US 12,041,359 B2
Method and system for activity detection with obfuscation
Nabil I. Alshurafa, Chicago, IL (US); and Josiah D. Hester, Evanston, IL (US)
Assigned to Northwestern University, Evanston, IL (US)
Filed by Northwestern University, Evanston, IL (US)
Filed on Apr. 27, 2022, as Appl. No. 17/730,858.
Application 17/730,858 is a continuation of application No. 17/010,560, filed on Sep. 2, 2020, granted, now 11,336,823.
Claims priority of provisional application 62/895,290, filed on Sep. 3, 2019.
Prior Publication US 2022/0279119 A1, Sep. 1, 2022
Int. Cl. H04N 23/80 (2023.01); G06T 5/50 (2006.01); G06T 5/73 (2024.01); G06T 7/194 (2017.01); H04N 5/272 (2006.01); H04N 5/76 (2006.01); H04N 7/18 (2006.01); H04N 23/10 (2023.01); H04N 23/51 (2023.01); H04N 23/54 (2023.01); H04N 23/90 (2023.01)
CPC H04N 23/80 (2023.01) [G06T 5/50 (2013.01); G06T 5/73 (2024.01); G06T 7/194 (2017.01); H04N 5/272 (2013.01); H04N 5/76 (2013.01); H04N 7/18 (2013.01); H04N 23/10 (2023.01); H04N 23/51 (2023.01); H04N 23/54 (2023.01); H04N 23/90 (2023.01); G06T 2207/10024 (2013.01); G06T 2207/10048 (2013.01); G06T 2207/20221 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A camera system comprising:
a camera configured to capture first video of a scene in the form of first image frames;
an infrared sensor configured to capture second video of the scene in the form of second image frames; and
a processor in communication with the camera and the infrared sensor, wherein the processor is configured to:
monitor a temperature of the scene with the infrared sensor or a temperature sensor;
identify a change in the temperature of the scene;
recalculate an infrared sensor threshold for the infrared sensor based at least in part on the change in the temperature of the scene;
determine an intensity threshold for pixels in the second video;
identify, based at least in part on the intensity threshold, an item of interest in the scene; and
obfuscate one or more portions of the scene that correspond to the item of interest.