Method and apparatus for determining physiological parameters of a subject, and computer-program product thereof
AssigneeBoe Technology Group Co., Ltd.
InventorCheng Liu
Life of this patent
Estimating the term…
Abstract
A method for determining one or more physiological parameters of a subject. The method includes providing a plurality of images of a vessel of the subject in response to illumination of the vessel to light of different wavelengths; converting each of the plurality of images of the vessel into at least two grayscale images, thereby generating a plurality of first grayscale images of a first wavelength range and a plurality of second grayscale images of a second wavelength range, the first wavelength range and the second wavelength range being different from each other; and determining the one or more physiological parameters of the subject based on at least the plurality of first grayscale images and the plurality of second grayscale images.
Claims18
A method for determining one or more physiological parameters of a subject, comprising:
- providing a plurality of images of a vessel of the subject in response to illumination of the vessel to light of different wavelengths;
- converting each of the plurality of images of the vessel into at least two grayscale images, thereby generating a plurality of first grayscale images of a first wavelength range and a plurality of second grayscale images of a second wavelength range, the first wavelength range and the second wavelength range being different from each other;
- and
- determining the one or more physiological parameters of the subject based on at least the plurality of first grayscale images and the plurality of second grayscale images;
- wherein converting each of the plurality of images of the vessel into at least two grayscale images comprises:
- determining a first value of a first color component, a second value of a second color component, and a third value of a third color component for each pixel of a plurality of pixels of each of the plurality of images;
- determining a first light intensity in the first wavelength range and a second light intensity in the second wavelength range for each pixel of the plurality of pixels, based on the first value, the second value, and the third value;
- and
- generating the plurality of first grayscale images of the first wavelength range based on the first light intensity in each pixel of the plurality of pixels and the plurality of second grayscale images of the second wavelength range based on the second light intensity in each pixel of the plurality of pixels.
An apparatus for measuring one or more physiological parameters of a subject using a plurality of images of a vessel of the subject provided in response to illumination of the vessel to light of different wavelengths, comprising:
- a memory;
- and
- one or more processors;
- wherein the memory and the one or more processors are connected with each other;
- and
- the memory stores computer-executable instructions for controlling the one or more processors to:
- convert each of the plurality of images of the vessel into at least two grayscale images, thereby generating a plurality of first grayscale images of a first wavelength range and a plurality of second grayscale images of a second wavelength range, the first wavelength range and the second wavelength range being different from each other;
- and
- determine the one or more physiological parameters of the subject based on at least the plurality of first grayscale images and the plurality of second grayscale images;
- wherein the apparatus further comprises:
- a light source configured to illuminate a vessel of the subject with a compound light having at least a first light of the first wavelength range and a second light of the second wavelength range;
- and
- an image sensor configured to detecting the compound light reflected by or transmitted through a body part of the subject, thereby generating the plurality of images of the vessel of the subject.
A computer-program product comprising a non-transitory tangible computer-readable medium having computer-readable instructions thereon, the computer-readable instructions being executable by a processor to cause the processor to perform:
- converting each of a plurality of images of a vessel of a subject provided in response to illumination of the vessel to light of different wavelengths into at least two grayscale images, thereby generating a plurality of first grayscale images of a first wavelength range and a plurality of second grayscale images of a second wavelength range, the first wavelength range and the second wavelength range being different from each other;
- and
- determining one or more physiological parameters of the subject based on at least the plurality of first grayscale images and the plurality of second grayscale images;
- wherein converting each of the plurality of images of the vessel into at least two grayscale images comprises:
- determining a first value of a first color component, a second value of a second color component, and a third value of a third color component for each pixel of a plurality of pixels of each of the plurality of images;
- determining a first light intensity in the first wavelength range and a second light intensity in the second wavelength range for each pixel of the plurality of pixels, based on the first value, the second value, and the third value;
- and
- generating the plurality of first grayscale images of the first wavelength range based on the first light intensity in each pixel of the plurality of pixels and the plurality of second grayscale images of the second wavelength range based on the second light intensity in each pixel of the plurality of pixels.
Dependencies are inferred from the claim text.