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A video key frame extraction method

A technology of video key frame and extraction method, applied in image analysis, image enhancement, instrument and other directions, can solve the problems of unrepresentative content and redundant information, and achieve the effect of narrowing the extraction range, simple calculation, and reducing the amount of calculation.

Active Publication Date: 2021-03-23
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the traditional video key frame extraction method, which has many redundant information and unrepresentative content.

Method used

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  • A video key frame extraction method
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  • A video key frame extraction method

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0049] The technical scheme that the present invention solves the problems of the technologies described above is:

[0050] See attached Figure 1 , the present invention provides a method for extracting video key frames, the method comprising:

[0051] Get the video data to be processed.

[0052] Carry out moving target detection to the video data to be processed, and obtain the key video sequence H={H containing the moving target 1 ,H 2 ,···,H n}.

[0053] In this embodiment, the above-mentioned moving target detection can be understood as:

[0054] Extract the video frame sequence F={f to the original video 1 ,f 2 ,···,f p};

[0055] f in the video sequence 1 As the first frame h in the key ...

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Abstract

The present invention claims a video key frame extraction method, comprising the following steps: using the ViBe algorithm to fuse the inter-frame difference method to detect the moving target on the acquired original video sequence to obtain the key video sequence containing the moving target; using the global characteristic peak signal Roughly extract the key frame of the key video sequence to obtain the candidate key frame sequence; use the peak signal-to-noise ratio to establish the global similarity of the candidate key frame sequence, use the SURF feature points to establish the local similarity of the candidate key frame sequence, and weight the fusion of the two Obtain the global similarity, and use the comprehensive similarity to perform adaptive keyframe extraction on the candidate keyframe sequence, and finally obtain the target keyframe sequence. The method for extracting video key frames provided by the invention can effectively extract video key frames, significantly reduce redundant information of video data, and succinctly express the main content of video, and the algorithm complexity is not high, which is suitable for real-time extraction of monitoring video key frames.

Description

technical field [0001] The invention belongs to the field of video image processing, in particular to a video key frame extraction method. Background technique [0002] With the development of multimedia communication technology, video surveillance is widely used in many fields as an effective means of security prevention. Due to the all-weather video surveillance, it generates a large amount of video data, but for the user, only a small part of the video with significant changes is of interest. In order to quickly access useful video information from massive video data, researchers proposed key frame extraction technology. A key frame is a limited set of video frames representing the main content in a video sequence, and the key frame extraction technology can filter out the key frame sequence that the user is interested in from the original video. [0003] In recent years, key frame extraction has been studied to a certain extent. Zhong Qu et al. proposed an improved ke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06T7/254G06T5/00G06K9/46G06K9/62
CPCG06T5/009G06T7/254G06T2207/10016G06V20/46G06V10/462G06V10/757G06F18/22G06F18/25
Inventor 罗元周寒兴张毅
Owner CHONGQING UNIV OF POSTS & TELECOMM
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