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A classroom attention assessment method and system

An attention and classroom technology, applied in the field of education informatization, can solve problems such as low accuracy of classroom attention assessment

Active Publication Date: 2021-09-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a classroom attention assessment method and system to solve the technical problem of low accuracy in classroom attention assessment in the prior art

Method used

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  • A classroom attention assessment method and system
  • A classroom attention assessment method and system
  • A classroom attention assessment method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A classroom attention assessment method such as figure 1 shown, including the following steps:

[0047] S1. Perform head posture detection frame by frame on the classroom video collected for a class, and obtain the position frame and head posture of the students in each frame image; count the number of student position frames in each frame image respectively, and obtain each frame The number of students in the image, and the mode of the number of students in each frame image is recorded as the total number of students; among them, the head posture includes: positive head-up and non-positive head-up; positive head-up is the head-up posture of the student's head facing the teaching information source ;The head posture detection model can be used to detect the head posture of the collected classroom video frame by frame; commonly used head posture detection models include RetinaFace model, MTCNN model, SSH model, SSD model, R-FCN model , FasterRCNN model, YoLov3 model, et...

Embodiment 2

[0078]A classroom attention evaluation system, comprising: a head posture detection module, which is used to detect the head posture frame by frame of a classroom video of a class collected, and obtain the position frame and the head posture of the student in each frame image; Count the number of student position boxes in each frame image respectively to obtain the number of students in each frame image, and record the mode of the number of students in each frame image as the total number of students; among them, the head posture includes: positive head and non-normal Head-up; head-up is the student’s head facing the teaching information source; the index calculation module is used to calculate the positive head-up rate and activity index of the class based on the head posture of the students in each frame image and the total number of students; among them, the head-up is The head posture is the average value of the ratio of the number of students whose head posture is positive...

Embodiment 3

[0081] A machine-readable storage medium, the machine-readable storage medium stores machine-executable instructions, and when the machine-executable instructions are called and executed by a processor, the machine-executable instructions cause the processor to implement the following: The classroom attention evaluation method described in embodiment 1.

[0082] The relevant technical solutions are the same as those in Embodiment 1, and will not be repeated here.

[0083] To sum up, the present invention proposes a more complete and accurate classroom attention assessment method, and constructs a classroom attention assessment system, which can more accurately describe the classroom attention situation and help teachers to carry out effective teaching reflection.

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Abstract

The invention discloses a method and system for evaluating classroom attention, comprising: S1. Performing head posture detection on a frame-by-frame basis of a collected classroom video of a class, and obtaining the position frame and head posture of students in each frame of images; Obtain the number of students in each frame of images, and record the mode of the number of students in each frame of images as the total number of students; S2. Based on the head posture of the students in each frame of images and the total number of students, calculate the positive head-up rate and activity of the class. Index; among them, the positive head-up rate is the average of the ratio of the number of students whose head posture is a positive head-up to the total number of students; the activity index is the average of the frequency of the students' head posture from non-positive head-up to head-up posture; S3. Calculate The product of the positive head-up rate for the class and the activity index yields the attention estimate for the class. The invention designs an activity index used to describe the active state of the classroom, and the activity index and the head-up rate complement each other to assess the attention in the classroom, so that the assessment result is more accurate.

Description

technical field [0001] The invention belongs to the technical field of education informatization, and more specifically relates to a classroom attention evaluation method and system. Background technique [0002] With the development of information technology, methods and systems using computers to monitor and analyze classroom learning behaviors are also emerging. Among them, the research on classroom attention has a high degree of acceptance in the field of teaching research. Through the analysis and research on classroom attention, the purpose of assisting teachers in effective teaching evaluation and teaching reflection can be achieved. [0003] At present, there are usually two methods for the research of classroom attention. One is to recognize the facial expressions of students, and establish the relationship between different expressions and attention, which is mostly suitable for single-person, close-range online teaching scenarios; the other is to recognize facial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/46G06Q50/20
CPCG06Q50/205G06V40/10G06V10/44
Inventor 许炜田博文郭春麟肖宇
Owner HUAZHONG UNIV OF SCI & TECH
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