US 12,329,511 B2
Systems and methods for video-based non-contact tidal volume monitoring
Paul S. Addison, Edinburgh (GB); Dominique Jacquel, Edinburgh (GB); and David Ming Hui Foo, Glasgow (GB)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Jun. 8, 2023, as Appl. No. 18/331,903.
Application 18/331,903 is a continuation of application No. 16/219,360, filed on Dec. 13, 2018, granted, now 11,712,176.
Claims priority of provisional application 62/614,763, filed on Jan. 8, 2018.
Prior Publication US 2023/0320622 A1, Oct. 12, 2023
Int. Cl. G06T 15/00 (2011.01); A61B 5/00 (2006.01); A61B 5/091 (2006.01); A61B 5/113 (2006.01); G06T 7/00 (2017.01); G06T 7/70 (2017.01)
CPC A61B 5/091 (2013.01) [A61B 5/0077 (2013.01); A61B 5/1135 (2013.01); A61B 5/7485 (2013.01); G06T 7/0014 (2013.01); G06T 7/70 (2017.01); G06T 2207/10016 (2013.01); G06T 2207/10028 (2013.01); G06T 2207/30196 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A video-based method of monitoring a patient, the method comprising:
receiving, using one or more processors, a video feed comprising a plurality of images captured at different times, wherein at least a portion of a patient is captured within the video feed;
determining, using the one or more processors, a region of interest (ROI) in the video feed, wherein the ROI corresponds to an identified area of the patient;
monitoring changes in the ROI over time;
generating, using the one or more processors, an unobstructed ROI, wherein generating the unobstructed ROI comprises:
applying a depth mask to the ROI, using the one or more processors;
determining, using the one or more processors, an obstructed portion of the ROI, wherein the obstructed portion of the ROI corresponds to a portion of the ROI outside of the depth mask; and
discarding from the ROI the obstructed portion of the ROI;
dynamically updating the unobstructed ROI over time; and
determining a tidal volume or a respiratory rate of the patient from the dynamically updated unobstructed ROI.