Patent US12582325B2 for Contactless Blood Oxygen Estimation
Summary
The USPTO has granted patent US12582325B2 for a contactless image-based blood oxygen estimation method. The patent, assigned to the University of Maryland, College Park, describes a system that estimates blood oxygen saturation using camera-captured images and spatial-temporal data analysis.
What changed
The United States Patent and Trademark Office (USPTO) has issued patent US12582325B2, titled 'Contactless image-based blood oxygen estimation.' This patent, assigned to the University of Maryland, College Park, details a method for estimating blood oxygen saturation levels using images or videos captured by a computing device's camera. The technology involves extracting a region of interest, performing feature extraction, and analyzing spatial and temporal data across multiple color channels to determine oxygen saturation.
This patent grant is primarily of interest to entities involved in medical device development and healthcare technology. While it does not impose new regulatory obligations on existing entities, it represents a technological advancement in non-invasive health monitoring. Companies in the medical device sector, particularly those developing diagnostic tools or wearable health technology, should be aware of this patented technology for potential licensing or competitive analysis.
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Mar 27, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Contactless image-based blood oxygen estimation
Grant US12582325B2 Kind: B2 Mar 24, 2026
Assignee
UNIVERSITY OF MARYLAND, COLLEGE PARK
Inventors
Min Wu, Xin Tian, Joshua Regi Mathew, Chau-Wai Wong
Abstract
Systems, methods, apparatuses, and computer program products for contactless image-based blood oxygen estimation. A method may include receiving an image or video of a part of a subject captured by a camera of a computing device. The method may also include extracting a region of interest of the part of the subject from the image or video. The method may further include performing feature extraction of the region of interest. In addition, the method may include estimating a blood oxygen saturation level of the subject based on a spatial and temporal data analysis of more than two color channels. Feature extraction and estimation of the blood oxygen saturation level may include implementing a combination of spatial averaging, color channel mixing, and temporal trend analysis.
CPC Classifications
A61B 5/02416 G06V 10/25 G06V 40/11 G06V 40/117 G06V 10/56 G06V 10/82 G06V 40/15 G06V 10/62
Filing Date
2022-06-24
Application No.
17849414
Claims
18
Named provisions
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