Method and apparatus for generating a reference image from an im

Details Method and apparatus for generating a reference image from an im Method and apparatus for generating a reference image from an im

1996-10-30

1999-10-05

Lee, Richard

Television

Image signal processing circuitry specific to television

Motion dependent key signal generation or scene change...

348149, H04N 514

Patent

active

059632720

ABSTRACT:
A locally-adaptive method and apparatus for constructing a reference image containing only the background from an image sequence containing moving or temporarily-stationary objects. Specifically, the apparatus contains a sample mask selector and a reference updater. The selector generates a mask which is used by the updated to perform updating of a reference image using only portions of the input image that contain background imagery. The updater enhances the masking function using a statistical analysis to avoid updating pixels using non-background imagery.

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