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WoodBR-Cross is a new public dataset of 4,875 wood surface images grouped into 38 taxonomic classes and linked to 303 distinct trees, with a species-level subset of 3,406 images across 20 classes and 214 trees. The benchmark introduces three tasks that compare duplicate-aware image partitions, species subset partitions, and individual-tree-disjoint partitions, ensuring no tree appears in both training and test sets within a fold. Experiments with ResNet‑50, ConvNeXt‑Tiny, and ViT‑B/16 show that ConvNeXt‑Tiny and frozen DINOv2 features achieve macro‑F1 scores of 0.8621 and 0.9000, respectively, on the tree‑level disjoint split, providing realistic estimates of performance on unseen trees.
arXiv:2510. 09458v2 Announce Type: replace-cross Abstract: Interest in forestry automation is growing alongside rapid advances in deep learning.
FOR-species20K is the largest public LiDAR benchmark for tree‑species classification, combining 25 datasets across 33 species. A multi‑resolution, multi‑view ConvNeXtV2 model raised the hidden‑test accuracy from 79.5 % to 85.0 %, placing first at submission. However, cross‑source experiments show that this score does not reflect true source‑disjoint generalization, with performance dropping dramatically when species are held out by source.
The paper presents a deep learning approach for detecting woody clearing using bitemporal Sentinel‑2 imagery from New South Wales, Australia. By introducing a loss‑scaling coefficient, the authors align the model’s objective with end‑user metrics, boosting precision and recall. They further demonstrate zero‑shot transfer to woody regrowth and segmentation tasks, achieving significant error reductions and high F1 scores through image augmentation and generation techniques.
The study presents a new approach to detect Christmas tree plantations in high‑resolution aerial imagery, treating the task as a rare‑target semantic segmentation problem. It introduces a Hard Negative Mining strategy that significantly improves precision‑recall performance, achieving an IoU of 0.733 and an F1‑score of 0.846 on a 2020 test set. Temporal transfer experiments demonstrate the model’s ability to generalize across years, while large‑scale validation highlights the challenge posed by the plantations’ small spatial footprint.
arXiv:2606.20223v2 Announce Type: replace Abstract: Camera-trap monitoring in African tropical forests increasingly extends beyond closed-canopy interiors to riverbanks, clearings, and park edges. Am...