A comprehensive transferability evaluation of U-Net and ResU-Net for landslide detection from Sentinel-2 data (case study areas from Taiwan, China, and Japan)
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Earthquakes and heavy rainfalls are the two leading causes of landslides around the world. Since they often occur across large areas, landslide detection requires rapid and reliable automatic detection approaches. Currently, deep learning (DL) approaches, especially different convolutional neural network and fully convolutional network (FCN) algorithms, are reliably achieving cutting-edge accuracies in automatic landslide detection. However, these successful applications of various DL approaches have thus far been based on very high resolution satellite images (e.g., GeoEye and WorldView), making it easier to achieve such high detection performances. In this study, we use freely available Sentinel-2 data and ALOS digital elevation model to investigate the application of two well-known FCN algorithms, namely the U-Net and residual U-Net (or so-called ResU-Net), for landslide detection. To our knowledge, this is the first application of FCN for landslide detection only from freely available data. We adapt the algorithms to the specific aim of landslide detection, then train and test with data from three different case study areas located in Western Taitung County (Taiwan), Shuzheng Valley (China), and Eastern Iburi (Japan). We characterize three different window size sample patches to train the algorithms. Our results also contain a comprehensive transferability assessment achieved through different training and testing scenarios in the three case studies. The highest f1-score value of 73.32% was obtained by ResU-Net, trained with a dataset from Japan, and tested on China’s holdout testing area using the sample patch size of 64 × 64 pixels.
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AI segmentation accuracy was assessed via patch-level cross-validation drawn from the training acquisitions.
“First, AI segmentation accuracy was assessed via patch-level cross-validation drawn from the training acquisitions; independent validation against field-surveyed vegetation boundaries across distinct climatic and geomorphological zones is required 28 .”
From AI-driven digital twinning quantifies the trade-off between flood conveyance and riparian stability under climate extremes (2026) · cites this paper as [28]
The Materials and methods section (Implementation details; page unavailable) says each image was split into separate training and testing areas. The Results section (Scenario 1 and accuracy; page unavailable) says accuracy was assessed using patches from holdout testing areas, not patch-level cross-validation drawn from the training areas. The study concerns landslide detection, not vegetation boundaries. (LLM, conf=0.86)
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Road Extraction by Deep Residual U-Net
Zhang, Z., Liu, Q., & Wang, Y. (2018) · IEEE Geoscience and Remote Sensing Letters · doi:10.1109/lgrs.2018.2802944 · Cited by 3,179 · see citing works
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Sorted by citations
Shin, J. H., Go, S. H., & Park, J. H. (2026) · Scientific Reports · doi:10.1038/s41598-026-63704-8
- Authors
- Ghorbanzadeh, O., Crivellari, A., Ghamisi, P., Shahabi, H., & Blaschke, T.
- Affiliations
- University of Salzburg (AT)
- Helmholtz-Zentrum Dresden-Rossendorf (DE)
- Slovak Academy of Sciences (SK)
- Corresponding author
- Ghorbanzadeh, Omid
- Venue
- Scientific Reports
- Published
- 2021-07-16
- Volume
- 11
- Issue
- 1
- Pages
- 14629-14629
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC8285525
- OpenAlex
- W3180107394
- Cited by
- 169
- References
- 1
- Citations by year
- 2026: 31 · 2025: 31 · 2024: 33 · 2023: 24 · 2022: 49 · 2021: 1
- FWCI
- 25.14
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Austrian Science Fund (DK W 1237-N23)
- Topics
- Physical Sciences › Environmental Science › Management, Monitoring, Policy and Law › Landslides and related hazards
- Physical Sciences › Engineering › Media Technology › Remote-Sensing Image Classification
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Remote Sensing and Land Use
- Keywords
- landslide detection, U-Net, ResUNet, fully convolutional network, Sentinel-2, transfer learning, rainfall-induced landslides
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