D³-Dataset: A Multi-Temporal Fine-Grained Damage Assessment Dataset for Critical Infrastructure

It provides object-level annotations for 15 infrastructure categories with four damage levels: intact, minor damage, major damage, and destroyed. The released dataset package includes polygon-based annotation files, single-channel segmentation masks, detailed scene-level metadata, and information required to identify and reconstruct the corresponding multi-temporal imagery.

Due to redistribution restrictions associated with the source imagery, the original Google Earth imagery is not redistributed. Detailed acquisition metadata and data preparation information are provided to facilitate reproducibility and further research on critical infrastructure localization and damage assessment.