YOLOv5s-GTB: light-weighted and improved YOLOv5s for bridge crack detection

• URL: http://arxiv.org/abs/2206.01498v1
• Date: Fri, 3 Jun 2022 10:52:59 GMT
• Title: YOLOv5s-GTB: light-weighted and improved YOLOv5s for bridge crack detection
• Authors: Xiao Ruiqiang
• Abstract summary: This study proposes a light-weighted, high-precision, deep learning-based bridge apparent crack recognition model that can be deployed in mobile devices' scenarios. YOLOv5 is identified as the basic framework for the light-weighted crack detection model through experiments for comparison and validation. The improved model has 42% fewer parameters and faster inference response, but also significantly outperforms the original model in terms of accuracy and mAP.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In response to the situation that the conventional bridge crack manual detection method has a large amount of human and material resources wasted, this study is aimed to propose a light-weighted, high-precision, deep learning-based bridge apparent crack recognition model that can be deployed in mobile devices' scenarios. In order to enhance the performance of YOLOv5, firstly, the data augmentation methods are supplemented, and then the YOLOv5 series algorithm is trained to select a suitable basic framework. The YOLOv5s is identified as the basic framework for the light-weighted crack detection model through experiments for comparison and validation.By replacing the traditional DarkNet backbone network of YOLOv5s with GhostNet backbone network, introducing Transformer multi-headed self-attention mechanism and bi-directional feature pyramid network (BiFPN) to replace the commonly used feature pyramid network, the improved model not only has 42% fewer parameters and faster inference response, but also significantly outperforms the original model in terms of accuracy and mAP (8.5% and 1.1% improvement, respectively). Luckily each improved part has a positive impact on the result. This paper provides a feasible idea to establish a digital operation management system in the field of highway and bridge in the future and to implement the whole life cycle structure health monitoring of civil infrastructure in China.

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