YOLO-Fall: A Novel Convolutional Neural Network Model for Fall Detection in Open Spaces

Abstract

Currently, incidents of personal accidents occur frequently in industrial fields, and falling is one of the most common safety hazards. This makes fall detection a research area of significant importance. Timely responses to fall events can significantly reduce the harm caused. However, most of the available fall detection models often suffer from issues such as insufficient detection accuracy or high parameter and computational requirements, making them challenging to deploy on local devices. In response, this paper introduces an enhanced convolutional neural network model, YOLOv7-fall, aimed at promptly detecting fall incidents. Firstly, the paper proposes a novel attention module, SDI, based on the Coordinate Attention and Shuffle Attention. This module enhances the feature extraction capabilities for detecting targets. Secondly, the inclusion of GSConv and VoV-GSCSP modules in the model's head section is in order to reduce model parameters and computational complexity, making it more suitable for deployment. Thirdly, by replacing the conventional 3x3 convolution in the final ELAN(Efficient Layer Aggregation Networks) module of the Backbone with the DBB (Diverse Branch Block), the model captures features from different layers or types in the image, increasing the network's diversity. Experimental results demonstrate that YOLO-fall improves mAP by 2.7% compared to YOLOv7-tiny while reducing model parameters by 3.5% and computational requirements by 5.4%. In comparison to existing detection algorithms under similar conditions, YOLO-fall achieves more precise and lightweight capabilities.

Elderly Fall Detection Algorithm Based on Improved YOLOv5s

“…Compared with the original Res-Net unit, the single convolution scale is increased to four convolution scales, and the features under each different perception field are fused to obtain rich hierarchical information from the image. Zhao et al [27] proposed a novel attention module SDI based on coordinate attention and aliasing attention. The module enhances the feature extraction ability of detection targets.…”