CN115883867A - Test question video generation method based on courseware attached video, storage medium and equipment - Google Patents
Test question video generation method based on courseware attached video, storage medium and equipment Download PDFInfo
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Abstract
The invention discloses a test question video generation method, a storage medium and equipment based on courseware-attached videos, which are used for acquiring teaching video data based on courseware, wherein the teaching video data comprises video resources and corresponding courseware information; identifying and extracting test question data from courseware page contents; acquiring courseware page content and page switching data in video resources; determining timestamp information for switching to enter the courseware content and timestamp information for switching to leave the courseware content in the video resources, and accordingly intercepting video clips corresponding to the courseware content; and binding the obtained video clips and the test question data in the video clips into a specified database in an associated manner. The invention utilizes the teaching video with courseware to construct the database of the test question data and the video association storage, so that the user can accurately retrieve the corresponding video resources through the test question data, and various online lesson video resources are more fully utilized.
Description
Technical Field
The invention relates to the technical field of intelligent education, in particular to a test question video generation method based on courseware attached videos, a storage medium and equipment.
Background
With the continuous development of intelligent education, the intelligent correction, identification and search functions of test questions are gradually matured, but compared with the retrieval content of static texts, the learning capacity of students can be really and quickly improved, the function of retrieving video resources corresponding to knowledge points through test question pictures for learning also appears at present, but test questions corresponding to one knowledge point are various, the number of test questions in the current question bank is increased frequently, the video resources are required to be accurately searched through the test questions, and an effective video resource and test question association binding scheme is still required.
In addition, the online classroom video greatly promotes the spread of high-quality teaching resources, and is popular with users. With the popularization of class recording and broadcasting products, the number of online class video resources is increased, so that users are difficult to find interesting video resources from a huge number of video libraries, and various online class video resources are not efficiently utilized.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a test question video generation method, a storage medium and equipment based on courseware videos.
In order to achieve the purpose, the invention adopts the following technical scheme:
a test question video generation method based on courseware attached videos comprises the following specific processes:
s1, acquiring teaching video data based on courseware, wherein the teaching video data comprises video resources and corresponding courseware information; the courseware information comprises the page number of each page in courseware and courseware page content;
s2, identifying and extracting test question data from the courseware page content of each page acquired in the step S1;
s3, acquiring courseware page content and page switching data in video resources:
s3.1, performing page number identification on each frame in the video resource, and matching courseware page content corresponding to each frame from the courseware information obtained in the step S1 by using the identified page number;
s3.2, detecting a courseware page content switching event in the video resource, and acquiring page number information of the contents of the current courseware page, timestamp information of the contents of the current courseware page and timestamp information of the contents of the current courseware page when the courseware content switching event occurs;
s4, according to the result of recognizing the test data from the courseware page content in the step S2, determining the page number of the courseware page content with the test data, according to the page switching data obtained in the step S3, determining the timestamp information of the contents switched into the courseware page in the video resource and the timestamp information switched out of the contents of the courseware page, and accordingly intercepting the video segment corresponding to the contents of the courseware page; and binding the obtained video clips and the test question data in the video clips into a specified database in an associated manner.
Further, in step S2, the test question data includes test question text, and if the test question includes a picture, the test question data should also include a picture of the test question.
Further, the test question data further includes answer text and parsing text.
Still further, in step S2, the test question data is identified from the courseware page content by any one of the following methods:
(1) Identifying and positioning the area of the test block by using a preset test feature map or keywords, and then extracting test data from the test block;
(2) Training a test question recognition model through a large number of test question samples, recognizing test question blocks in the contents of a courseware page by using the test question recognition model, and extracting test question data from the test question blocks;
(3) Manually marking test question tags in the contents of courseware pages of each page, identifying test question blocks through the test question tags, and extracting test question data from the test question blocks.
Further, in step S3.2, the process of detecting the courseware page content switching event in the video resource is as follows: and comparing every two adjacent frames in the video resource, and judging that a courseware page content switching event occurs between the two frames when the difference value of the two adjacent frames is greater than a preset threshold value.
Further, in step S3.2, the page numbers of two adjacent frames in the video resource are compared, and when the page numbers of two adjacent frames change, it is determined that a courseware page content switching event has occurred between the two frames.
The invention also provides a computer-readable storage medium having stored therein a computer program which, when executed by a processor, implements the above-described method.
The invention also provides a computer apparatus comprising a processor and a memory for storing a computer program; the processor is configured to implement the above method when executing the computer program.
The invention has the beneficial effects that: the invention utilizes the teaching video with courseware to construct the database of the test question data and the video association storage, so that the user can accurately retrieve the corresponding video resources through the test question data, and various online lesson video resources are more fully utilized.
Detailed Description
The present invention will be further described below, and it should be noted that the present embodiment is based on the technical solution, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
The embodiment provides a test question video generation method based on a courseware video, which specifically comprises the following steps:
s1, acquiring teaching video data based on courseware, wherein the teaching video data comprises video resources and corresponding courseware information; the courseware information comprises the page number of each page in courseware and courseware page content;
s2, identifying and extracting test question data from the courseware page content of each page acquired in the step S1; the test question data at least comprises test question texts, answer texts, analysis texts and the like; if the test questions contain pictures, the test question data also contains the pictures of the test questions.
