Evidence map›Paper›PMID 34450754›Full record

ArticleSensors (Basel, Switzerland)2021

Student Behavior Recognition System for the Classroom Environment Based on Skeleton Pose Estimation and Person Detection.

Feng-Cheng Lin, Huu-Huy Ngo, Chyi-Ren Dow, Ka-Hou Lam, Hung Linh Le

Abstract read
In one paragraph

Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  11. Student Behavior Analysis using YOLOv5 and OpenPose in Smart Classroom Environment.AMIA ... Annual Symposium proceedings. AMIA Symposium · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Feng-Cheng LinDepartment of Information Engineering and Computer Science, Feng Chia University, Taichung 40724, Taiwan.ORCID 0000-0003-0457-3757
Huu-Huy NgoFaculty of Information Technology, Thai Nguyen University of Information and Communication Technology, Thai Nguyen 250000, Vietnam.ORCID 0000-0001-8276-0270
Chyi-Ren DowDepartment of Information Engineering and Computer Science, Feng Chia University, Taichung 40724, Taiwan.ORCID 0000-0002-0978-9576
Ka-Hou LamGEO Informatics Inc., Taichung 407, Taiwan.
Hung Linh LeFaculty of Automation Technology, Thai Nguyen University of Information and Communication Technology, Thai Nguyen 250000, Vietnam.

Funding

Ministry of Science and Technology, Taiwan 110-2121-M-035 -001 -
6 · The paper itself

Abstract

Human action recognition has attracted considerable research attention in the field of computer vision, especially for classroom environments. However, most relevant studies have focused on one specific behavior of students. Therefore, this paper proposes a student behavior recognition system based on skeleton pose estimation and person detection. First, consecutive frames captured with a classroom camera were used as the input images of the proposed system. Then, skeleton data were collected using the OpenPose framework. An error correction scheme was proposed based on the pose estimation and person detection techniques to decrease incorrect connections in the skeleton data. The preprocessed skeleton data were subsequently used to eliminate several joints that had a weak effect on behavior classification. Second, feature extraction was performed to generate feature vectors that represent human postures. The adopted features included normalized joint locations, joint distances, and bone angles. Finally, behavior classification was conducted to recognize student behaviors. A deep neural network was constructed to classify actions, and the proposed system was able to identify the number of students in a classroom. Moreover, a system prototype was implemented to verify the feasibility of the proposed system. The experimental results indicated that the proposed scheme outperformed the skeleton-based scheme in complex situations. The proposed system had a 15.15% higher average precision and 12.15% higher average recall than the skeleton-based scheme did.

Indexed as

Neural Networks, ComputerSkeletonHuman ActivitiesHumansRecognition, PsychologyStudentsaction recognitiondeep learningobject detectionskeleton posestudent behavior

Identifiers

PMID34450754
PMCPMC8401214

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.