deadtrees.earth-aerial: A Multi-Resolution Aerial Image Dataset for Tree Cover and Mortality Detection

Forests worldwide are increasingly threatened by climate change and disturbances such as fire, pests, and pathogens, creating a need for scalable monitoring of tree cover and tree mortality. Aerial imagery from drones and aircraft enables detailed mapping of tree crowns and mortality, but progress is limited by the lack of globally distributed, multi-biome, harmonized datasets for joint segmentation of tree cover and mortality. To address this, we introduce two open, machine-learning-ready datasets for joint segmentation of tree cover and tree mortality from centimeter-scale aerial imagery across globally distributed sites. Our training dataset, DTE-aerial-train, comprises 346K image patc...

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