简历详情

Strategies for the efficient estimation of soil organic matter in salt-affected soils through Vis-NIR spectroscopy: Optimal band combination algorithm and spectral degradation

期刊: Geoderma  2021
作者: Lijing Han,Zhenshan Li,Xiangyu Ge,Guolin Ma,Jingzhe Wang,Chuanmei Zhu,Jianli Ding,Zipeng Zhang
DOI:10.1016/j.geoderma.2020.114729

Multi-U-Net: Residual Module under Multisensory Field and Attention Mechanism Based Optimized U-Net for VHR Image Semantic Segmentation

As the acquisition of very high resolution (VHR) images becomes easier, the complex characteristics of VHR images pose new challenges to traditional machine learning semantic segmentation methods. As an excellent convolutional neural network (CNN) structure, U-Net does not require manual intervention, and its high-precision features are widely used in image interpretation. However, as an end-to-end fully convolutional network, U-Net has not explored enough information from the full scale, and there is still room for improvement. In this study, we constructed an effective network module: residual module under a multisensory field (RMMF) to extract multiscale features of target and an attention mechanism to optimize feature information. RMMF uses parallel convolutional layers to learn features of different scales in the network and adds shortcut connections between stacked layers to construct residual blocks, combining low-level detailed information with high-level semantic information. RMMF is universal and extensible. The convolutional layer in the U-Net network is replaced with RMMF to improve the network structure. Additionally, the multiscale convolutional network was tested using RMMF on the Gaofen-2 data set and Potsdam data sets. Experiments show that compared to other technologies, this method has better performance in airborne and spaceborne images.

期刊: Sensors  2021
作者: Guolin Ma,Xiangyu Ge,Bohua Liu,Jianli Ding,Si Ran
DOI:10.3390/s21051794

Digital mapping of soil salinization based on Sentinel-1 and Sentinel-2 data combined with machine learning algorithms

期刊: Regional Sustainability  2021
作者: Si Ran,Zipeng Zhang,Lijng Han,Jianli Ding,Guolin Ma
DOI:10.1016/j.regsus.2021.06.001