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.:
Date of Patent:
Feb. 28, 2023
Filed:
Nov. 18, 2020
Axis Ab, Lund, SE;
Stefan Lundberg, Lund, SE;
Jonas Hjelmström, Lund, SE;
AXIS AB, Lund, SE;
Abstract
Methods and apparatus, including computer program products, for determining a presence of an object located close to a lens () of a camera monitoring a scene. A first infrared illumination source () arranged to illuminate the scene from a first angle is activated. A first image () is acquired by the image capturing device (). The first infrared illumination source () is deactivated, and a second infrared illumination source () arranged to illuminate the scene from a second angle is activated. A second image () is acquired by the image capturing device (). Intensity information of the first image () and the second image () is compared to determine the presence of an object located close to the lens ().