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• W4380451000 abstract "In 2019, the COVID-19 pandemic became a serious issue around the world. Low blood oxygen is the most important symptom of COVID-19. However, many patients have no obvious respiratory symptoms and exhibit silent hypoxemia, which is typically not noticed by patients but can cause severe damage. Hypoxemia is also related to high-altitude illness, highlighting the importance of detecting hypoxemia for travelers in high-altitude areas. The most commonly used device for monitoring blood oxygen remains difficult to access for the general population. To address this problem, a few camera-based methods have been proposed. Nevertheless, these approaches are generally not robust and have not been evaluated completely. Therefore, we conduct a pilot study to show the feasibility of camera-based SpO <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> estimation, and then propose a contact-free system by which to measure SpO <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> using a general RGB camera. We adopt a k-nearest neighbor model as the backbone algorithm. For a comprehensive evaluation, we compiled two SpO <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> datasets: one collected at an altitude of 3,150 meters, and the other collected at 102 meters above sea level. Sixty subjects participated in the experiments, which included a mobile phone, a webcam, and an industrial camera. In a leave-one-subject-out validation, the proposed method respectively yields a mean absolute error of 4.39%, 4.45%, and 4.22% using the three cameras. In general, the proposed approach outperforms the benchmark algorithms. To our best knowledge, this is the first work to utilize real high-attitude data to address camera-based SpO <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> measurement." @default.
• W4380451000 created "2023-06-14" @default.
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• W4380451000 date "2023-01-01" @default.
• W4380451000 modified "2023-09-27" @default.
• W4380451000 title "Peripheral oxygen saturation measurement using an RGB camera" @default.
• W4380451000 doi "https://doi.org/10.1109/jsen.2023.3284196" @default.
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