Chen Haiwei, Zhou Guohui, Jiang Huixin
School of Computer Science and Information Engineering, Harbin Normal University, Harbin 150025, China.
School of Life Sciences and Technology, Harbin Normal University, Harbin 150025, China.
Sensors (Basel). 2023 Oct 11;23(20):8385. doi: 10.3390/s23208385.
Accurately detecting student classroom behaviors in classroom videos is beneficial for analyzing students' classroom performance and consequently enhancing teaching effectiveness. To address challenges such as object density, occlusion, and multi-scale scenarios in classroom video images, this paper introduces an improved YOLOv8 classroom detection model. Firstly, by combining modules from the Res2Net and YOLOv8 network models, a novel C2f_Res2block module is proposed. This module, along with MHSA and EMA, is integrated into the YOLOv8 model. Experimental results on a classroom detection dataset demonstrate that the improved model in this paper exhibits better detection performance compared to the original YOLOv8, with an average precision (mAP@0.5) increase of 4.2%.
准确检测课堂视频中的学生课堂行为,有利于分析学生的课堂表现,进而提高教学效果。为应对课堂视频图像中物体密度、遮挡和多尺度场景等挑战,本文引入了一种改进的YOLOv8课堂检测模型。首先,通过结合Res2Net和YOLOv8网络模型的模块,提出了一种新颖的C2f_Res2block模块。该模块与MHSA和EMA一起被集成到YOLOv8模型中。在课堂检测数据集上的实验结果表明,本文提出的改进模型相比原始YOLOv8展现出了更好的检测性能,平均精度(mAP@0.5)提高了4.2%。