Video fingerprint extraction method based on SURF algorithm
A video fingerprint and extraction method technology, which is applied in computing, computer components, special data processing applications, etc., can solve the problems that video accuracy, robustness, and real-time performance cannot be taken into account at the same time, so as to reduce the amount of calculation and improve Accuracy and robustness, taking into account real-time effects
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[0045] figure 1 It is a flow chart of the video fingerprint extraction method based on the SURF algorithm in the present invention.
[0046] In this example, if figure 1 Shown, a kind of video fingerprint extraction method based on SURF of the present invention comprises the following steps:
[0047] S1), video feature extraction
[0048] S1.1), the selection of the candidate key frame: select the candidate key frame in the video by taking the step size as Δt and extracting one frame in T seconds;
[0049] In this embodiment, Δt=1sec, T=2sec; that is, one frame is extracted within two seconds, and the interval is one second;
[0050] S1.2), use the SURF algorithm to detect the feature points of the candidate key frame and calculate the number, discard the candidate key frame with the number of feature points less than M=200; discard the video candidate key with the number of feature points greater than or equal to M=200 Frame is as video key frame, and M is a constant, can...
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