JACIII Vol.24 No.7 pp. 891-899
doi: 10.20965/jaciii.2020.p0891


A Students’ Concentration Evaluation Algorithm Based on Facial Attitude Recognition via Classroom Surveillance Video

Simin Li, Yaping Dai, Kaoru Hirota, and Zhe Zuo

School of Automation, Beijing Institute of Technology
No. 5 Zhongguancun South Street, Haidian District, Beijing 100081, China

Corresponding author

October 20, 2020
October 27, 2020
December 20, 2020
concentration evaluation, facial attitude recognition, Dempster–Shafer theory, classroom surveillance video

To detect the students’ concentration state in classroom, a DS (Dempster–Shafer theory)-based evaluation algorithm is proposed by measuring the students’ Euler angles of their facial attitude. The detection of facial attitude angles can be implemented under the surveillance video with lower pixels. Therefore, compared with other methods for students’ concentration evaluation, the proposed algorithm can be applied directly in most classrooms by the support of existing monitoring equipment. By using DS theory to fuse the concentration state of each student, the curve of students’ overall concentration score changing with time can be obtained to describe the overall classroom concentration state. The design of the algorithm is proved to be feasible and effective under the dataset provided by computer front camera. The realization of the overall function effect of the algorithm is tested under the 35-person classroom video dataset. Compared with the average score from the questionnaire given by 20 reviewers, the accuracy of the proposed algorithm is about 85.3%.


Algorithm"s screen result in class video

Cite this article as:
S. Li, Y. Dai, K. Hirota, and Z. Zuo, “A Students’ Concentration Evaluation Algorithm Based on Facial Attitude Recognition via Classroom Surveillance Video,” J. Adv. Comput. Intell. Intell. Inform., Vol.24 No.7, pp. 891-899, 2020.
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