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Detection of wheat seedling lines in the complex environment via deep learning

International Journal of Agricultural and Biological Engineering 2024年第5期17卷 255-265页

作者： Haibo Lin Yuandong Lu rongcheng ding Yufeng Xiu Fazhan Yang Key Lab of Industrial Fluids Energy Conservation and Pollution Control(Ministry of Education) Qingdao 266520ShandongChina School of Mechanical&Automotive Engineering Qingdao University of TechnologyQingdao 266520ShandongChina

Wheat seedling line detection is critical for precision agriculture and automatic guidance in early wheat field operation. Aiming at the complex wheat field environment, a method of detecting wheat seedling lines based on deep learning was proposed in this study. Firstly, a rotated bounding box was created to improve the YOLOv3 model to predict the approximate position of the wheat seedling line;Then, according to the rotated bounding region obtained by the model, the wheat seedling line was detected by fitting the extracted center points. Finally, a comprehensive evaluation method combining angle error and distance error was proposed to evaluate the accuracy of the extracted crop line. By testing images of wheat seedlings in different environments, the results showed that the mean angle error and distance error respectively reached 0.75° and 10.84 pixels while the mean running time was 63.83 ms for a 1920×1080 pixels image. And compared to the original model the improved algorithm model improved the mAP value by 13.2%. The angle error and the distance error of the improved algorithm model were reduced by 51.4% and 39.7%, respectively. The method proposed in this study can accurately detect the wheat seedling lines at different stages and it is also suitable for the environments with weeds, shadow, bright light, and dark light. At the same time, it has a certain adaptability to wheat seedling images with a yaw angle in the shooting process. The research results could provide a reference for the automatic guidance of early wheat field machinery.

关键词： wheat seedling lines automatic guidance deep learning rotated bounding box evaluation method

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A Multi-feature Fusion Apple Classification Method Based on Image Processing and Improved SVM

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Agricultural Biotechnology 2022年第5期11卷 84-91页

作者： Haibo LIN Yuandong LU rongcheng ding Yufeng XIU Key Lab of Industrial Fluid Energy Conservation and Pollution Control Ministry of EducationSchool of Mechanical&Automotive EngineeringQingdao University of TechnologyQingdao 266520China

In order to achieve accurate classification of apple, a multi-feature fusion classification method based on image processing and improved SVM was proposed in this paper. The method was mainly divided into four parts, including image preprocessing, background segmentation, feature extraction and multi-feature fusion classification with improved SVM. Firstly, the homomorphic filtering algorithm was used to improve the quality of apple images. Secondly, the images were converted to HLS space. The background was segmented by the QTSU algorithm. Morphological processing was employed to remove fruit stem and surface defect areas. And apple contours were extracted with the Canny algorithm. Then, apples’ size, shape, color, defect and texture features were extracted. Finally, the cross verification method was used to optimize the penalty factor in SVM. A multi-feature fusion classification model was established. And the weight of each index was calculated by Fisher. In this study, 146 apple samples were selected for training and 61 apple samples were selected for testing. The test results showed that the accuracy of the classification method proposed in this paper was 96.72%, which can provide a reference for apple automatic classification.

关键词： Apple classification Image processing Improved SVM Multi-feature fusion

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Treatment of lumbar spondyiolisthesis with transpedicle instrument fixation system,mono-cage and semi-intertransverse process arthrodesis with bone grafting

Treatment of lumbar spondyiolisthesis with transpedicle inst...

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第八届全国脊柱脊髓损伤学术会议

作者： Mei rongcheng Lian Kai ding Yuanjian Department of Orthopaedic,The central Hospital ofXiangfan,Hubei,441021

＜正＞Objective To observe the outcomes of lumbar spondylolisthesis treated with transpedicle instrument fixation system, mono-cage and semi-intertransverse process arthrodesis with bone *** From June 2002 to June 2005,42 cases of lumbar spondylolisthesis were treated with transpedicle instrument fixation system, mono-cage and semi-intertransverse process arthrodesis with bone ***-up study include clinical outcomes,heights of intervertebral space and foramen,fusion rate and screw broken *** A11 patients were followed from 2 years to 3 years and 5 months with an average of 34 months,The results showed that the pre-operative clinical symptoms disappeared completely in 39 of 42 patients,Pain relief was seen in 92.9%;37 of 42 patients were satisfaction;Solid fusion was obtained in 90.5% of patients;At the last follow up,the average loss of disc-space height was 1.5mm;no screw broken and replacement *** Treatment of lumbar spondylolisthesis with transpedicle instrument fixation system,mono-cage and semi-intertransverse process arthrodesis with bone grafting posses hypo-destruction to posterior column of vertebral,and it also can improve fusion rates and decrease screw broken and replacement loss.

