公开(公告)号：US20240016424A1

公开(公告)日：2024-01-18

申请号：US18213461

申请日：2023-06-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Li Zhu ,  Korosh Vatanparvar ,  Michael Chan ,  Migyeong Gwak ,  Jungmok Bae ,  Jilong Kuang ,  Jun Gao

IPC: A61B5/1455

CPC classification number: A61B5/14552

Abstract: In one embodiment, a method includes accessing a sequence of images of a portion of a person's skin illuminated by ambient light and determining, from at least one of the images, a plurality of microregions in the portion of the person's skin. The method further includes determining, based on a similarity between particular microregions of the plurality of microregions, one or more regions of interest of the person's skin; determining, for each of the regions of interest, a remote photoplethysmogram (rPPG) signal based on the sequence of images; and determining, based on one or more of the rPPG signals, an estimate of an oxygen saturation in the person's blood.

公开(公告)号：US20240268711A1

公开(公告)日：2024-08-15

申请号：US18432599

申请日：2024-02-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Migyeong Gwak ,  Korosh Vatanparvar ,  Li Zhu ,  Michael Chan ,  Nafiul Rashid ,  Jungmok Bae ,  Jilong Kuang ,  Jun Gao

IPC: A61B5/113 ,  A61B5/00 ,  A61B5/08 ,  G06V40/16

CPC classification number: A61B5/113 ,  A61B5/08 ,  A61B5/7264 ,  A61B5/7275 ,  G06V40/171 ,  G06V2201/03

Abstract: A method includes capturing a video of a person's face using a camera. The method also includes determining a motion-based respiratory rate (RR) and a motion-based respiratory signal based on the video of the person's face. The method further includes determining a remote photoplethysmography (rPPG)-based RR and an rPPG-based respiratory signal based on the video of the person's face. The method also includes predicting whether the motion-based RR or the rPPG-based RR is more likely to be accurate using a trained machine learning model that receives the motion-based respiratory signal and the rPPG-based respiratory signal as input. In addition, the method includes presenting one of the motion-based RR or the rPPG-based RR based on the prediction.