US 2022/0031191 A1 · CONTACTLESS BREATHING DETECTION METHOD AND SYSTEM THEREOF

Abstract

A contactless breathing detection method is for detecting a breathing rate of a subject. The contactless breathing detection method includes a photographing step, a capturing step, a calculating step, and a converting step. The photographing step is performed to provide a camera to photograph the subject to generate a facial image. The capturing step is performed to provide a processor module to capture the facial image to generate a plurality of feature points. The calculating step is performed to drive the processor module to calculate the feature points according to an optical flow algorithm to generate a plurality of breathing signals. The converting step is performed to drive the processor module to convert the breathing signals to generate a plurality of power spectrums, respectively. The processor module generates an index value by calculating the power spectrums, and the breathing rate is extrapolated from the index value.

Claims10

Dependent claims

A contactless breathing detection method for detecting a breathing rate of a subject, the contactless breathing detection method comprising:

performing a photographing step to provide a camera to photograph the subject to generate a facial image;
performing a capturing step to provide a processor module to capture the facial image to generate a plurality of feature points;
performing a calculating step to drive the processor module to calculate the feature points according to an optical flow algorithm to generate a plurality of breathing signals;
and
performing a converting step to drive the processor module to convert the breathing signals to generate a plurality of power spectrums, respectively, wherein the processor module generates an index value by calculating the power spectrums, and the breathing rate is extrapolated from the index value.

2 more elements

A contactless breathing detection system for detecting a breathing rate of a subject, the contactless breathing detection system comprising:

a camera photographing the subject to generate a facial image;
and
a processor module electrically connected to the camera and receiving the facial image, wherein the processor module comprises:
a capturing sub-module capturing the facial image to generate a plurality of feature points;
a calculating sub-module connected to the capturing sub-module and receiving the feature points, wherein the calculating sub-module calculates the feature points according to an optical flow algorithm to generate a plurality of breathing signals;
and
a converting sub-module connected to the calculating sub-module and receiving the breathing signals, wherein the converting sub-module converts the breathing signals to generate a plurality of power spectrums, respectively, the converting sub-module generates an index value by calculating the power spectrums, and the breathing rate is extrapolated from the index value.

4 more elements

Dependencies are inferred from the claim text.

Contactless breathing detection method and system thereof

Life of this patent

Contactless breathing detection method and system thereof

Life of this patent

Abstract

Claims10