Systems, devices, and methods for determining breath rate using an optical flow sensing
AssigneeSTMicroelectronics International N.V.
InventorsKien Wee Mike Quek, Tomohiro Yonemaru, Matteo Maravita
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Abstract
Various embodiments provide systems, devices and methods for determining breath rate by capturing a plurality of image frames from a region of interest, determining a subset of image frames that include image frames having largest movement values in the plurality of image frames, determining a first image frame in the subset of image frames and a last image frame in the subset of image frames. In various embodiments, the systems, devices and methods determine the breath rate using the first image frame and the last image frame in the subset of image frames and a rate of capturing the plurality of image frames.
Claims20
A breath rate detection method comprising:
- capturing, by an optical flow sensor, a plurality of image frames from a region of interest;
- determining, by a computing device, a movement value for each image frame of the plurality of image frames;
- selecting, by a computing device, a subset of image frames where the movement value corresponding to each of the plurality of image frames in the subset of image frames is more than the movement value corresponding to any other frame in the plurality of image frames;
- and
- determining, by the computing device, a breath rate using the subset of image frames and a rate of capturing the plurality of image frames.
An apparatus for detecting breath rate, the apparatus comprising at least one processor and at least one non-transitory memory including computer coded instructions thereon, the computer coded instructions, with the at least one processor, cause the apparatus to:
- capture a plurality of image frames from a region of interest;
- determine a movement value for each image frame of the plurality of image frames;
- select a subset of image frames where the movement value corresponding to each of the image frames in the subset of image frames is more than the movement value corresponding to any other frame in the plurality of image frames;
- and
- determine the breath rate using the subset of image frames and a rate of capturing the plurality of image frames.
A breath rate detection method comprising:
- capturing, by an optical flow sensor, a plurality of image frames from a region of interest;
- determining, by a computing device, a subset of image frames that include image frames having largest movement values in the plurality of image frames;
- determining a first image frame in the subset of image frames and a last image frame in the subset of image frames;
- and
- determining, by the computing device, a breath rate using the first image frame and the last image frame in the subset of image frames and a rate of capturing the plurality of image frames.
Dependencies are inferred from the claim text.