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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12582325 B1

PDFFull Text
Date of Patent:
Mar. 24, 2026

Filed:

Jun. 24, 2022

Contactless image-based blood oxygen estimation

Applicants:

University of Maryland, College Park, College Park, MD (US);

North Carolina State University, Raleigh, NC (US);

Inventors:

Min Wu, Clarksville, MD (US);

Xin Tian, College Park, MD (US);

Joshua Regi Mathew, Durham, NC (US);

Chau-Wai Wong, Apex, NC (US);

Assignees:

UNIVERSITY OF MARYLAND, COLLEGE PARK, College Park, MD (US);

NORTH CAROLINA STATE UNIVERSITY, Raleigh, NC (US);

Attorney:

SQUIRE PATTON BOGGS (US) LLP

Primary Examiner:

David Perlman

Int. Cl.
CPC ...
A61B 5/024 (2006.01); G06V 10/25 (2022.01); G06V 10/56 (2022.01); G06V 10/62 (2022.01); G06V 10/82 (2022.01); G06V 40/10 (2022.01);
U.S. Cl.
CPC ...
A61B 5/02416 (2013.01); G06V 10/25 (2022.01); G06V 10/56 (2022.01); G06V 10/62 (2022.01); G06V 10/82 (2022.01); G06V 40/11 (2022.01); G06V 40/117 (2022.01); G06V 40/15 (2022.01);
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.

Find Patent Forward Citations

Wu, Min. (2026). Contactless image-based blood oxygen estimation (U.S. Patent No. 12582325). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12582325

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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