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Stream/Area:
-
Subject:
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Paper ID:
IJSREM68409
Volume:
10 |
10 |
Oct 2026
Pages:
1-9
Publication Frequency:
Monthly (12 issues per year)
License:International Journal of Scientific Research in Engineering and Management follows the Creative Commons Attribution 4.0 (CC BY 4.0) License, allowing free use and distribution with proper attribution.
Master of Computer Applications
Progressive Education Society’s Modern College of Engineering
Master of Computer Applications
Progressive Education Society’s Modern College of Engineering
Master of Computer Applications
Progressive Education Society’s Modern College of Engineering
Master of Computer Applications
Progressive Education Society’s Modern College of Engineering
Master of Computer Applications
Progressive Education Society’s Modern College of Engineering
Rapid building-damage assessment from satellite imagery supports disaster response, yet manual survey is slow and many change-detection benchmarks provide only binary changed/unchanged labels. This paper presents an end-to-end pipeline for pixel-level, five-class building-damage segmentation from pre- and post-disaster image pairs in the xBD dataset. A Siamese U-Net with a shared ImageNet-pretrained ResNet34 encoder fuses post-event features with absolute feature differences at five scales and is trained with a class-weighted Focal plus Dice loss. Data are partitioned by disaster event: seven events for training, two for validation and one, Hurricane Michael, for testing. On the held-out event, the selected checkpoint reaches 87.6% pixel accuracy and a building-localisation F1 of 0.780, but damage grading remains weak: the macro F1 over the four damage classes is 0.286, with class F1 of 0.145, 0.150 and 0.235 for minor, major and destroyed damage. Training macro F1 rises to 0.595 while validation macro F1 stays below 0.179, which indicates poor transfer across events, and 59.4% of major-damage pixels are assigned to no damage. Grad-CAM overlays and a Django web interface are provided; neither has been quantitatively validated. This is a preliminary single-seed study on one test event, without baselines or ablations.
KEYWORDS
We presented a documented pipeline for five-class building-damage segmentation from bi-temporal imagery and evaluated it on a disaster event unseen during training. The model localises buildings with an F1 of 0.780, but its damage grading is weak (macro F1 0.286) and mostly errs towards under-grading, and training and validation behaviour diverge. The results are a starting point, not a demonstration of generalisation: they come from one test event and one seed without baselines. Until multi-event evaluation, ablations, footprint gating and expert validation are done, the system should not inform operational decisions.
[1] United Nations Office for Disaster Risk Reduction, Human Cost of Disasters: An Overview of the Last 20 Years (2000–2019). Geneva, Switzerland, 2020. [2] R. Gupta et al., “Creating xBD: A dataset for assessing building damage from satellite imagery,” in Proc. CVPR Workshops, 2019. [3] X. X. Zhu et al., “Deep learning in remote sensing: A comprehensive review and list of resources,” IEEE Geosci. Remote Sens. Mag., vol. 5, no. 4, pp. 8–36, 2017. [4] L. Ma et al., “Deep learning in remote sensing applications: A meta-analysis and review,” ISPRS J. Photogramm. Remote Sens., vol. 152, pp. 166–177, 2019. [5] H. Chen and Z. Shi, “A spatial-temporal attention-based method and a new dataset for remote sensing image change detection,” Remote Sens., vol. 12, no. 10, art. 1662, 2020. [6] R. C. Daudt, B. Le Saux, A. Boulch, and Y. Gousseau, “Urban change detection for multispectral earth observation using convolutional neural networks,” in Proc. IEEE IGARSS, 2018. [7] Y. Shen et al., “BDANet: Multiscale convolutional neural network with cross-directional attention for building damage assessment from satellite images,” arXiv:2105.07364, 2021. [8] Z. Zheng, Y. Zhong, J. Wang, A. Ma, and L. Zhang, “Building damage assessment for rapid disaster response with a deep object-based semantic change detection framework: From natural disasters to man-made disasters,” Remote Sens. Environ., vol. 265, art. 112636, 2021. [9] A. Singh, “Digital change detection techniques using remotely-sensed data,” Int. J. Remote Sens., vol. 10, no. 6, pp. 989–1003, 1989. [10] R. C. Daudt, B. Le Saux, and A. Boulch, “Fully convolutional Siamese networks for change detection,” in Proc. IEEE ICIP, 2018.
Publication Date
10/28/2026
Peer Review Type
Double-Blind Peer Review
Review Rounds: 2
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The authors declare no conflict of interest related to this research work.
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