| 基于U-Net模型的城建施工扬尘源识别与分类 |
| Identification and Classification of Fugitive Dust Sources in the Urban Construction Based on U-Net Model Structure with Remote Sensing Images |
| 投稿时间：2023-04-17 修订日期：2024-06-08 |
| DOI：10.19316/j.issn.1002-6002.2024.05.25 |
| 中文关键词: U-Net模型 拆迁未建区 城建施工 扬尘源 遥感解译 |
| 英文关键词:U-Net model demolition area urban construction fugitive dust source remote sensing images interpretation |
| 基金项目: |
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| 中文摘要: |
| 城建施工不同环节均不可避免地存在各类施工扬尘,其中拆迁未建区与建设初期、中期和后期的建筑工地是城市施工产生扬尘的4类重要源头。以宁波市辖区的平原地区为研究区,选择2019年3—8月的谷歌地球高分遥感影像,基于U-Net模型的遥感影像语义分割的方法,并采用基于人工与空间关系的混合校正策略,开展施工扬尘源的识别与分类方法研究,结果显示:模型可以实现4类扬尘源的识别与分类;针对部分扬尘源识别与分类效果较差的局部地区,采用基于人工与空间关系的混合校正策略可以有效校正模型分类的结果;共识别到4类扬尘源940处,面积4 430.23 hm2,主要集中在中心城区的中部地区,且拆迁未建区和建设初期工地的扬尘源较多,建设中期和后期工地的扬尘源相对略少。 |
| 英文摘要: |
| Various types of construction dust inevitably accompany the different phases of urban construction.Among them,the demolition areas and construction sites in the early,middle and late phases of construction are four important fugitive dust sources generated by urban construction.Taking the plain area of Ningbo City as the research object,based on the semantic segmentation of Google Earth high-resolution remote sensing image between March and August in 2019 with U-Net model,this research studied the identification and classification of fugitive dust sources.It found that the model could assist in the identification and classification of four types of fugitive dust sources,and the mixed correction strategy combining the artificial identification and spatial relations could be uesd to correct the results of model classification in local areas that had a low efficiency in identifying and classifying the dust types.And 940 sites of fugitive dust sources covering an area of 4430.23 ha were identified.It concluded that the sources of these four dust types were mainly concentrated in the middle part of the central city,and there were more fugitive dust sources in the demolition areas and in the early phase of construction,while there were relatively few fugitive dust sources in the middle and late phases. |
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