Article(id=1261267654854193768, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1261262687258985194, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2406421, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1724688000000, receivedDateStr=2024-08-27, revisedDate=1745337600000, revisedDateStr=2025-04-23, acceptedDate=null, acceptedDateStr=null, onlineDate=1778639242137, onlineDateStr=2026-05-13, pubDate=1752768000000, pubDateStr=2025-07-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1778639242137, onlineIssueDateStr=2026-05-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1778639242137, creator=13701087609, updateTime=1778639242137, updator=13701087609, issue=Issue{id=1261262687258985194, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='20', pageStart='8317', pageEnd='8759', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1778638057769, creator=13701087609, updateTime=1778753106634, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1261745237240722095, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1261262687258985194, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1261745237240722096, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1261262687258985194, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=8595, endPage=8603, ext={EN=ArticleExt(id=1261267655760163439, articleId=1261267654854193768, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Detection of Low-quality Image Safety Helmet in Coal Mine Based on Improved YOLOv7, columnId=1156262729162810294, journalTitle=Science Technology and Engineering, columnName=Papers·Automation and Computational Technology, runingTitle=null, highlight=null, articleAbstract=
Due to the complex underground environment, low lighting conditions, and the small size of hard hats, the detection results are not ideal. To address low-quality images in complex environments, an improved YOLOv7 for hard hat detection in low-quality images from underground coal mines was proposed. Firstly, addressing the limitation that image features were susceptible to noise interference under low-light conditions, a multi-scale MELAN module was introduced. By constructing a multi-scale attention mechanism, broader contextual information was captured, thereby enhancing feature extraction and effectively suppressing noise interference. Secondly, the OD-SMP module was constructed using soft pooling and full-dimensional dynamic convolution in the backbone network, which reduced information diffusion in feature mappings, retained more contextual information, and enhanced the detection capability for small targets. Finally, to address the varying quality of detection samples caused by the complex backgrounds and environments with different lighting and distances in underground coal mines, Wise-IoU was used as the loss function. Experimental results show that the average precision of the improved model is 94.9%, which is 13.5% higher than the original YOLOv7 model, demonstrating better detection performance.
, correspAuthors=Yan-jun ZHANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Cheng-yang KANG, Yan-jun ZHANG, Rui ZHANG), CN=ArticleExt(id=1261267661212758694, articleId=1261267654854193768, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于改进YOLOv7的煤矿井下低质影像安全帽检测, columnId=1156262729783567290, journalTitle=科学技术与工程, columnName=论文·自动化技术、计算机技术, runingTitle=null, highlight=null, articleAbstract=
由于井下环境复杂,低光照以及安全帽的物体较小导致的检测效果不理想。针对复杂环境下的低质影像,提出一种改进YOLOv7的煤矿井下低质影像安全帽检测。首先,针对低光照条件下的图像特征易受噪声干扰的局限性,提出多尺度MELAN模块,通过构建多尺度注意力机制来捕捉更广泛的上下文信息,进而强化特征信息的提取,并有效抑制噪声的干扰;其次,在主干网络使用软池化和全维动态卷积构建OD-SMP模块,减少了特征映射中的信息弥散,保留了更多上下文信息,增强对小目标的检测能力;最后,对于煤矿井下不同光照和距离的复杂背景和环境,导致检测样本质量出现参差不齐的情况,使用Wise-IoU作为损失函数。实验结果表明:改进模型的平均精度为94.9%,比原来的YOLOv7模型高出13.5%,具有更好的检测效果。
, correspAuthors=张延军, authorNote=null, correspAuthorsNote=