Specifically, in this embodiment, the test question data is identified from the courseware page content in any one of the following ways:
(1) And extracting test question blocks by using the test question feature graph or the keywords. For example, a preset test question feature diagram, or a region of a test question block is matched and positioned through keywords such as example question 1, solutions, formulas and the like, and then test question data are extracted from the test question block;
(2) Firstly, training a test question recognition model through a large number of test question samples, recognizing test question blocks in the content of a courseware page by using the test question recognition model, and then extracting test question data from the test question blocks;
(3) Manually marking test question tags in the contents of the courseware pages of each page, identifying test question blocks through the test question tags (such as drawing rectangular frames on the test question blocks) and then extracting test question data from the test question blocks.
S3, obtaining courseware page content and page switching data in video resources:
s3.1, performing page number identification on each frame in the video resource, and matching courseware page content corresponding to each frame from the courseware information obtained in the step S1 by using the identified page number; many techniques for page identification are well developed, and are not described herein.
And S3.2, detecting a courseware page content switching event in the video resource, and acquiring page number information of the contents of the current courseware page, timestamp information of the contents of the current courseware page and timestamp information of the contents of the current courseware page when the courseware page content switching event occurs.
Specifically, one way to detect a courseware page content switching event in a video resource is: and comparing every two adjacent frames in the video resource, and judging that a courseware page content switching event occurs between the two frames when the difference value of the two adjacent frames is greater than a preset threshold value. The other mode is as follows: and comparing the page numbers of two adjacent frames in the video resource, and judging that a courseware page content switching event occurs between the two frames when the page numbers of the two adjacent frames change.
S4, according to the result of recognizing the test data from the courseware page content in the step S2, determining the page number of the courseware page content with the test data, according to the page switching data obtained in the step S3, determining the timestamp information of the contents switched into the courseware page in the video resource and the timestamp information switched out of the contents of the courseware page, and accordingly intercepting the video segment corresponding to the contents of the courseware page; and binding the obtained video clips and the test question data in the video clips into a specified database in an associated manner.
The current online lesson video is generally accompanied by courseware, and the method of the embodiment utilizes the teaching video with courseware to construct a database with test questions and video associated storage, so that a user can accurately retrieve corresponding video resources through test question data.
Various corresponding changes and modifications can be made by those skilled in the art based on the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.
Claims (8)
1. A test question video generation method based on courseware videos is characterized by comprising the following specific processes:
s1, acquiring teaching video data based on courseware, wherein the teaching video data comprises video resources and corresponding courseware information; the courseware information comprises the page number of each page in courseware and courseware page content;
s2, identifying and extracting test question data from the courseware page content of each page acquired in the step S1;
s3, obtaining courseware page content and page switching data in video resources:
s3.1, performing page number identification on each frame in the video resource, and matching courseware page content corresponding to each frame from the courseware information obtained in the step S1 by using the identified page number;
s3.2, detecting a courseware page content switching event in the video resource, and acquiring page number information of the contents of the current courseware page, timestamp information of the contents of the current courseware page and timestamp information of the contents of the current courseware page when the courseware content switching event occurs;
s4, according to the result of recognizing the test data from the courseware page content in the step S2, determining the page number of the courseware page content with the test data, according to the page switching data obtained in the step S3, determining the timestamp information of the courseware page content switched into the video resource and the timestamp information of the courseware page content switched out of the video resource, and accordingly intercepting the video segment corresponding to the courseware page content; and binding the obtained video clips and the test question data in the video clips into a specified database in an associated manner.
2. The method according to claim 1, wherein in step S2, the test question data includes test question text, and if the test question includes a picture, the test question data should also include a picture of the test question.
3. The method of claim 2, wherein the test question data further comprises answer text and parsing text.
4. The method of claim 1, wherein in step S2, the test question data is identified from the courseware page content by any one of the following methods:
(1) Identifying and positioning the area of the test block by using a preset test feature map or keywords, and then extracting test data from the test block;
(2) Training a test question recognition model through a large number of test question samples, recognizing test question blocks in the contents of a courseware page by using the test question recognition model, and extracting test question data from the test question blocks;
(3) Manually marking test question tags in the contents of courseware pages of each page, identifying test question blocks through the test question tags, and extracting test question data from the test question blocks.
5. The method according to claim 1, wherein in step S3.2, the process of detecting the courseware page content switching event in the video resource is as follows: and comparing every two adjacent frames in the video resource, and judging that a courseware page content switching event occurs between the two frames when the difference value of the two adjacent frames is greater than a preset threshold value.
6. The method according to claim 1, wherein in step S3.2, the page numbers of two adjacent frames in the video resource are compared, and when the page numbers of the two adjacent frames are changed, it is determined that a courseware page content switching event has occurred between the two frames.
7. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 6.
8. A computer device comprising a processor and a memory, the computer device comprising
The memory is used for storing a computer program; the processor being adapted to execute the computer program,
carrying out the method of any one of claims 1 to 6.
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