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Method for quickly browsing academic live video based on key frame extraction

A technology of live video and key frames, applied in the field of video processing, can solve problems such as video length, and achieve the effect of quick viewing and comparison, and efficient learning of key knowledge

Pending Publication Date: 2022-07-22
同方知网数字出版技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. The video is very long, and some video content users do not need to pay attention to. How to quickly locate the knowledge that users want to know

Method used

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  • Method for quickly browsing academic live video based on key frame extraction
  • Method for quickly browsing academic live video based on key frame extraction
  • Method for quickly browsing academic live video based on key frame extraction

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Embodiment Construction

[0015] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the embodiments and accompanying drawings.

[0016] like figure 1 As shown, the method for quick browsing of academic live video based on key frame extraction includes the following steps:

[0017] Step 10 Real-time recording of live video: This module is mainly used for real-time backup of live video in the process of academic video live broadcast, v_backup is used for storage, and v_hand is used for processing;

[0018] Step 20 Video key frame extraction: process v_hand to extract key frames

[0019] (1) Select the video frame comparison area: avoid the influence of irrelevant factors in the image, and select an appropriate fixed area for feature extraction. For example, the user avatar in the video area will be excluded from the area;

[0020] (2) Video decoding into frames: decode th...

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PUM

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Abstract

The invention discloses a method for quickly browsing an academic live video based on key frame extraction. The method comprises the following steps: backing up the live video in real time in an academic live process; performing video key frame extraction on the backup video; and presenting the extracted video key frame to a user as the main content of a video. According to the method provided by the invention, on one hand, a user can more quickly obtain main contents of an academic live broadcast video with a longer duration under the condition of time fragmentation, and viewing and comparison are faster than video operation; and on the other hand, the user can be helped to more efficiently learn key knowledge from massive academic live videos under the condition of limited time.

Description

technical field [0001] The invention relates to the technical field of video processing, in particular to a method for quick browsing of academic live video based on key frame extraction. Background technique [0002] Academic live broadcast is a type of online live broadcast, which uses live broadcast to conduct academic communication and communication. Interested users can participate in the live interactive communication online, or watch the live broadcast after the live broadcast. Due to the impact of the epidemic in recent years, in order to avoid people gathering, live broadcast has become an important way of academic communication and communication, such as academic conferences, academic lectures, teacher teaching (online courses) and so on. With the passage of time, the amount and types of academic live broadcast videos have also begun to increase sharply, but the characteristics of academic live broadcasts are very obvious: first, academic live broadcasts use ppt o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/432H04N21/44G06F16/74G06V20/40
CPCH04N21/4325H04N21/44008G06F16/745
Inventor 于江虎张永庆李智慧相生昌顾君张宏伟
Owner 同方知网数字出版技术股份有限公司