Method for shot change detection for a video clip
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United States of America Patent
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Issued Date -
May 27, 2004
app pub date -
Nov 25, 2002
filing date -
Nov 25, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for shot change detection of a video clip. The method comprises the steps of receiving two P frames (or an I and P frame) and B frames therebetween, inversely quantizing their macroblocks to obtain energy values corresponding to the forward and backward references of the macroblocks, for each of the frames, respectively calculating the numbers of the macroblocks having the energy values corresponding to the forward and backward references below a threshold, and a forward and backward reference ratio of the two numbers to the total number of the macroblocks, and locating a shot change among the frames using the ratios.
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