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1 School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China), AuthorCompanyExt(id=1261267662005482162, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, companyId=1261267661909013167, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 太原科技大学机械工程学院, 太原 030024)]), AuthorCompany(id=1261267662261334709, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, xref=2, ext=[AuthorCompanyExt(id=1261267662269723319, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, companyId=1261267662261334709, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 School of Computer Science and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China), AuthorCompanyExt(id=1261267662278111928, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, companyId=1261267662261334709, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 太原科技大学计算机科学与技术学院, 太原 030024)])], figs=[ArticleFig(id=1261267674378679054, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.1, caption=
YOLOv7 network structure, figureFileSmall=aMNm3B5mQzraA3e8Y+f8Kg==, figureFileBig=GtaDrscAKBmG17Vx/zqMCw==, tableContent=null), ArticleFig(id=1261267675058156305, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图1, caption=
YOLOv7网络结构 Input为输入;Backbone为主干;Head为头部;CBS为卷积-批归一化Silu模块;cat为拼接操作;UPSample为上采样量模块;ELAN为高级层级集合网络;MP为最大池化双路径模块;SPPCSPC为空间金字塔池化-跨阶段部分连接;ELAN-H为头部增强型ELAN;CBM为卷积-批归一化Mish模块
, figureFileSmall=aMNm3B5mQzraA3e8Y+f8Kg==, figureFileBig=GtaDrscAKBmG17Vx/zqMCw==, tableContent=null), ArticleFig(id=1261267676723295002, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.2, caption=
MELAN module for aggregating peripheral information, figureFileSmall=wQQgKoV4iPmE/jDsNR5H/w==, figureFileBig=vX+2sKtfzn/8/Iwo/0dafQ==, tableContent=null), ArticleFig(id=1261267676903650076, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图2, caption=
聚合周边信息的MELAN模块 CBS为卷积操作;cat为拼接操作;MEMA为注意力机制
, figureFileSmall=wQQgKoV4iPmE/jDsNR5H/w==, figureFileBig=vX+2sKtfzn/8/Iwo/0dafQ==, tableContent=null), ArticleFig(id=1261267677176279841, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.3, caption=
EMA module structure, figureFileSmall=q0uwOiYXer8wr+VfCCnAdg==, figureFileBig=YmxLr0A7Oq7xp3L+WX9GNw==, tableContent=null), ArticleFig(id=1261267677436326691, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图3, caption=
EMA模块结构 Ave Pool为平均池化;Softmax为归一化指数函数;Conv为卷积;Concat为拼接操作;Sigmoid为激活函数;Re-weight为分配权重;Matmul为矩阵相乘函数;Input为输入;Output为输出;Groups为分组;GroupNorm为组归一化;Cross-spatiallearning为跨空间学习
, figureFileSmall=q0uwOiYXer8wr+VfCCnAdg==, figureFileBig=YmxLr0A7Oq7xp3L+WX9GNw==, tableContent=null), ArticleFig(id=1261267677599904550, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.4, caption=
MEMA module structure, figureFileSmall=Hcs35m0UuKMjJPZqWW7d9g==, figureFileBig=IDyBvujE6HysmPd8KyFVuw==, tableContent=null), ArticleFig(id=1261267677801231145, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图4, caption=
MEMA模块结构 Ave Pool为平均池化;Max Pool为平均池化;Softmax为归一化指数函数;Conv为卷积;Concat为拼接操作;Sigmoid为激活函数;Re-weight为分配权重;Matmul为矩阵相乘函数;Input为输入;Output为输出;Groups为分组;GroupNorm为组归一化;Cross-spatial learning为跨空间学习
, figureFileSmall=Hcs35m0UuKMjJPZqWW7d9g==, figureFileBig=IDyBvujE6HysmPd8KyFVuw==, tableContent=null), ArticleFig(id=1261267677977391915, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.5, caption=
OD-SMP module structure, figureFileSmall=YY7D1y5JawHaU5rDCDZmKw==, figureFileBig=Q9M4o7VGwIQWUSzLQ69SvA==, tableContent=null), ArticleFig(id=1261267678107415342, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图5, caption=
OD-SMP模块结构图 红色模块为改进部分;SoftPool为软池化;ODConv为全维动态卷积;cat为拼接操作
, figureFileSmall=YY7D1y5JawHaU5rDCDZmKw==, figureFileBig=Q9M4o7VGwIQWUSzLQ69SvA==, tableContent=null), ArticleFig(id=1261267678338102065, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.6, caption=
Full dimensional dynamic convolution calculation flowchart, figureFileSmall=qcadv9UZmjRLHRrFmbYKnQ==, figureFileBig=49I0ciI9YYxk5sySq1vOog==, tableContent=null), ArticleFig(id=1261267678531040054, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图6, caption=
