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A Method for Evaluating Students' Enthusiasm Based on Network Classroom

An evaluation method and network classroom technology, applied in the direction of instruments, data processing applications, acquisition/recognition of eyes, etc., can solve problems such as poor learning quality

Active Publication Date: 2021-08-17
NANJING PLASO NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, online classrooms also have certain disadvantages, such as poor learning quality, and learning quality is particularly important in certain stages of education

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] S1. Live video recording and uploading of students during their learning process;

[0053] S2. Extracting and uploading at least one frame of live video at a set time interval;

[0054] S3. Preprocessing the image extracted in the above steps, the preprocessing includes grayscale processing and normalization processing, so as to obtain the preprocessed image I[x,y] of the face;

[0055] S4. Establish a vertical grayscale integral projection curve for the preprocessed image I[x, y], and obtain the rising point n of the minimum function value in the continuous rise in the vertical grayscale integral projection curve 1 , and the descent point n of the smallest function value in the continuous descent 2 ;

[0056] S5, the above-mentioned rising point n 1 As the left boundary of the face image, the above descending point n 2 Crop as the right boundary of face recognition to obtain a cropped face image;

[0057] S6. Perform binarization processing on the cropped face ima...

Embodiment 2

[0061] S1. Live video recording and uploading of students during their learning process;

[0062] S2. Extracting and uploading at least one frame of live video at a set time interval;

[0063] S3. Preprocessing the image extracted in the above steps, the preprocessing includes grayscale processing and normalization processing, so as to obtain the preprocessed image I[x,y] of the face;

[0064] S4. Establish a vertical grayscale integral projection curve for the preprocessed image I[x, y], and define the vertical grayscale integral projection curve function of the preprocessed image I[x, y] on the image M×N as , and use the M×D image block to move in the preprocessed image I[x,y] to calculate the value of the vertical gray integral projection curve function, the calculation formula is , wherein M is the height of the preprocessing image I, N and D are the width of the preprocessing image, and the D value is 5, in the vertical grayscale integral projection curve;

[0065] S5...

Embodiment 3

[0070] S1. Live video recording and uploading of students during their learning process;

[0071] S2. Extracting and uploading at least one frame of live video at a set time interval;

[0072] S3. Preprocessing the image extracted in the above steps, the preprocessing includes grayscale processing and normalization processing, so as to obtain the preprocessed image I[x,y] of the face;

[0073] S4. Establish a vertical grayscale integral projection curve for the preprocessed image I[x, y], and define the vertical grayscale integral projection curve function of the preprocessed image I[x, y] on the image M×N as , and use the M×D image block to move in the preprocessed image I[x,y] to calculate the value of the vertical gray integral projection curve function, the calculation formula is , wherein M is the height of the preprocessing image I, N and D are the width of the preprocessing image, and the D value is 5, in the vertical grayscale integral projection curve;

[0074] S5...

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PUM

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Abstract

The invention discloses a method for evaluating student enthusiasm in a network-based classroom, which is characterized in that it comprises the following steps: S1, live video recording and uploading of the students during the learning process of the students; S2, extracting frame images; S3, obtaining face Preprocess the image I[x,y]; S4, establish a vertical gray-scale integral projection curve, and obtain the rising point n 1 and drop point n 2 ; S5, cutting the left and right borders of the image to obtain a cut face image; S6, binarization processing, to obtain a binarized image; S7, obtaining eyeball pixels, taking the middle point position of the eyeball pixels within the same range, Calculate the connection length L of two eyeball pixels; S8, count the value of the above connection length L, and mark the data lower than the value within the set range as abnormal length data, and count the above abnormal data lengths. The invention can effectively reflect the learning enthusiasm of the students.

Description

technical field [0001] The invention relates to a method for evaluating student enthusiasm in a network-based classroom. Background technique [0002] With the advancement of my country's education informatization, online classroom teaching has developed rapidly, but the technical tools used in online classrooms have not been effectively involved. Therefore, the technology that should have brought significant changes to the classroom status has not yet stimulated the huge potential of online classrooms. [0003] Compared with offline classrooms, online classrooms not only allow you to choose your favorite teacher according to your needs, but also the courses can be played repeatedly, and it is also more convenient to use time. [0004] However, online classrooms also have certain disadvantages, such as poor learning quality, which is particularly important in certain stages of education. Contents of the invention [0005] The purpose of the present invention is to propose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06Q50/20G06T7/11
CPCG06T7/11G06Q50/205G06V40/161G06V40/19G06V20/40
Inventor 陈军
Owner NANJING PLASO NETWORK TECH CO LTD