Noncontact millimeter-wave real-time detection and tracking of heart rate on an ambulatory subject.
This paper presents a solution to an aiming problem in the remote sensing of vital signs using an integration of two systems. The problem is that to collect meaningful data with a millimeter-wave sensor, the antenna must be pointed very precisely at the subject's chest. Even small movements could make the data unreliable. To solve this problem, we attached a camera to the millimeter-wave antenna, and mounted this combined system on a pan/tilt base. Our algorithm initially finds a subject's face and then tracks him/her through subsequent frames, while calculating the position of the subject's chest. For each frame, the camera sends the location of the chest to the pan/tilt base, which rotates accordingly to make the antenna point at the subject's chest. This paper presents a system for concurrent tracking and data acquisition with results from some sample scenarios.
Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208, USA. i-mikhelson@u.northwestern.edu
Ilya V
IV
Mikhelson
Philip
P
Lee
Sasan
S
Bakhtiari
Thomas W
TW
Elmer
Aggelos K
AK
Katsaggelos
Alan V
AV
Sahakian
D000328:Adult; D000465:Algorithms; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory / Q000295:instrumentation / Q000379:methods*; D013909:Thorax / Q000502:physiology; D014741:Video Recording