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A video key frame selection method

A video key frame, key frame technology, applied in selective content distribution, image communication, electrical components, etc., can solve problems such as error detection, inability to remove redundant frames well, avoid redundant frames, and achieve excellent results. Effect

Active Publication Date: 2018-09-11
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is prone to false detection, sometimes it cannot remove redundant frames well, and sometimes treats completely different key frames as redundant frames

Method used

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  • A video key frame selection method
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  • A video key frame selection method

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Embodiment Construction

[0021] A video key frame selection method of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0022] A video key frame selection method of the present invention adopts a two-step method to complete, first select a candidate key frame set from n categories of video frames, and then further select a key frame set from the candidate key frame set. A good set of keyframes usually needs to meet the following three conditions: (1) The maximum irrelevance between keyframes. Keyframes should ensure diversity and be able to represent different video contents. (2) Maximum information coverage. The selected key frames should represent the main content of the video as much as possible, which is conducive to the overall understanding of the video. (3) The key frame set length should be as short as possible. A shorter set of keyframes not only facilitates browsing, but also reduces storage requirements.

[0023] A...

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Abstract

The invention discloses a video key frame selecting method. The video key frame selecting method is characterized in that video frames can be divided into n categories by adopting a clustering method, and the categories are called F; a candidate key frame set C can be calculated; video information amount Ii represented by the candidate key frame ci can be calculated; the maximum candidate key frame ci of the video information amount Ii is selected to be the first key frame set S1; according to the formula .... the next key frame set Sk+1 can be calculated in an iterative manner; the video total information amount represented by the key frame set Sk+1 can be determined; and the key frame set Sk+1 can be output. Starting from the diversity of the key frame sets and the maximum information coverage angle, the key frame sets can be quickly and effectively selected from the classified video frames, and therefore the occurrence of the redundancy frames can be well prevented, and the lengths of the key frame sets can be determined automatically; the video key frame selecting method is simple and easy to realize, and the effect is good.

Description

technical field [0001] The invention relates to a video key frame selection method. In particular, it relates to a video key frame selection method for accurately determining the key frame of the video by using video frames that have been classified into categories. Background technique [0002] Video summarization is a method of expressing video content in a simpler form, and is a summary of target video content. Static video summarization based on keyframes is an important form of video summarization. Static video summarization usually consists of a set of key frames extracted from the original video. It has the advantages of fast browsing speed and no need to consider audio and video synchronization. advantage. A good static video summary can enable users to obtain the maximum information of the target video in the shortest time. [0003] At present, the commonly used static video summarization methods include methods based on clustering, the minimum similarity method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/8549H04N21/44H04N21/234
CPCH04N21/23418H04N21/44008H04N21/8549
Inventor 冀中樊帅飞
Owner TIANJIN UNIV
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