body area and multiple gray scale values for corresponding images that capture the second body area; drawing a pulse-wave waveform of the first body area based on the multiple gray scale values of the first body area, and drawing a pulse-wave waveform of the second body area based on the multiple gray scale values of the second body area; determining a pulse-wave propagation time based on the pulse-wave waveform of the first body area and the pulse-wave waveform of the second body area; and obtaining a blood pressure value of the testee based on a corresponding relation between the pulse-wave propagation time and blood pressure.
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Citations
20 Claims
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1. A blood pressure measuring method, comprising:
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obtaining at least one video that captures a first body area and a second body area of a testee, wherein each video from the at least one video includes a plurality of frames; extracting, from the frames of the at least one video, a plurality of gray scale values for corresponding images that capture the first body area and a plurality of gray scale values for corresponding images that capture the second body area; drawing a pulse-wave waveform of the first body area based on the plurality of gray scale values for the corresponding images of the first body area, and drawing a pulse-wave waveform of the second body area based on the plurality of gray scale values for the corresponding images of the second body area; determining a pulse-wave propagation time based on the pulse-wave waveform of the first body area and the pulse-wave waveform of the second body area; and obtaining a blood pressure value of the testee based on a corresponding relation between the pulse-wave propagation time and blood pressure, wherein extracting, from the frames of the at least one video, the plurality of gray scale values for corresponding images that capture the first body area and the plurality of gray scale values for corresponding images that capture the second body area, includes; identifying the corresponding images of the first body area and the corresponding images of the second body area from frames of the at least one video; and extracting a plurality of gray scale values of a red channel signal in the corresponding images of the first body a plurality of gray scale values of the red channel signal in the corresponding images of the second body area from the frames of the at least one video. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A blood pressure measuring system, comprising:
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a video capture device configured to obtain at least one video that captures a first body area and a second body area of a testee, wherein each video from the at least one video includes a plurality of frames; a processor; and a memory that stores instructions, wherein the instructions, when executed by the processor, cause the processor to perform operations including; extracting, from the frames of the at least one video, a plurality of gray scale values for corresponding images that capture the first body area and a plurality of gray scale values for corresponding images that capture the second body area; drawing a pulse-wave waveform of the first body area based on the plurality of gray scale values for the corresponding images of the first body area and to draw a pulse-wave waveform of the second body area based on the plurality of gray scale values for the corresponding images of the second body area; determining a pulse-wave propagation time based on the pulse-wave waveform of the first body area and the pulse-wave waveform of the second body area; and obtaining a blood pressure value of the testee based on a corresponding relation between the pulse-wave propagation time and blood pressure, wherein the instructions when executed by the processor cause the processor to extract, from the frames of the at least one video, the plurality of gray scale values for corresponding images that capture the first body area and the plurality of gray scale values for corresponding images that capture the second body area at least by; identifying the corresponding images of the first body area and the corresponding images of the second body area from frames of the at least one video; and extracting a plurality of gray scale values of a red channel signal in the corresponding images of the first body area and a plurality of gray scale values of the red channel signal in the corresponding images of the second body area from the frames of the at least one video. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification