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基于实例分割的玉米虫害检测研究 被引量:1
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作者 赵康迪 单玉刚 +1 位作者 袁杰 赵元龙 《河南农业科学》 北大核心 2022年第12期153-161,共9页
为实现玉米虫害精准、快速识别,提出基于实例分割的卷积神经网络结合迁移学习的虫害检测方法。以草地贪夜蛾的卵、幼虫、成虫为检测对象,使用数据增强对图像数据进行扩充,将Yolact++模型在COCO数据集上的预训练权重迁移至草地贪夜蛾的... 为实现玉米虫害精准、快速识别,提出基于实例分割的卷积神经网络结合迁移学习的虫害检测方法。以草地贪夜蛾的卵、幼虫、成虫为检测对象,使用数据增强对图像数据进行扩充,将Yolact++模型在COCO数据集上的预训练权重迁移至草地贪夜蛾的检测。使用focal loss中解决难易样本不均衡的思想,优化模型中的损失函数。以Detnet模型改进Yolact++模型中Resnet主干模型部分,提高对小目标检测的效果。训练过程中使用卷积层先冻结再解冻、局部与全局相结合的训练方法,获得最优权重模型,并对模型进行测试。结果表明:该方法与YoloV3+迁移学习、SSD+迁移学习、Yolact+迁移学习、Yolact++等检测算法相比,对复杂背景图像检测有更好的准确率与漏检率,测试的准确率达到96.32%,漏检率为5.51%,误检率为5.33%。 展开更多
关键词 玉米虫害 草地贪夜蛾 实例分割 迁移学习 Yolact++ Detnet
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Landscape Improvement Design of Mountainous Scenic Roads Under the Background of“All-for-one tourism”:A Case Study of Scenic Roads of Nanshan in Chongqing 被引量:1
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作者 DONG Lili LEI Yi zhao kangdi 《Journal of Landscape Research》 2020年第2期10-18,共9页
"All-for-one tourism" emphasizes the transformation of tourism from the original single scenic spot service to "traveling on the road",and advocates the guiding destination service of integrating t... "All-for-one tourism" emphasizes the transformation of tourism from the original single scenic spot service to "traveling on the road",and advocates the guiding destination service of integrating transportation and surrounding scenery sources.As the most abundant carrier of tourism environment,mountainous scenic spots are valued more by the development of natural tourism resources.In addition to the characteristics of scenic spots,how to use scenic roads to create a regional atmosphere has become a focus of tourism construction.Taking scenic roads of Nanshan in Chongqing as an example,this study analyzed the key points of road landscape upgrading under different construction levels,and put forward design strategies from the perspective of regional characteristics and regional cultural elements,so as to effectively enhance the regional landscape characteristics of the roads,with a view to providing reference for relevant planning and design. 展开更多
关键词 All-for-one TOURISM Mountainous SCENIC ROADS LANDSCAPE improvement
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重庆市居住区建筑设计中海绵城市技术的应用 被引量:3
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作者 尹捷 邵宏凯 赵康迪 《城市建筑》 2022年第6期181-183,共3页
在现实生活中,海绵城市技术能够通过“渗、吸、蓄、净、用、排”等方面对于雨水资源做到及时的处理和利用,从而提高雨水的利用率,让雨水资源得到循环。本文以海绵城市理念为基础,对重庆居住区建筑设计进行分析,并且针对该技术如何运用... 在现实生活中,海绵城市技术能够通过“渗、吸、蓄、净、用、排”等方面对于雨水资源做到及时的处理和利用,从而提高雨水的利用率,让雨水资源得到循环。本文以海绵城市理念为基础,对重庆居住区建筑设计进行分析,并且针对该技术如何运用在建筑上进行探讨,对目前存在的问题提出相应的解决策略。 展开更多
关键词 海绵城市 雨水花园 屋顶花园 垂直绿化
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Strategies for Improving the Overall Environmental Quality of Rivers Based on “Renovation and Restoration” Concept: A Case Study of Landscape Planning of Linjiang River, Yongchuan District, Chongqing City
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作者 DONG Lili zhao kangdi YU Wenwen 《Journal of Landscape Research》 2020年第1期14-22,26,共10页
The concept of "renovation and restoration" marks the transformation from urban and rural planning and construction to intensive development mode and to quality improvement stage.The environmental imbalance ... The concept of "renovation and restoration" marks the transformation from urban and rural planning and construction to intensive development mode and to quality improvement stage.The environmental imbalance problem of emphasizing development and neglecting ecology in the past has become the focus of the current urban quality improvement stage.Rivers are related to the origin,development and evolution of cities,affect the layout,transportation and environment of cities,and bear the culture,economy and characteristics of cities.Taking the Linjing River of Yongchuan in Chongqing as an example and taking the concept of "renovation and restoration" as the guidance of the design of the overall environmental quality improvement of the river,this study analyzed and summarized the problems to be solved in the improvement of the environmental quality of the river based on the four river environmental impact factors of water pollution,water resource supply and demand,ecological environment and shore water waterfront type and the strategies of optimizing the aquatic environment management,constructing the ecological landscape pattern,shaping the regional cultural landscape and combining the economic development along the river were put forward in order to improve the overall environmental quality of Linjiang River and provide reference for relevant planning and design. 展开更多
关键词 Renovation and restoration Overall environmental improvement Linjiang River
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