关键词： Lurrlhar vertebrae Spondylolisthesis Treatment outcome Spinal fusion

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基于机器视觉的早期麦苗行识别线提取方法

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农机化研究 2023年第8期45卷 1-9页

作者：卢元栋林海波丁荣诚修玉峰青岛理工大学机械与汽车工程学院山东青岛266000

早期麦苗行识别线的提取对于麦田管理机械自主导航至关重要,为此提出了一种基于机器视觉的麦苗行识别线的提取方法,可适用于麦苗稀疏与缺失情况。此方法由图像分割、仿射变换、垂直投影及麦苗行识别线提取4部分组成。首先,采用颜色指数2... 详细信息

早期麦苗行识别线的提取对于麦田管理机械自主导航至关重要,为此提出了一种基于机器视觉的麦苗行识别线的提取方法,可适用于麦苗稀疏与缺失情况。此方法由图像分割、仿射变换、垂直投影及麦苗行识别线提取4部分组成。首先,采用颜色指数2g-r-b对采集的图像进行灰度化,利用Qtsu方法对灰度图像进行分割;其次,对图像进行仿射变换,改变麦苗行的形态分布;再次,将麦苗对应的像素进行垂直投影得到垂直投影曲线;最后,根据投影曲线计算识别线的下位点与上位点位置,从而提取麦苗行的识别线。测试结果表明:识别线提取的正确率达92.08%,平均角度偏差为1.63°,方法简单、计算量小,每幅图像平均处理时间为0.065s,满足农机作业实时性要求。

关键词：麦苗行识别线提取机器视觉仿射变换垂直投影麦苗缺失

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基于图像处理与改进SVM的苹果多特征融合分级方法

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山东农业科学 2022年第6期54卷 141-149页

作者：林海波卢元栋丁荣诚修玉峰青岛理工大学机械与汽车工程学院山东青岛266520

为实现苹果准确分级,我们提出了基于图像处理与改进SVM(支持向量机)的苹果多特征融合分级方法。该方法主要分为图像预处理、背景分割、特征提取以及改进SVM的多特征融合分级四部分。首先,利用同态滤波算法改善采集的苹果图像质量;其次,... 详细信息

为实现苹果准确分级,我们提出了基于图像处理与改进SVM(支持向量机)的苹果多特征融合分级方法。该方法主要分为图像预处理、背景分割、特征提取以及改进SVM的多特征融合分级四部分。首先,利用同态滤波算法改善采集的苹果图像质量;其次,将图像转换至HLS空间,使用Qtsu算法分割背景,利用形态学处理去除果梗及表面缺陷区域,利用Canny算法提取苹果轮廓;然后,提取苹果的大小、形状、颜色、缺陷、纹理5个特征;最后,利用交叉验证法优化SVM中的惩罚因子,建立多特征融合分级模型,并通过Fisher计算各指标的权重。本试验分别选取146、61个被明确划分等级的苹果样本进行训练、测试,结果表明,该分级方法的准确率达96.72%,可实现高精确度的苹果自动化分级。

关键词：苹果自动化分级图像处理改进SVM 多特征融合

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基于轨迹规划的挖掘机遥控系统研究与开发

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现代制造技术与装备 2022年第1期58卷 1-8页

作者：韩斌高公如丁荣诚林海波山东常林机械集团股份有限公司临沂276700 青岛理工大学机械与汽车工程学院青岛266520

在抢险救灾、矿藏开采及应急施工等领域,为了避免施工危险和恶劣环境的影响,遥控挖掘机的研究与开发具有重要意义。针对遥控挖掘机的动作平顺性问题和工作安全性问题,研究开发了一种基于轨迹规划的挖掘机遥控系统。通过对挖掘机动作的... 详细信息

在抢险救灾、矿藏开采及应急施工等领域,为了避免施工危险和恶劣环境的影响,遥控挖掘机的研究与开发具有重要意义。针对遥控挖掘机的动作平顺性问题和工作安全性问题,研究开发了一种基于轨迹规划的挖掘机遥控系统。通过对挖掘机动作的仿真分析,研究建立挖掘机轨迹规划模型,解决其运动过程中的动作平顺问题;通过对整机通信协议、控制逻辑及界面显示的开发,解决其通信、运行的安全性和可靠性问题。整个系统由遥控器、显示器与控制器3部分组成。试验表明,此系统能够平顺、可靠、安全运行,并为挖掘机的智能控制奠定了良好的基础。

关键词：挖掘机远程遥控轨迹规划动作平顺性安全可靠性

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Promotion of osteochondral repair through immune microenvironment regulation and activation of endogenous chondrogenesis via the release of apoptotic vesicles from donor MSCs

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Bioactive Materials 2024年第11期41卷 455-470页

