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Accurate detection of a drastic change between successive pictures

  • US 5,032,905 A
  • Filed: 05/11/1990
  • Issued: 07/16/1991
  • Est. Priority Date: 05/11/1989
  • Status: Expired due to Fees
First Claim
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1. A method of detecting a scene change between current and previous pictures which are two adjacent ones of successive pictures represented by an input digital video signal, each of said successive pictures comprising a predetermined number of picture elements, said method comprising the steps of:

  • processing said input digital video signal by using correlations between the picture elements within each of said successive pictures to produce a processed signal which represents processed results for each of said successive pictures;

    calculating a statistical distribution of said processed results in response to said processed signal; and

    collating the statistical distribution of said processed results in said current picture with the statistical distribution of said processed results in said previous picture to produce a change detection signal representative of said scene change with reference to a relationship between the statistical distribution of said processed results in said current picture and the statistical distribution of said processed results in said previous picture.

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