Method and apparatus for monitoring video copy base on content

A video copy and video technology, applied in the multimedia field, can solve the problem of high resource consumption and achieve the effect of reducing resource consumption

Active Publication Date: 2009-02-25
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0016] In order to solve the problem of high resource consumption in existing content-based video copy monitoring, an embodiment of the present invention provides a content-based video copy monitoring method, including:

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  • Method and apparatus for monitoring video copy base on content

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Embodiment Construction

[0028] In order to construct a content-based real-time copy monitoring system for video with low resource consumption, the embodiment of the invention discloses a content-based video copy monitoring method. The basic idea of ​​this method is: the establishment of the fingerprint library adopts the method of obtaining the key frame through calculation, and then constructs the video fingerprint library by the feature vector of the key frame. For the video to be monitored on the network, only some of the video frames are extracted through the network, and then the feature vectors of these video frames are extracted as the video fingerprint of the video to be monitored, and then the fingerprint data is used to match and search in the fingerprint database. Compared with the traditional video copy monitoring method, this method only needs to obtain part of the content of the video file / video stream from the network to generate the fingerprint when extracting the fingerprint of the vi...

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Abstract

The invention discloses a content-based video copy monitoring method and a device, and aims to solve the problem of higher consumption for content-based video copy monitoring resources. The method comprises the following steps: extracting a portion of video frames as the video frame to be monitored from videos to be monitored according to the predefined extract rules through the network; extracting the characteristic vector of the video frames to be monitored; and selecting the characteristic vector of a key frame similar to the video frame to be monitored from the key frame characteristic vectors of objectionable videos in a video fingerprint database, wherein the distance between the similar key frame characteristic vector and the characteristic vector of the video frames to be monitored is smaller than a given matching threshold. By selecting a portion of the video frames as the video frame to be monitored, the method can acquire the key frame without a large amount of calculation, and the video acquired through the network has less content and needs less storage space after downloading, thereby reducing the resource consumption during the monitoring.

Description

technical field [0001] The invention belongs to the field of multimedia, and in particular relates to a content-based video copy monitoring method and device. Background technique [0002] Content-based video copy detection (CBCD: Content-based Copy Detection) is an important technology developed in recent years, and it is widely used in content-based piracy detection, advertisement detection and other fields. CBCD consists of two steps: [0003] (1) According to the eigenvectors of each key frame of the sensitive video obtained by calculation, generate the fingerprint of the sensitive video, and set up the video fingerprint library; [0004] (2) Obtain the video to be monitored, generate the fingerprint of the video to be monitored according to the eigenvector of the key frame of the video to be monitored according to the calculation, and perform query matching in the video fingerprint database to determine whether there is a copy identical to the content of the video to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24G06T1/00
Inventor 张焕强尹浩黄东李铮惠雯陈文涛
Owner TSINGHUA UNIV
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