Method and device for detecting audio/video copy based on copy cells

A technology of copying unit and detection method, which is applied in the field of audio and video processing, can solve the problems that digital watermarks are not exclusive, digital watermarks are difficult to resist re-encoding attacks, and increase audio and video production processes, etc.
CN104504307AInactive Publication Date: 2015-04-08PEKING UNIV
2 Cites 30 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2015-04-08
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method and a device for detecting audio / video copy based on copy cells. The method mainly comprises the steps of extracting key frames in an inquiry audio / video and a reference audio / video, calculating the similarity between the key frame of the inquiry audio / video and the key frame of the reference audio / video, searching for the most similar copy cells in the inquiry audio / video and the reference audio / video based on the similarity, and judging whether copy is present in the inquiry audio / video and the reference audio / video based on the similarity of the most similar copy cells in the inquiry audio / video and the reference audio / video. The method for detecting audio / video copy based on the copy cells is capable of judging whether the inquiry audio / video is the copy of the given reference audio / video accurately and quickly and performing repeatability or infringement judgment on the inquiry audio / video on the basis. Besides, according to the method, the process of audio / video making does not need to be changed and the quality of the audio / video is not reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] Embodiments of the present invention relate to the technical field of audio and video processing, and in particular, to an audio and video copy detection method and device based on a copy unit. Background technique

[0002] With the continuous development of social economy and cultural level, the scale of the global film and television industry is also expanding rapidly. On the one hand, the scale of the traditional film and television industry (such as film and television) still maintains a steady growth. For example, in 2011, the total box office of movies in Mainland China was 13.115 billion yuan, and by 2013, this value had reached 21.769 billion yuan. Yuan (28.8% average annual growth rate); on the other hand, the scale of the online film and television industry (such as: online video website, mobile video) has a greater growth than the traditional film and television industry, for example, in the first quarter of 2011 The scale of China's online...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More