Axis Ab

Joakim Baltsén

Markus Skans

Jiandan Chen

Simon Molin

Hanna Björgvinsdóttir

Anders Johannesson

Mats Bylander

Jakob Grundström

A method, system, and apparatus related to the field of background subtraction in images is disclosed. In particular, the method, system, and apparatus is related to determining whether pixel positions in an image frame of a video sequence belongs to a background or a foreground of a captured scene using a determined level of dynamics of the pixel position.

Method, device and system for determining whether pixel positions in an image frame belong to a background or a foreground

There is provided a method and an apparatus for updating a background model used for background subtraction of an image. An image is received and each pixel in the image is classified as being foreground or background by performing background subtraction using a background model which comprises a collection of background samples for each pixel in the image. For each pixel in the image being classified as background, the background model is updated by selecting a background sample in the collection of background samples associated with the pixel which fulfills a similarity condition, and replacing the background sample which fulfills the similarity condition with image data of the pixel.

Method and apparatus for updating a background model

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Lund, Sweden

Joakim Baltsén