A method for extracting road attribute information from remote sensing images based on multi-task learning and its application in the periphery of nuclear power plants
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First author:SU Tiehuan,male,born in 1997,master’s candidate,focusing on intelligent processing of remote sensing images. E-mail:1160933784@qq.com |
Received date: 2025-02-14
Revised date: 2025-03-03
Online published: 2025-10-24
Supported by
National Natural Science Foundation of China(41602333)
Roads,as typical man-made objects,have attracted considerable attention in the field of remote sensing. Previous research has predominantly focused on geometrical feature extraction,with relatively insufficient attention paid to road attribute information such as material, classification, and surrounding features. However,road attribute information is crucial for road management,urban planning,and more. Considering the inherent engineering and geographical relationships among these road attributes,this study adopts a multi-task learning approach. We propose a method for extracting road attributes from visible remote sensing images based on multi-task learning,utilizing a residual network integrated with a channel attention module as the backbone. This is further enhanced with a foreground auxiliary module and a feature pyramid module to augment the focus on road targets and the capability for multi-scale processing. Ultimately,the study achieves the classification of road material,classification,and surrounding feature types (background) in visible remote sensing images. and proved the overall accuracy of the network,demonstrating that convolutional networks can effectively extract features and learn engineering and geographical relationships. In the application to the periphery of a nuclear power plants,this method addressed the complex environment and strategic importance of nuclear facilities,validating its effectiveness in practical scenarios,which is of significant importance for ensuring the safe operation of nuclear power plants and the rational planning of surrounding areas.
SU Tiehuan , QIN Kai , ZHAO Yingjun , AN Zijia , HAO Yuxi . A method for extracting road attribute information from remote sensing images based on multi-task learning and its application in the periphery of nuclear power plants[J]. World Nuclear Geoscience, 2025 , 42(2) : 374 -384 . DOI: 10.3969/j.issn.1672-0636.2025.02.012
表1 数据集样例Table 1 The samples of datasets |
| 道路遥感影像 | 分割图像 | 分类标签 |
|---|---|---|
![]() | ![]() | 材质:柏油 分级:高速、干道、小径 背景:林地绿地 |
![]() | ![]() | 材质:柏油 分级:干道、小径 背景:稀疏城区 |
![]() | ![]() | 材质:柏油、水泥 分级:干道、小径 背景:林地绿地 |
![]() | ![]() | 材质:柏油 分级:小径 背景:密集城区 |
表2 消融实验结果Table 2 The results of ablation experiment |
| 序号 | 网络结构 | 材质准确率/% | 分级准确率/% | 背景准确率/% |
|---|---|---|---|---|
| 1 | ResNet50 | 67.31 | 68.69 | 75.5 |
| 2 | SE-ResNet50 + Foreground | 67.78 | 66.73 | 72.95 |
| 3 | ResNet50 + FPN + Foreground | 69.48 | 72.1 | 73.06 |
| 4 | SE-ResNet50 + FPN | 66.41 | 63.57 | 68.84 |
| 5 | SE-ResNet50 + FPN + Foreground | 71.85 | 71.24 | 76.27 |
表3 多任务学习对比实验结果Table 3 The comparison experiment results of multi-task learning |
| 编号 | 任务 | 材质准确率/% | 分级准确率/% | 背景准确率/% |
|---|---|---|---|---|
| a | 材质 | 67.98 | - | - |
| b | 分级 | - | 71.42 | - |
| c | 背景 | - | - | 73.17 |
| d | 材质+分级 | 68.05 | 73.84 | - |
| e | 材质+分级+背景 | 71.85 | 72.1 | 76.27 |
表4 东海第二核电站区域道路属性信息提取结果展示Table 4 Extraction results of road attribute information in the Tokai Daini nuclear power plant area |
| 影像 | 真值 | 识别结果 |
|---|---|---|
| | 材质:柏油 分级:高速、干道 背景:密集城区 | 材质:柏油 分级:高速、干道 背景:密集城区 |
| | 材质:柏油、砂土 分级:干道、小径 背景:林地绿地 | 材质:柏油、砂土 分级:干道、小径 背景:林地绿地 |
| | 材质:柏油、水泥、砂土 分级:干道 背景:裸土水域 | 材质:柏油、水泥、砂土 分级:干道 背景:稀疏城区 |
| | 材质:柏油 分级:干道、小径 背景:稀疏城区 | 材质:柏油、水泥 分级:干道、小径 背景:稀疏城区 |
蓝色—检出不存在的标签;红色—检出但错误的标签;绿色—未被检出的真值。 |
表5 东海第二核电站周边区域道路属性信息提取结果对比Table 5 Comparison of the extraction results of road attribute information in the periphery of the Tokai Daini nuclear power plant |
| 方法 | 学习策略 | 准确率/% |
|---|---|---|
| 本文方法 | 多任务 | 85.01 |
| 本文方法 | 背景任务 | 89.06 |
| ResNet50 | 背景任务 | 70.31 |
| ResNet152 | 背景任务 | 73.43 |
| VGG16 | 背景任务 | 54.69 |
| VGG19 | 背景任务 | 56.25 |
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