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arXiv · 2511.10604

Multitask GLocal OBIA-Mamba for Sentinel-2 Landcover Mapping

Zack Dewis·Yimin Zhu·Zhengsen Xu·Mabel Heffring·Saeid Taleghanidoozdoozan·Kaylee Xiao·Motasem Alkayid·Lincoln Linlin Xu
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Abstract

Although Sentinel-2 based land use and land cover (LULC) classification is critical for various environmental monitoring applications, it is a very difficult task due to some key data challenges (e.g., spatial heterogeneity, context information, signature ambiguity). This paper presents a novel Multitask Glocal OBIA-Mamba (MSOM) for enhanced Sentinel-2 classification with the following contributions. First, an object-based image analysis (OBIA) Mamba model (OBIA-Mamba) is designed to reduce redundant computation without compromising fine-grained details by using superpixels as Mamba tokens. Second, a global-local (GLocal) dual-branch convolutional neural network (CNN)-mamba architecture is designed to jointly model local spatial detail and global contextual information. Third, a multitask optimization framework is designed to employ dual loss functions to balance local precision with global consistency. The proposed approach is tested on Sentinel-2 imagery in Alberta, Canada, in comparison with several advanced classification approaches, and the results demonstrate that the proposed approach achieves higher classification accuracy and finer details that the other state-of-the-art methods.

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Zack Dewis, Yimin Zhu, Zhengsen Xu, Mabel Heffring, Saeid Taleghanidoozdoozan, Kaylee Xiao, Motasem Alkayid, Lincoln Linlin Xu. 2025-11-13. Multitask GLocal OBIA-Mamba for Sentinel-2 Landcover Mapping. https://arxiv.org/abs/2511.10604

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