作者： Guangzhao Tian Han Yin Jinxuan Zheng rongcheng Yu Zhengang ding Zineng Yan Yiqi Tang Jiang Wu Chao Ning Xun Yuan Chenxi Liao Xiang Sui Zhe Zhao Shuyun Liu Weimin Guo Quanyi Guo School of Medicine Nankai UniversityTianjin300071China Institute of Orthopedies Department of OrthopedicsThe Fourth Medical Center of PLA General HospitalNational Clinical Research Center for OrthopedicsSports Medicine&Rehabilitation51 Fucheng RoadHaidian DistrictBeijing100142China Department of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Hospital of Stomatology Guangdong Provincial Key Laboratory of StomatologySun Yat-sen UniversityGuangzhou510055China Department of Orthopaedic Surgery Guangdong Provincial Key Laboratory of Orthopedics and TraumatologyFirst Affiliated Hospital Sun Yat-Sen UniversityGuangzhou510080China

Utilizing transplanted human umbilical cord mesenchymal stem cells(HUMSCs)for cartilage defects yielded advanced tissue regeneration,but the underlying mechanism remain *** after HUMSCs delivery to the defects,we observed substantial *** released apoptotic vesicles(apoVs)of HUMSCs promoted cartilage regeneration by alleviating the chondro-immune *** triggered M2 polarization in macrophages while simultaneously facilitating the chondrogenic differentiation of endogenous ***,in macrophages,miR-100-5p delivered by apoVs activated the MAPK/ERK signaling pathway to promote M2 *** MSCs,let-7i-5p delivered by apoVs promoted chondrogenic differentiation by targeting the eEF2K/p38 MAPK ***,a cell-free cartilage regeneration strategy using apoVs combined with a decellularized cartilage extracellular matrix(DCM)scaffold effectively promoted the regeneration of osteochondral ***,new mechanisms of cartilage regeneration by transplanted MSCs were unconcealed in this ***,we provided a novel experimental basis for cell-free tissue engineering-based cartilage regeneration utilizing *** transplanted human umbilical cord mesenchymal stem cells(HUMSCs)for cartilage defects yielded advanced tissue regeneration,but the underlying mechanism remain *** after HUMSCs delivery to the defects,we observed substantial *** released apoptotic vesicles(apoVs)of HUMSCs promoted cartilage regeneration by alleviating the chondro-immune *** triggered M2 polarization in macrophages while simultaneously facilitating the chondrogenic differentiation of endogenous ***,in macrophages,miR-100-5p delivered by apoVs activated the MAPK/ERK signaling pathway to promote M2 *** MSCs,let-7i-5p delivered by apoVs promoted chondrogenic differentiation by targeting the eEF2K/p38 MAPK ***,a cell-free cartilage regener

关键词： Apoptotic vesicles Cartilage regeneration Human umbilical cord mesenchymal stem cells Macrophage polarization Tissue engineering

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Metallogenic Epoch of Nonferrous Metallic and Silver Deposits in the Jiaodong Peninsula, China and its Geological Significance

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1305-1325页

作者： SONG Mingchun WANG Shanshan YANG Lixin LI Jie LI Shiyong ding Zhengjiang Shandong Provincial Bureau of Geology & Mineral Resources Jinan 250013 Shandong China Shandong Provincial Engineering Research Center for Geological Prospecting Jinan 250013 Shandong China The Sixth Geology & Mineral Resources Survey Institute of Shandong Province Weihai 264209 Shandong China Department of Resource Hebei University of Geosciences Shijiazhuang 050000 Hebei China Geophysical & Geochemical Exploration Institute of Shandong Province Jinan 250013 Shandong China The-Third Geology & Mineral Resources Survey Institute of Shandong Province Yantai 264003 Shandong China

