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Video key frame selecting method

A video key frame and key frame technology, applied in the direction of selective content distribution, image communication, electrical components, etc., can solve the problems of not being able to remove redundant frames, error detection, etc., achieve good results and avoid redundant frames Effect

Active Publication Date: 2016-06-29
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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Embodiment Construction

[0021] In the following, a method for selecting a video key frame of the present invention will be described in detail with reference to embodiments and drawings.

[0022] The video key frame selection method of the present invention is completed by using a two-step method. First, a candidate key frame set is selected from n categories of video frames, and then a key frame set is further selected from the candidate key frame set. A good set of key frames usually needs to meet the following three conditions: (1) Maximum irrelevance between key frames. The key frames must be diverse and able to represent different video content. (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 length of the key frame set is as short as possible. A short set of key frames not only facilitates browsing, but also reduces storage requirements.

[0023] A v...

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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 method for selecting video key frames. In particular, it relates to a video key frame selection method for accurately determining the key frame of the video by using the video frames that have been classified into categories. Background technique [0002] Video summary is a method of expressing video content in a more concise form, and is a summary of the target video content. A static video summary based on keyframes is an important form of video summary. A static video summary 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 clustering-based methods, minimum similarity between frames, and min...

Claims

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Application Information

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Patent Type & Authority Applications(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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