PMID- 36015693 OWN - NLM STAT- MEDLINE DCOM- 20220829 LR - 20220829 IS - 1424-8220 (Electronic) IS - 1424-8220 (Linking) VI - 22 IP - 16 DP - 2022 Aug 9 TI - Bimodal Learning Engagement Recognition from Videos in the Classroom. LID - 10.3390/s22165932 [doi] LID - 5932 AB - Engagement plays an essential role in the learning process. Recognition of learning engagement in the classroom helps us understand the student's learning state and optimize the teaching and study processes. Traditional recognition methods such as self-report and teacher observation are time-consuming and obtrusive to satisfy the needs of large-scale classrooms. With the development of big data analysis and artificial intelligence, applying intelligent methods such as deep learning to recognize learning engagement has become the research hotspot in education. In this paper, based on non-invasive classroom videos, first, a multi-cues classroom learning engagement database was constructed. Then, we introduced the power IoU loss function to You Only Look Once version 5 (YOLOv5) to detect the students and obtained a precision of 95.4%. Finally, we designed a bimodal learning engagement recognition method based on ResNet50 and CoAtNet. Our proposed bimodal learning engagement method obtained an accuracy of 93.94% using the KNN classifier. The experimental results confirmed that the proposed method outperforms most state-of-the-art techniques. FAU - Hu, Meijia AU - Hu M AD - Hubei Research Center for Educational Informationization, Faculty of Artificial Intelligence in Education, Central China Normal University, Wuhan 430074, China. AD - Huanggang High School of Hubei Province, Huanggang 438000, China. FAU - Wei, Yantao AU - Wei Y AD - Hubei Research Center for Educational Informationization, Faculty of Artificial Intelligence in Education, Central China Normal University, Wuhan 430074, China. FAU - Li, Mengsiying AU - Li M AD - School of Management, Wuhan College, Wuhan 430212, China. FAU - Yao, Huang AU - Yao H AUID- ORCID: 0000-0001-5055-4106 AD - Hubei Research Center for Educational Informationization, Faculty of Artificial Intelligence in Education, Central China Normal University, Wuhan 430074, China. FAU - Deng, Wei AU - Deng W AD - Hubei Research Center for Educational Informationization, Faculty of Artificial Intelligence in Education, Central China Normal University, Wuhan 430074, China. FAU - Tong, Mingwen AU - Tong M AD - Hubei Research Center for Educational Informationization, Faculty of Artificial Intelligence in Education, Central China Normal University, Wuhan 430074, China. FAU - Liu, Qingtang AU - Liu Q AD - Hubei Research Center for Educational Informationization, Faculty of Artificial Intelligence in Education, Central China Normal University, Wuhan 430074, China. LA - eng GR - CCNUTEIII-2021-19/National Collaborative Innovation Experimental Base Construction Project for Teacher Develop-ment of Central China Normal University/ PT - Journal Article DEP - 20220809 PL - Switzerland TA - Sensors (Basel) JT - Sensors (Basel, Switzerland) JID - 101204366 SB - IM MH - *Artificial Intelligence MH - Humans MH - *Problem-Based Learning/methods MH - Students PMC - PMC9415674 OTO - NOTNLM OT - bimodal OT - classroom videos OT - deep learning OT - learning engagement COIS- The authors declare no conflict of interest. EDAT- 2022/08/27 06:00 MHDA- 2022/08/30 06:00 PMCR- 2022/08/09 CRDT- 2022/08/26 01:44 PHST- 2022/06/02 00:00 [received] PHST- 2022/07/27 00:00 [revised] PHST- 2022/07/27 00:00 [accepted] PHST- 2022/08/26 01:44 [entrez] PHST- 2022/08/27 06:00 [pubmed] PHST- 2022/08/30 06:00 [medline] PHST- 2022/08/09 00:00 [pmc-release] AID - s22165932 [pii] AID - sensors-22-05932 [pii] AID - 10.3390/s22165932 [doi] PST - epublish SO - Sensors (Basel). 2022 Aug 9;22(16):5932. doi: 10.3390/s22165932.