Background maintenance of an image sequence

Details Background maintenance of an image sequence Background maintenance of an image sequence

2005-10-22

2009-02-10

Le, Brian Q (Department: 2624)

Image analysis

Image segmentation

C382S190000, C382S194000

Reexamination Certificate

active

07489817

ABSTRACT:
An image background maintenance system and method for maintaining a background model of an image sequence by processing on multiple spatial scales. These multiple spatial scales include a pixel scale, a regional scale and a frame scale. The image sequence undergoes pixel processing that determines a current background model and provides an initial pixel assignment as either a background or a foreground pixel. Region processing further refines the initial pixel assignments by considering relationships between pixels and possibly reassigning pixels. Frame processing further refines the current background model by determining whether a substantial change has occurred in the actual background and, if so, providing a more accurate background model.

REFERENCES:
patent: 5287200 (1994-02-01), Sullivan et al.
patent: 6335985 (2002-01-01), Sambonsugi et al.

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