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Foreground/background detector

  • US 20020085096A1
  • Filed: 05/15/2001
  • Published: 07/04/2002
  • Est. Priority Date: 05/18/2000
  • Status: Active Grant
First Claim
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1. Method for detecting the foreground or background vector near a discontinuity in a vector field, characterised in that it is determined whether covering or uncovering situation exists, that at the position {right arrow over (x)}1 of the discontinuity a first position {right arrow over (x)}a in the previous (covering) or next (uncovering) vector field is calculated by shifting {right arrow over (x)}1 over the first vector at one side of the discontinuity, a second position {right arrow over (x)}b in the previous (covering) or next (uncovering) vector field is calculated by shifting {right arrow over (x)}1 over the second vector at the other side of the discontinuity and a third intermediate position between {right arrow over (x)}a and {right arrow over (x)}b is calculated, in which the vector fetched with v{right arrow over (a)}v at the third position in the previous (covering) or next (uncovering) vector field is the background vector.

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