基于改进YOLOv8n的矿用提升钢丝绳表面损伤图像识别

Mine hoisting steel wire rope surface damage image recognition based on improved YOLOv8n

  • 摘要: 针对矿用提升钢丝绳表面油污覆盖引发背景干扰、绳股间隙较大导致特征混淆及小目标损伤识别难度大等问题,提出了一种基于改进YOLOv8n的矿用提升钢丝绳表面损伤图像识别方法。在YOLOv8n主干网络中引入多尺度注意力模块(MSAM),通过增强损伤特征与油污背景的空间特征区分能力,提升模型抗干扰能力;将YOLOv8n原有的3个检测头替换为4个轻量化小目标检测头,强化对小目标损伤的识别能力;采用深度可分离卷积(DSConv)替代标准卷积,减少了计算量,提高了识别速度。实验结果表明:改进YOLOv8n模型的平均精度均值(mAP)、识别精度和推理速度分别达92.6%,89.7%和43.5帧/s,相比YOLOv8n模型分别提高了3.1%,4.9%,34.7%;与Faster−RCNN,YOLOv5s,YOLOv8n,YOLOv10m,TWRD−Net,YOLOv5−TPH等主流模型相比,改进YOLOv8n模型对小目标损伤识别精度最高,同时保证了较高的实时性;在煤矿现场油污覆盖、绳股间隙较大的复杂场景中,改进YOLOv8n模型未出现漏检情况,且误检情况较少,平均识别准确率达90%。

     

    Abstract: To address issues such as background interference caused by oil stains covering the surface of mine hoisting steel wire ropes, large gaps between rope strands leading to feature confusion, and the difficulty in identifying small target damages, a surface damage image recognition method for mine hoisting steel wire ropes based on an improved YOLOv8n model was proposed. The Multi-Scale Attention Module (MSAM) was introduced into the YOLOv8n backbone network to enhance the model’s ability to distinguish between damage features and oil stain backgrounds, improving its anti-interference capability. The original three detection heads of YOLOv8n were replaced with four lightweight small-target detection heads to strengthen the recognition ability for small target damages. Depthwise Separable Convolutions (DSConv) were used instead of standard convolutions to reduce computational load and improve recognition speed. Experimental results showed that the improved YOLOv8n model achieved an Mean Average Precision (mAP) of 92.6%, a recognition accuracy of 89.7%, and an inference speed of 43.5 frames per second, representing improvements of 3.1%, 4.9%, and 34.7%, respectively, compared to the original YOLOv8n model. Compared with mainstream models such as Faster-RCNN, YOLOv5s, YOLOv8n, YOLOv10m, TWRD-Net, and YOLOv5-TPH, the improved YOLOv8n model exhibited the best accuracy for small target damage recognition while maintaining high real-time performance. In complex field scenarios with oil stain coverage and large gaps between rope strands in coal mines, the improved YOLOv8n model did not miss any damage detections and had fewer false detections, achieving an average recognition accuracy of 90%.

     

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