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Method for tracking the disappearance of detected logos within digital video signals

  • US 7,356,084 B2
  • Filed: 10/09/2003
  • Issued: 04/08/2008
  • Est. Priority Date: 10/09/2003
  • Status: Expired due to Fees
First Claim
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1. A method of detecting fade in an area of each of a sequence of frames comprising pixels that represent digital video images, comprising:

  • calculating a stochastic measure σ

    d of the area based on a standard deviation of pixel value differences in at least two frames among the sequence of frames; and

    detecting the fade in said area by calculating a difference between the stochastic measure σ

    d and a given noise level, such that if the difference is greater than a threshold value then fade is detected.

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