全维动态卷积计算流程图, figureFileSmall=qcadv9UZmjRLHRrFmbYKnQ==, figureFileBig=49I0ciI9YYxk5sySq1vOog==, tableContent=null), ArticleFig(id=1261267678837224248, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.7, caption=
Detection effect diagram, figureFileSmall=Ss+r+SZ53WehmcMXOQwqxQ==, figureFileBig=eDRvo9jEH0hbDA6oNl8Pmw==, tableContent=null), ArticleFig(id=1261267679256654651, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图7, caption=
检测效果图, figureFileSmall=Ss+r+SZ53WehmcMXOQwqxQ==, figureFileBig=eDRvo9jEH0hbDA6oNl8Pmw==, tableContent=null), ArticleFig(id=1261267679449592637, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Fig.8, caption=
mAP curves before and after improvement, figureFileSmall=YCRul3ke77jaSRpg46exEA==, figureFileBig=3zqg0aWDt67CXW0t9goonA==, tableContent=null), ArticleFig(id=1261267679659307838, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=图8, caption=
改进前后mAP曲线, figureFileSmall=YCRul3ke77jaSRpg46exEA==, figureFileBig=3zqg0aWDt67CXW0t9goonA==, tableContent=null), ArticleFig(id=1261267679764165441, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Table 1, caption=
Experimental environment
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| 配置名称 | 版本参数 |
| 操作系统 | Ubuntu 18.04 |
| GPU | NVIDIA GeForce RTX 3060 |
| CPU | Intel Core i9-12900H |
| RAM/G | 16 |
| 深度学习框架 | PyTorch |
| CUDA版本 | 11.6 |
| Python版本 | 3.8 |
), ArticleFig(id=1261267679877411652, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=表1, caption=
实验环境
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| 配置名称 | 版本参数 |
| 操作系统 | Ubuntu 18.04 |
| GPU | NVIDIA GeForce RTX 3060 |
| CPU | Intel Core i9-12900H |
| RAM/G | 16 |
| 深度学习框架 | PyTorch |
| CUDA版本 | 11.6 |
| Python版本 | 3.8 |
), ArticleFig(id=1261267680103904071, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Table 2, caption=
Results of ablation experiment
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| YOLOv7 | MELAN | OD-SMP | Wise-IoU | mAP/ % | mAP@0.5/ % | GFLOPs |
| √ | — | — | — | 81.4 | 82.6 | 26.7 |
| √ | √ | — | — | 83.9 | 82.9 | 30.0 |
| √ | — | √ | — | 83.1 | 83.2 | 23.8 |
| √ | — | — | √ | 86.3 | 85.2 | 26.7 |
| √ | √ | — | √ | 89.5 | 88.3 | 30.0 |
| √ | — | √ | √ | 90.9 | 87.6 | 23.8 |
| √ | √ | √ | — | 91.2 | 90.1 | 27.2 |
| √ | √ | √ | √ | 94.9 | 93.5 | 27.2 |
), ArticleFig(id=1261267680208761674, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=表2, caption=
消融实验结果
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| YOLOv7 | MELAN | OD-SMP | Wise-IoU | mAP/ % | mAP@0.5/ % | GFLOPs |
| √ | — | — | — | 81.4 | 82.6 | 26.7 |
| √ | √ | — | — | 83.9 | 82.9 | 30.0 |
| √ | — | √ | — | 83.1 | 83.2 | 23.8 |
| √ | — | — | √ | 86.3 | 85.2 | 26.7 |
| √ | √ | — | √ | 89.5 | 88.3 | 30.0 |
| √ | — | √ | √ | 90.9 | 87.6 | 23.8 |
| √ | √ | √ | — | 91.2 | 90.1 | 27.2 |
| √ | √ | √ | √ | 94.9 | 93.5 | 27.2 |
), ArticleFig(id=1261267680296842060, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=EN, label=Table 3, caption=
Comparison results of different algorithms
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| 不同算法 | mAP/% | mAP@0.5/% | GFLOPs |
| SSD | 58.4 | 49.2 | 343.37 |
| Fast-RCNN | 66.5 | 51.9 | 193.78 |
| YOLOv5 | 75.0 | 38.0 | 15.80 |
| YOLOv7 | 81.4 | 82.6 | 26.70 |
| YOLOv7-A | 93.5 | 91.7 | 28.30 |
| YOLOv8 | 88.8 | 86.8 | 8.20 |
| 本文算法 | 94.9 | 93.5 | 27.20 |
), ArticleFig(id=1261267680460419918, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1261267654854193768, language=CN, label=表3, caption=
不同算法对比效果结果
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| 不同算法 | mAP/% | mAP@0.5/% | GFLOPs |
| SSD | 58.4 | 49.2 | 343.37 |
| Fast-RCNN | 66.5 | 51.9 | 193.78 |
| YOLOv5 | 75.0 | 38.0 | 15.80 |
| YOLOv7 | 81.4 | 82.6 | 26.70 |
| YOLOv7-A | 93.5 | 91.7 | 28.30 |
| YOLOv8 | 88.8 | 86.8 | 8.20 |
| 本文算法 | 94.9 | 93.5 | 27.20 |
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