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:
Dec. 11, 2018
Filed:
May. 05, 2017
Axis Ab, Lund, SE;
Joakim Baltsen, Lund, SE;
Axis AB, Lund, SE;
Abstract
There is provided a method and an apparatus for updating a background model used for background subtraction of an image. The method comprises: receiving an image (), and classifying a region () in the image as foreground by performing background subtraction using a background model (). The background model comprises a collection of background samples () for each pixel () in the image. The collection of background samples is arranged in a list of background images (). The method further comprises: replacing image contents in the region () of the image which is classified as foreground by image contents of a corresponding region () in a background image in the list, and adding the image to the list of background images by rearranging a collection of pointers () which each points to one of the background images in the list, such that one of the pointers instead points to the image.