基于加权双向特征融合的矿区道路落石检测

doi:10.11872/j.issn.1005-2518.2023.06.120

黄金科学技术 ›› 2023, Vol. 31 ›› Issue (6): 953-963.doi: 10.11872/j.issn.1005-2518.2023.06.120

基于加权双向特征融合的矿区道路落石检测

顾清华^1,²(),杜艺凡¹(),李萍丰³,王丹²

^1.西安建筑科技大学资源工程学院，陕西西安 710055
^2.西安市智慧工业感知计算与决策重点实验室，陕西西安 710055
^3.宏大爆破工程集团有限责任公司，广东广州 511300

收稿日期:2023-08-22 修回日期:2023-11-28 出版日期:2023-12-31 发布日期:2024-01-26
通讯作者: 杜艺凡 E-mail:qinghuagu@126.com;3389869409@qq.com
作者简介:顾清华（1981-），男，山东潍坊人，教授，从事矿山智能科学与工程研究工作。qinghuagu@126.com
基金资助:
国家自然科学基金项目“金属露天矿无人驾驶多工序多目标协同智能调度方法研究”(52074205);陕西省杰出青年基金项目“时空路况下金属露天矿无人驾驶多车协同智能调度集成建模”(2020JC-44)

Road Rockfall Detection in Mining Area Based on Weighted Bidirectional Feature Fusion

Qinghua GU^1,²(),Yifan DU¹(),Pingfeng LI³,Dan WANG²

^1.School of Resources Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi, China
^2.Xi’an Key Laboratory of Intelligent Industry Perception Computing and Decision Making, Xi’an 710055, Shaanxi, China
^3.Hongda Blasting Engineering Group Ltd. , Co. , Guangzhou 511300, Guangdong, China

Received:2023-08-22 Revised:2023-11-28 Online:2023-12-31 Published:2024-01-26
Contact: Yifan DU E-mail:qinghuagu@126.com;3389869409@qq.com

摘要/Abstract

摘要：

为了解决当前露天矿区非结构化路面落石检测存在的环境复杂、落石尺寸差异较大以及落石与非结构化路面颜色相近而造成难以精准识别的问题，提出了一种基于加权双向特征融合的矿区道路落石检测模型。首先，通过加入SimAM 注意力机制有效抑制背景环境的干扰；其次，使用加权双向特征金字塔（BiFPN）结构实现多尺度特征融合，增强模型对于不同尺寸落石的特征提取能力；最后，引入轻量级卷积GSConv模块，通过减少模型计算量来提升模型检测速度。试验结果表明，该算法的检测精度均值达到92.8%，检测速度达到63.1FPS，能够实现矿区非结构化路面落石的实时高精度检测，为无人矿卡的安全行驶提供了保障。

关键词: 矿区道路, 无人驾驶, 机器视觉, 落石检测, 多尺度特征融合, YOLOv5模型

Abstract:

With the booming development of big data and Internet of Things technology，traditional mines have developed to smart mines and intelligent mines，and unmanned technology has been gradually applied to mining areas.In order to solve the problem that the rockfall detection of unstructured road in open-pit mine area has complex environment，large difference in rockfall size and similar color between rockfall and unstructured road surface，a rockfall detection model of mining road based on weighted bidirectional feature fusion was proposed.First，the SimAM attention mechanism is added to the backbone network，this attention mechanism is different from the previous channel attention mechanism and spatial attention mechanism，it can effectively eliminate the interference of the background environment without adding additional parameters，so that the model can focus more on the target characteristics of rockfall.Second，the weighted bidirectional feature pyramid（BiFPN）structure was used to realize multi-scale feature fusion in the neck.Since the PANet structure in the YOLOv5s network model only adds or splice the characteristics of the pyramid structure in the melting process，the bidirectional feature weighting was combined with the bidirectional feature of the weight and adaptive adjustment to ensure that the network model attaches proper importance to the rock ebaissees different sizes and different levels and realizes the addition between the low-level position information and high-level semantic information for multiple cross-layer weighted feature fusion，thus enhancing the feature extracion ability of the model for rockfall of different sizes.Finally，the lightweight convolution GSConv module was introduced into the col，which can be used to process function cards at this time，not only reducing redundant information，but also avoiding compression.The GSConv lightweight convolution module is based on deep separable convolution（DSC），ordinary convolution（SC） and channel shuffle operation，which improves the detection speed of the model by effectively reducing the complexity of the model.The experimental results show that the average detection accuracy of this algorithm reaches 92.8%.and the detection speed reaches 63.1FPS.Compared with the current fastest R-CNN，YOLOv4-tiny，YOLOv7 and YOLOv5s algorithms，the average detection accuracy is increased by 17.0，13.6，3.4 and 2.5 percentiles，and the detection speed is increased by 32.2，1.4，14.6 and 2.6 FPS，respectively.Moreover，the model size of the algorithm is only 12.9 MB，which is easy to deploy on mobile devices.Therefore，the algorithm can realize the real-time and accurate detection of unstructured road rockfall in mining area，and ensure the safe driving of unmanned mining card.

Key words: mining area road, unmanned driving, machine vision, rockfall detection, multi-scale feature fusion, YOLOv5 model

中图分类号:

TP391.4

顾清华, 杜艺凡, 李萍丰, 王丹. 基于加权双向特征融合的矿区道路落石检测[J]. 黄金科学技术, 2023, 31(6): 953-963.

Qinghua GU, Yifan DU, Pingfeng LI, Dan WANG. Road Rockfall Detection in Mining Area Based on Weighted Bidirectional Feature Fusion[J]. Gold Science and Technology, 2023, 31(6): 953-963.

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参数名称	参数设置	参数名称	参数设置
图像输入大小	640×640×3	初试学习率	0.01
训练批次	8	NMS阈值	0.45
迭代次数	200	优化器	SGD

	实际正确	实际错误
预测正确	真阳性TP	假阳性FP
预测错误	假阴性FN	真阴性TN

模型	深度因子	宽度因子	mAP@0.5/%	检测速度 /FPS	模型大小/M
YOLOv5s	0.33	0.5	90.3	60.5	13.7
YOLOv5m	0.65	0.75	90.9	48.5	41.9
YOLOv5l	1	1	91.5	39.5	91.6
YOLOv5x	1.33	1.25	91.9	37.2	170.2

嵌入方式	P/%	R/%	mAP@0.5/%	检测速度/FPS
方式一	91.2	87.1	91.6	60.8
方式二	90.4	87.9	91.1	61.2

模型	BiFPN	SimAM	GSConv	P/%	R/%	mAP@0.5/%	检测速度 /FPS
0				89.9	85.9	90.3	60.5
1	√			91.5	88.4	91.8	58.8
2		√		91.2	87.1	91.6	60.8
3			√	90.5	86.4	90.8	63.9
4	√	√		92.3	89.1	92.5	59.2
5	√		√	92.1	88.3	92.2	62.1
6		√	√	91.6	88.4	91.9	63.3
7	√	√	√	92.5	89.8	92.8	63.1

基于加权双向特征融合的矿区道路落石检测

Road Rockfall Detection in Mining Area Based on Weighted Bidirectional Feature Fusion

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检测方法	P/%	R/%	mAP@0.5/%	检测速度 /FPS	模型大小 /M
Faster R-CNN	72.8	67.2	75.8	30.9	108.9
YOLOv4-tiny	77.8	75.1	79.2	61.7	23.1
YOLOv5s	89.9	85.9	90.3	60.5	13.7
YOLOv7	88.3	86.7	89.4	48.5	71.3
本文算法	92.5	89.8	92.8	63.1	12.9

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