数字农科院2.0

CT-HiffNet: A contour-texture hierarchical feature fusion network for cropland field parcel extraction from high-resolution remote sensing images

文献类型： 外文期刊

作者： Hao Wu;Junyang Xie;Weihao Deng;Anqi Lin;Abdul Rashid Mohamed Shariff;Shamshodbek Akmalov;Wenbin Wu;Zhaoliang Li;Qiangyi Yu;Qunming Wang;Jian Zhang;Xin Mei;Qiong Hu

作者机构：

关键词： Convolutional neural network;Cropland field parcel;Hierarchical feature fusion;High-resolution remote sensing images;Information extraction

期刊名称： Computers and Electronics in Agriculture

ISSN： 0168-1699

年卷期： 2025 年 239 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Automatically extracting cropland field parcels from remote sensing images is crucial for developing smart agriculture. However, notable spatio-spectral differences captured by multiple remote sensing sensors at different times led to the uncertain contour and texture features among large-scale cropland field parcel, posing challenges for robust and high-precision extraction. To address these challenges, we proposed a contour-texture hierarchical feature fusion network (CT-HiffNet) for cropland field parcels extraction from high-resolution remote sensing images. The CT-HiffNet consists of three modules: a hybrid module integrating attention and guidance method to thoroughly learn the internal texture features as well as external contour features of cropland field parcels; a deep residual shrinkage block for feature encoding to effectively eliminate redundant information during the extraction tasks; and a hierarchical information fusion decoder to enhance contour-texture feature interactions at different scales and minimize information loss during feature restoration. The CT-HiffNet was evaluated across four distinct agricultural landscape regions in China using GaoFen-2 images, as well as in six other global regions using Sentinel-2 and Google Earth images. The results show that CT-HiffNet achieves OA, precision, and recall all exceeding 80% across various regions in China, and in other global validation areas, precision and recall surpass 84% and 86.5%, respectively. This demonstrates its effectiveness in extracting cropland field parcels and indicates the model's strong transferability and generalization capability. In particularly, the contour–texture feature effectively enhanced the boundary recognition of cropland field parcels, contributing to the model adaptability to different acquirement times of remote sensing images. Meanwhile, determining an appropriate sample size is crucial for the performance of CT-HiffNet.

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