基于多层神经网络的中分辨SAR图像时间序列建筑区域提取

杜康宁; 邓云凯; 王宇; 李宁

doi:10.12000/JR16060

基于多层神经网络的中分辨SAR图像时间序列建筑区域提取

DOI: 10.12000/JR16060

中国科学院电子学研究所北京 100190

基金项目:

国家自然科学基金(61301025), 中国科学院百人计划

详细信息

作者简介:
杜康宁(1988-),男,博士研究生,合成孔径雷达图像信息提取。E-mail:dukangning11@mails.ucas.ac.cn;邓云凯(1962-),男,研究员,博士生导师,研究方向为星载SAR系统设计、成像及微波遥感理论。E-mail:ykdeng@mail.ie.ac.cn;王宇(1979-),男,研究员,博士生导师,研究方向为星载SAR系统设计及信号处理。E-mail:yuwang@mail.ie.ac.cn;李宁(1987-),男,安徽天长人,毕业于中国科学院电子学研究所,获得博士学位,现为中国科学院电子学研究所助理研究员,研究方向为多模式合成孔径雷达成像及其应用技术。E-mail:lining_nuaa@163.com

通讯作者:
李宁lining_nuaa@163.com

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出版历程
- 收稿日期: 2016-03-19
- 修回日期: 2016-06-12
- 网络出版日期: 2016-08-28

Medium Resolution SAR Image Time-series Built-up Area Extraction Based on Multilayer Neural Network

Institute of Electronics, Chinese Academy of Science, Beijing 100190, China

Funds:

The National Natural Science Foundation of China (61301025), Hundred-Talent Program of the Chinese Academy of Sciences

摘要

摘要: 为提高合成孔径雷达(Synthetic Aperture Radar, SAR)图像时间序列建筑区域提取的准确率和稳定性, 该文结合时间序列图像的特点, 提出了一种基于多层神经网络的建筑提取方法。该方法使用单幅SAR图像进行样本的粗略标记, 并从经过直方图规定化处理后的时间序列图像中获得大量样本。通过单幅SAR图像生成的少量样本确定网络的深度, 并从时间序列生成的样本中筛选出具有更高质量的样本作为最终模型的训练样本。利用数量大且质量高的训练样本学习得到模型参数。使用包含38幅25 m分辨率ENVISAT ASAR图像的数据集进行两组对比实验, 实验结果中该文方法的最低准确率和最低Kappa系数分别90.2%和0.725, 均高于其它3种传统方法, 算法的稳定性以及准确率都有显著提高。此外, 该方法还具有人工操作少、推广性强、训练高效等优点。
- 多层神经网络 /
- 合成孔径雷达 /
- 时间序列 /
- 建筑提取
Abstract: To improve the accuracy and stability of built-up area extraction from Synthetic Aperture Radar (SAR) image time series, in this paper, we propose a multilayer neural-network-based built-up area extraction method that combines the characters of time-series images. The proposed method coarsely tags single images and obtains a large number of samples from time-series images that have been processed by a histogram specification procedure. To generate a training sample dataset, we use samples generated from one image to determine network depth and select samples with higher accuracy from the sample set taken from the time-series images. The final model is trained by the selected large and high quality training dataset. We perform two comparison experiments with 38 25-m resolution ENVISAT ASAR images. Using the proposed method, we achieved 90.2% minima accuracy and a 0.725 minima Kappa coefficient, which are much higher than those of the three conventional methods. Thus, the accuracy and stability of built-up area extraction are significantly improved. In addition, the method proposed in this paper has the advantages of requiring minimal manual operation, well generalization, and training efficiency.
- Multilayer neural network /
- Synthetic Aperture Radar (SAR) /
- Time-series /
- Built-up extraction

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参考文献(18)

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