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Scheme for detecting shot boundaries in compressed video data using inter-frame/inter-field prediction coding and intra-frame/intra-field coding

  • US 5,911,008 A
  • Filed: 04/29/1997
  • Issued: 06/08/1999
  • Est. Priority Date: 04/30/1996
  • Status: Expired due to Fees
First Claim
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1. A method for detecting a shot boundary from an input video data compressed by a coding scheme using both an inter-frame/inter-field prediction coding scheme and an intra-frame/intra-field coding scheme, comprising the steps of:

  • (a) calculating a Predictive-picture (P picture) change from a P picture sequence in the input video data which is compressed by an inter-frame/inter-field forward direction prediction coding scheme, according to coded data contained in the P picture sequence;

    (b) calculating an Intra-picture (I picture) change from an I picture sequence in the input video data which is compressed by an intra-frame/intra-field coding scheme, according to coded data contained in the I picture sequence; and

    (c) detecting a shot boundary by evaluating both the P picture change calculated at the step (a) and the I picture change calculated at the step (b).

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