As China＇s most important gold-producing district, the Jiaodong Peninsula also contains copper, lead-zinc, molybdenum （tungsten）, and other nonferrous metal ore deposits, but the space-time and genetic relationships with gold deposits remain uncertain. To investigate the temporal relationship between these nonferrous metal and gold ore deposits, We collected the samples from a number of nonferrous metallic and silver deposits and metallogenetic rock bodies in the eastern Jiaodong Peninsula for isotopic dating. The results show that the Re-Os isotopic model ages of the Lengjia molybdenum deposit in rongcheng range from 114.5 ± 1.8 Ma to 112.6 ± 1.5 Ma, with an average age of 113.6 ± 1.6 Ma; the LA-ICP-MS ^206pb/^238U ages of 33 zircons in the sericitization porphyritic monzogranite that hosts the Tongjiazhuang silver deposit in rongcheng range between 122 Ma and 109 Ma, with a weighted mean age of 116.04 ± 0.95 Ma; the LA-ICP-MS ^206pb/^238U ages of 31 zircons in the copper metallogenic pyroxene monzodiorite that hosts the Kuangbei copper deposit in rongcheng range from 126 Ma to 106 Ma, with a weighted mean age of 116.6 ± 1.7 Ma; and the LA-ICP-MS ^206pb/^238U ages of 19 zircons in the pyroxene monzodiorite surrounding the Dadengge gold and multimetal deposit in Weihai range from 113 Ma to 110 Ma, with a weighted mean age of 111.7 ± 0.6 Ma. All these results indicate that the metallogenic ages of the silver and nonferrous metallic deposits in the Jiaodong Peninsula are in a limited range from 118 Ma to 111 Ma. Previous studies have demonstrated that the isotopic ages of gold deposits in the Jiaodong Peninsula range from 123 Ma to 110 Ma, while Weideshanian magmatism occurred between 126 Ma to 108 Ma. Both these ranges are grossly consistent with the metallogenic ages of silver and nonferrous metallic deposits in this study, suggesting that the large-scale mineralization occurred in the Early Cretaceous when magmatic activities were strong. This epoch may be linked t

关键词： metallogenic epoch nonferrous metal mineral silver deposit thermal uplifting- extensional structure mineralization scenario Jiaodong type gold deposit

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LDL-C/HDL-C及TG/HDL-C比值与冠状动脉病变程度的相关性研究

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安徽医学 2015年第1期36卷 75-77页

作者：丁超文小平李荣成安徽省六安市立医院心血管内科第三病区 237000

目的探讨LDL-C/HDL-C及TG/HDL-C比值与冠心病病变程度之间的相关性。方法分析169例冠脉造影检查确诊的冠心病患者(CHD组)及103例冠脉造影结果阴性者(对照组)LDL-C/HDL-C及TG/HDL-C比值与冠心病及其病变程度的关系。结果冠心病组患者LDL-... 详细信息

目的探讨LDL-C/HDL-C及TG/HDL-C比值与冠心病病变程度之间的相关性。方法分析169例冠脉造影检查确诊的冠心病患者(CHD组)及103例冠脉造影结果阴性者(对照组)LDL-C/HDL-C及TG/HDL-C比值与冠心病及其病变程度的关系。结果冠心病组患者LDL-C/HDL-C比值及TG/HDL-C比值水平及异常率均明显高于对照组,相关分析显示:LDLC/HDL-C及TG/HDL-C比值与冠心病及其病变程度均呈正相关,而前者预测意义更大。结论 LDL-C/HDL-C及TG/HDL-C比值可作为预测CHD的指标,且LDL-C/HDL-C比值水平与CHD相关性更强。

关键词：冠心病低密度脂蛋白胆固醇高密度脂蛋白胆固醇三酰甘油心血管风险

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静脉溶栓联合Solitaire FR型支架取栓术对急性大动脉闭塞性脑梗死患者的疗效分析

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中华老年心脑血管病杂志 2024年第1期26卷 67-70页

作者：王鹏文洪波黄健康邹荣成丁洁汪捷舒永伟丁朋雨南京市溧水区人民医院(东南大学附属中大医院溧水分院)神经内科 211200

目的探究静脉溶栓联合Solitaire FR型支架取栓术对急性大动脉闭塞性脑梗死患者血管再通、神经功能的影响及预后分析。方法回顾性选取2020年10月至2023年3月南京市溧水区人民医院收治的急性大动脉闭塞性脑梗死患者172例,根据治疗方法分... 详细信息

目的探究静脉溶栓联合Solitaire FR型支架取栓术对急性大动脉闭塞性脑梗死患者血管再通、神经功能的影响及预后分析。方法回顾性选取2020年10月至2023年3月南京市溧水区人民医院收治的急性大动脉闭塞性脑梗死患者172例,根据治疗方法分为对照组和研究组,每组86例,对照组采用阿替普酶静脉溶栓治疗,研究组采用阿替普酶静脉溶栓联合Solitaire FR型支架取栓术治疗。比较2组血管再通、神经功能、脑血流灌注和不良事件情况,随访90 d采用改良Rankin量表评价预后。结果2组成功再通率比较,差异无统计学意义(P>0.05),研究组完全再通率高于对照组(68.60%vs 50.00%,P0.05)。随访90 d,研究组良好预后比例高于对照组(80.23%vs 63.95%,P<0.05)。结论静脉溶栓联合Solitaire FR型支架取栓术在急性大动脉闭塞性脑梗死中效果较好,血管再通效果理想,可明显改善患者神经功能和预后。

关键词：脑梗死栓子清除术纤维蛋白溶解药组织型纤溶酶原激活物预后 Solitaire FR型支架

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