Improved Yolov5 and Image Morphology Processing Based on UAV Platform for Dike Health Inspection

Wei Ma, Pei Chang Zhang, Lei Huang, Jun Wei Zhu, Yu Tao Lian, Jie Xiong and Fan Jin
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Wei Ma: School of Electronics and Information Engineering, Shenzhen, China
Pei Chang Zhang: School of Electronics and Information Engineering, Shenzhen, China
Lei Huang: School of Electronics and Information Engineering, Shenzhen, China
Jun Wei Zhu: School of Electronics and Information Engineering, Shenzhen, China
Yu Tao Lian: School of Electronics and Information Engineering, Shenzhen, China
Jie Xiong: School of Electronics and Information Engineering, Shenzhen, China
Fan Jin: School of Electronics and Information Engineering, Shenzhen, China

International Journal of Web Services Research (IJWSR), 2023, vol. 20, issue 1, 1-13

Abstract: Dike health inspection is crucial in river channel regulating. The conventional manual collapse inspection is inefficient and costly so that the unmanned aerial vehicle (UAV)-based inspection has been widely applied. However, the existing vision-based defect detection methods face challenges, such as lack of defect sample data and closed specified data sets. To address them, a defect detection method based on improved YOLOv5 recognition combined with image morphology processing is proposed for dike health inspection with zero defect samples. Specifically, the coordinate attention mechanism is introduced in YOLOv5 model to improve recognition capability for dikes. Also, a rotating bounding box target detection is designed for arbitrary orientation of dikes under UAV view, due to ineffective horizontal bounding box detection. Furthermore, for suspected defect locating efficiency promotion, the specific recognized area of the dike is isolated in the image morphology process. The results show that the proposed method outperforms the traditional Yolov5 algorithm on recall rate, F1, and mAP.

Date: 2023
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