High-Resolution Multispectral Individual Tree Crown Annotations from Digital Orthophotos in Halle (Saale), Germany

Dataset description

This dataset contains geospatial RGBI image tiles and per-tile polygon annotations for tree crown delineation in Halle, Germany. Raster tiles are provided as GeoTIFF files and annotations are provided as ESRI Shapefiles. Each raster tile has a ground sampling distance of 20 cm. With a tile size of 500 x 500 pixels, each tile covers 100 m x 100 m on the ground.

Raster tiles are named tile_<x>_<y>.tif, and their corresponding label shapefiles use the same tile indices with a label_ prefix, i.e. label_tile_<x>_<y>.shp; for example, tile_8_18.tif maps to label_tile_8_18.shp. This convention is used in the DeepTrees tree segmentation software (https://deeptrees.de).

Raster tiles

Source: © GeoBasis-DE/LVermGeo ST 2022.

Labels

The label count is the sum of features across the per-tile label_tile_*.shp files. The three raster tiles without corresponding label shapefiles are tile_0_10.tif, tile_0_11.tif, and tile_1_19.tif, which can be used as background tiles or removed altogether.

*Class descriptions:

• 0: Tree
• 1: Cluster of trees
• 2: Unsure

Consistency notes

All raster tiles and per-tile label shapefiles use EPSG:25832. One label file, label_tile_8_4.shp, contains no polygon features.

Some label polygons extend slightly beyond their corresponding 100 m x 100 m raster tile footprint. These cases still spatially intersect their matching raster tile and are consistent with tree crown polygons crossing tile boundaries.