Datasets:
image imagewidth (px) 512 512 | id stringlengths 4 4 | bbox_rd_new listlengths 4 4 | crs stringclasses 1
value | gsd_m float64 1 1 | stuff_c34_mask stringlengths 28 28 | n_stuff_c34 int64 1 3 | things_bag_mask stringlengths 29 29 | n_things_bag int64 1 55 |
|---|---|---|---|---|---|---|---|---|
t000 | [
175088,
401432,
175600,
401944
] | EPSG:28992 | 1 | masks/dev/t000_stuff_c34.png | 1 | masks/dev/t000_things_bag.png | 19 | |
t001 | [
229064,
513408,
229576,
513920
] | EPSG:28992 | 1 | masks/dev/t001_stuff_c34.png | 1 | masks/dev/t001_things_bag.png | 38 | |
t002 | [
104288,
421144,
104800,
421656
] | EPSG:28992 | 1 | masks/dev/t002_stuff_c34.png | 3 | masks/dev/t002_things_bag.png | 5 | |
t003 | [
202712,
510168,
203224,
510680
] | EPSG:28992 | 1 | masks/dev/t003_stuff_c34.png | 1 | masks/dev/t003_things_bag.png | 24 | |
t004 | [
112744,
477768,
113256,
478280
] | EPSG:28992 | 1 | masks/dev/t004_stuff_c34.png | 1 | masks/dev/t004_things_bag.png | 4 | |
t005 | [
179656,
582640,
180168,
583152
] | EPSG:28992 | 1 | masks/dev/t005_stuff_c34.png | 1 | masks/dev/t005_things_bag.png | 2 | |
t006 | [
60824,
384224,
61336,
384736
] | EPSG:28992 | 1 | masks/dev/t006_stuff_c34.png | 2 | masks/dev/t006_things_bag.png | 8 | |
t007 | [
199016,
318472,
199528,
318984
] | EPSG:28992 | 1 | masks/dev/t007_stuff_c34.png | 2 | masks/dev/t007_things_bag.png | 21 | |
t008 | [
241128,
577224,
241640,
577736
] | EPSG:28992 | 1 | masks/dev/t008_stuff_c34.png | 1 | masks/dev/t008_things_bag.png | 2 | |
t009 | [
248136,
575168,
248648,
575680
] | EPSG:28992 | 1 | masks/dev/t009_stuff_c34.png | 1 | masks/dev/t009_things_bag.png | 6 | |
t010 | [
139424,
484544,
139936,
485056
] | EPSG:28992 | 1 | masks/dev/t010_stuff_c34.png | 1 | masks/dev/t010_things_bag.png | 1 | |
t011 | [
114168,
547088,
114680,
547600
] | EPSG:28992 | 1 | masks/dev/t011_stuff_c34.png | 2 | masks/dev/t011_things_bag.png | 29 | |
t012 | [
197360,
542712,
197872,
543224
] | EPSG:28992 | 1 | masks/dev/t012_stuff_c34.png | 1 | masks/dev/t012_things_bag.png | 2 | |
t013 | [
242184,
478680,
242696,
479192
] | EPSG:28992 | 1 | masks/dev/t013_stuff_c34.png | 1 | masks/dev/t013_things_bag.png | 4 | |
t014 | [
260568,
532904,
261080,
533416
] | EPSG:28992 | 1 | masks/dev/t014_stuff_c34.png | 1 | masks/dev/t014_things_bag.png | 55 | |
t015 | [
236904,
579248,
237416,
579760
] | EPSG:28992 | 1 | masks/dev/t015_stuff_c34.png | 1 | masks/dev/t015_things_bag.png | 7 | |
t016 | [
107480,
509784,
107992,
510296
] | EPSG:28992 | 1 | masks/dev/t016_stuff_c34.png | 1 | masks/dev/t016_things_bag.png | 27 | |
t017 | [
149032,
486984,
149544,
487496
] | EPSG:28992 | 1 | masks/dev/t017_stuff_c34.png | 2 | masks/dev/t017_things_bag.png | 12 | |
t018 | [
117992,
521512,
118504,
522024
] | EPSG:28992 | 1 | masks/dev/t018_stuff_c34.png | 1 | masks/dev/t018_things_bag.png | 8 | |
t019 | [
131752,
549240,
132264,
549752
] | EPSG:28992 | 1 | masks/dev/t019_stuff_c34.png | 2 | masks/dev/t019_things_bag.png | 3 |
NL aerial proposal benchmark (200 tiles)
200 tiles of Dutch aerial imagery, each 512 × 512 px at 1 m (512 × 512 m), with instance masks for two kinds of object:
- construction land, CBS NBBG2022 class 34 Bouwterrein ("stuff": amorphous, defined partly by use). 291 objects.
- buildings, BAG panden ("things": crisp footprints, ≥ 200 m²). 3189 objects.
It was built for experiment 02 of my Posts series, which compares unsupervised mask proposals from diffusion self-attention against Segment Anything. The metric used there is COCO-style average recall at K proposals per tile.
How the tiles were chosen
Tiles are centred on randomly drawn NBBG2022 class-34 polygons of 1–20 ha anywhere in the
Netherlands (seed 24), with a random offset of up to ±120 m and no two tiles overlapping.
Every tile contains at least one construction object, kept only if ≥ 5000 m² of it lies inside the
tile. Splits: dev = the first 20 tiles (for choosing hyperparameters), test = the other 180.
Files
dev/tNNN.png,test/tNNN.png: RGB, PDOK2022_orthoHR(8 cm orthophoto served at 1 m).masks/<split>/tNNN_stuff_c34.png,masks/<split>/tNNN_things_bag.png: 16-bit instance masks (0 = background, 1…N = objects). Paths are in the metadata columnsstuff_c34_mask,things_bag_mask.<split>/metadata.jsonl: tile ID, bounding box in RD New (EPSG:28992), object counts.
Rebuild from source with build_tiles.py in the repository.
Licences and attribution
- Imagery: © Beeldmateriaal Nederland, via PDOK, CC BY 4.0
- Construction land: CBS, NBBG2022 publicatiebestand, CC BY 4.0
- Buildings: Kadaster, BAG via PDOK, CC0
- This compilation: CC BY 4.0, Athithya Loganathan
Caveats
Class 34 includes serviced but un-built plots ("braak"), which look like grass. So part of the construction ground truth isn't visible in the image at all, by definition. Building masks are cadastral footprints, not roof outlines, so they can be offset from what the image shows.
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