Audio/video (AV) copy detection method and device

Abstract

The invention relates to an audio / video (AV) copy detection method and device. The AV copy detection method includes: acquiring an AV image, performing decoding and pretreatment on the AV image, and performing feature extraction on the acquired audio part and the acquired video frames to obtain corresponding audio features and corresponding image features of the video frames; fusing the audio features and the image features of the video frames corresponding to the AV image to obtain AV fusion features; matching the AV fusion features based on a preset feature library of a reference video to obtain a frame set matching result; and performing copy determination and positioning on the AV image based on the frame set matching result and the reference video. Through the method for fusing the audio and the video, the robustness of the video copy detection system can be enhanced; the audio features and the video features are fused, the execution efficiency of the copy detection system can be greatly improved; and the audio and the video are analyzed at the same time, and then the positioning accuracy of copy segments can be improved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an audio and video copy detection method and device. Background technique [0002] When performing copy detection on video images, existing solutions mainly adopt content-based video copy detection methods. At present, there are mainly video copy detection schemes based on image features of video key frames and video copy detection schemes based on the combination of audio and video feature detection results, wherein: [0003] The video copy detection scheme based on the image features of video key frames, the main process includes: video decoding and preprocessing, video image feature extraction, feature indexing and retrieval, copy judgment and positioning, and finally determine whether the query video constitutes a copy, and for the judgment as a copy , judge the head and tail of the copied segment, and mark this part of the segment as a copied segment. However, this imple...

AI Technical Summary

Problems solved by technology

However, the fusion of copy detection at the result level needs to extract more features, and most of the features need to complete the entire copy detection process, so the time overhead is large and the corresponding algorithm complexity is increased.

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