Online classroom video knowledge point identification method and device

A recognition method and technology of knowledge points, applied in the field of teaching, can solve problems such as difficulty for users, finding video resources, fragmentation of recognition results, etc.

Inactive Publication Date: 2020-07-28
浙江蓝鸽科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the popularity of classroom recording and broadcasting products, online classroom video resources increase, making it difficult for users to find the video resources they are interested in from a large number of video libraries
At present, the recognition results for knowledge points of online classroom videos are fragmented, and there is a large room for improvement in recognition accuracy

Method used

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  • Online classroom video knowledge point identification method and device
  • Online classroom video knowledge point identification method and device
  • Online classroom video knowledge point identification method and device

Examples

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Embodiment Construction

[0084] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that the technical solutions claimed in this application can be realized even without these technical details and various changes and modifications based on the following implementation modes.

[0085] Explanation of some concepts:

[0086] Valid area: A closed area with a complete sub-blackboard in the blackboard area.

[0087] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manner of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0088] The first embodiment of the present application relates to a method for identifying knowledge points in online classroom videos, the process of which is as follows figure 1 As shown, the method includes the following ste...

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Abstract

The invention relates to the field of teaching, and discloses an online classroom video knowledge point identification method and device, which can accurately identify all knowledge points contained in a classroom video. The method comprises the following steps: determining a knowledge point domain of a classroom video; acquiring a classroom video, which comprises a teaching courseware part and ablackboard writing part; for the teaching courseware part, dividing the teaching courseware part into multiple sections of videos according to courseware page switching time points, and identifying afirst set of knowledge points contained in each section of video based on the knowledge point domain; for the blackboard writing part, dividing the blackboard writing part into multiple sections of videos according to blackboard writing updating time points, and identifying a second set of knowledge points contained in each section of video based on the knowledge point domain; dividing the audio corresponding to each section of video into a plurality of audio clips according to audio pause points, and identifying a third set of knowledge points contained in each audio clip based on the knowledge point domain; and calculating a set of the knowledge points contained in the classroom video according to the first set, the second set and the third set.

Description

technical field [0001] This application relates to the field of teaching, in particular to the recognition technology of online classroom video knowledge points. Background technique [0002] Online classroom videos have greatly promoted the dissemination of high-quality teaching resources and are deeply loved by users. With the popularization of classroom recording and broadcasting products, online classroom video resources increase, making it difficult for users to find video resources they are interested in from the huge video library. At present, the recognition results for knowledge points in online classroom videos are fragmented, and there is a large room for improvement in recognition accuracy. Contents of the invention [0003] The purpose of this application is to provide a method and device for identifying knowledge points in an online classroom video, which can accurately identify all the knowledge points contained in the classroom video. [0004] This applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B5/06G06F16/41G06F16/483
CPCG09B5/065G06F16/41G06F16/483
Inventor 张新华王朝选顾佳槟郭弘毅申会强吴高峰
Owner 浙江蓝鸽科技有限公司
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