Method and device for determining vital parameters
AssigneeKenkou GmbH
InventorHolger REDTEL
Life of this patent
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Abstract
A method for determining vital parameters of a human body using a device with at least one optical recording unit and a computing unit includes the following steps: recording a sequence of individual image data of a single limited area of the skin of the human body using the optical recording unit; evaluating the image data, including determining a pulse wave transit time; and determining vital parameters of the human body from the image data using the computing unit. Further, a device determines vital parameters. In addition, a method authenticates a person and a method identifies a reaction of a person.
Claims11
A method for determining vital parameters of a human body via a device, in particular a smart device, said device comprising a computing unit, said method comprising the following steps:
- recording a sequence of individual image data of area of the skin of the human body from a pictorial reproduction, in particular a television picture;
- evaluating the image data, including determining a pulse wave transit time by:
- subdividing into tiles the area of the skin reflected in the individual image data;
- determining a color, brightness and/or volume in each of the tiles of the individual image data;
- comparing the color, brightness and/or volume of the tiles in the consecutive image data of the sequence;
- determining a modification profile of the color, brightness and/or volume of a plurality of tiles located at different positions in the image and in accordance with the sequence of image data, wherein the modification profile reflects a pulse wave propagating through the area of the skin;
- temporally measuring a pulse wave velocity;
- and
- computing the pulse wave transit time from the modification profile and from the pulse wave velocity;
- evaluating the image data, including determining a pulse wave transit time by identifying the pulse wave passing through the area of the skin and by an associated temporal measurement of the pulse wave velocity;
- and
- determining one or more vital parameter(s) of the human body from the image data via the computing unit.
A method for authenticating a person via a device, in particular a smart device, the device comprising at least one computing unit, and a memory unit, the method comprising the following steps:
- recording a sequence of individual image data of a human body's area of the skin, in particular of the face, from a pictorial reproduction, in particular a television picture;
- evaluating the image data, comprising recognition of a pulse wave transit time via the computing unit via:
- subdividing into tiles the area of the skin reflected in the individual image data;
- determining a color, brightness and/or volume in each of the tiles of the individual image data;
- comparing the color, brightness and/or volume of the tiles in the consecutive image data of the sequence;
- determining a modification profile of the color, brightness and/or volume of a plurality of tiles located at different positions in the image and in accordance with the sequence of image data, wherein the modification profile reflects a pulse wave propagating through the area of the skin;
- temporally measuring a pulse wave velocity;
- and
- computing the pulse wave transit time from the modification profile and from the pulse wave velocity;
- comparing the image data with the profiles saved on the memory unit, the profiles reflecting the blood flow which is characteristic of each person;
- and
- issuing an authentication if image data match a saved profile.
A method for identifying a reaction of a person via a device, in particular a smart device, the device comprising at least a computing unit, and a memory unit, the method comprising the following steps:
- recording a sequence of individual image data of an area of the skin of a human body, in particular of a face, from a pictorial reproduction, in particular a television picture;
- evaluating the image data, including determining a pulse wave transit time by:
- subdividing into tiles the area of the skin reflected in the individual image data;
- determining a color, brightness and/or volume in each of the tiles of the individual image data;
- comparing the color, brightness and/or volume of the tiles in the consecutive image data of the sequence;
- determining a modification profile of the color, brightness and/or volume of a plurality of tiles located at different positions in the image and in accordance with the sequence of image data, wherein the modification profile reflects a pulse wave propagating through the area of the skin;
- temporally measuring a pulse wave velocity;
- and
- computing the pulse wave transit time from the modification profile and from the pulse wave velocity;
- evaluating the image data, including a recognition of a pulse wave transit time by identifying the pulse wave passing through the area of the skin and by an associated temporal measurement of the pulse wave velocity via the computing unit;
- comparing the image data with reaction patterns saved on the memory unit;
- and
- issuing a reaction if image data match a saved reaction pattern.
Dependencies are inferred from the claim text.