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Video keyframe extraction method

A technology of video key frame and extraction method, applied in image data processing, instrument, character and pattern recognition, etc., can solve the problems of unrepresentative content and redundant information, so as to reduce the extraction range, simplify the calculation, and reduce the calculation amount of effect

Active Publication Date: 2018-03-27
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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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 invention discloses a video keyframe extraction method, which comprises the steps of: using a ViBe algorithm fused with an inter-frame difference method to perform moving object detection on an acquired original video sequence, so as to obtain a key video sequence containing a moving object; performing keyframe crude extraction on the key video sequence by using a global characteristic peak signal-to-noise ratio to obtain candidate keyframe sequences; and establishing global similarity of the candidate keyframe sequences by using the peak signal-to-noise ratio, establishing local similarity of the candidate keyframe sequences by using SURF feature points, and performing weighted fusion on the global similarity and the local similarity to obtain comprehensive similarity, performing self-adoptive keyframe extraction on the candidate keyframe sequences by using the comprehensive similarity, and finally acquiring a target keyframe sequence. The video keyframe extraction method providedby the invention can effectively extract the video keyframes, obviously reduce the redundant information of video data, and express the main content of the video concisely. Moreover, the video keyframe extraction method has low algorithm complexity and is suitable for real-time extraction of keyframes of surveillance videos.

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 Applications(China)
IPC IPC(8): G06K9/00G06T7/254G06T5/00G06K9/46G06K9/62
CPCG06T7/254G06T2207/10016G06V20/46G06V10/462G06V10/757G06F18/22G06F18/25G06T5/92
Inventor 罗元周寒兴张毅
Owner CHONGQING UNIV OF POSTS & TELECOMM
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