S2DSR · Sentinel-2 at 2.5 m

Why S2DSR

Free imagery is everywhere. Fine detail isn’t.

Sentinel-2 images Earth’s land surface every few days, free of charge, but at 10 m a family house covers a pixel or two. Aerial imagery shows far more, yet it is costly and acquired only every few years. S2DSR brings the free imagery closer to aerial detail.

Sixteen pixels for every one
Each 10 m pixel becomes sixteen at 2.5 m, so field boundaries, roads, rivers and built-up areas that blur together come apart.
Learned from aerial imagery
The models learn from Sentinel-2 images paired with Swiss aerial imagery of the same ground, so the detail they add is grounded in what is really there.
Measured, not claimed
Every area you can open is held-out test data, scored against an aerial image of the same ground, with plain enlargement shown beside it for comparison.
Runs in your browser
Run the models yourself, right in the viewer, on your own device. It reproduces the published result, and no image is uploaded.

How it works

From 10 m to 2.5 m, checked against reality.

The same ground near Effretikon, three ways.

Sentinel-2 · 10 m
01
The free satellite image
Sentinel-2 records red, green, blue and near-infrared light at 10 m, and Copernicus makes every image free to use.
S2DSR · 2.5 m
02
Super-resolved by a neural network
A deep network trained on thousands of Swiss image pairs predicts the 2.5 m image.
Aerial image · reference
03
Compared with aerial imagery
swisstopo’s SWISSIMAGE of the same ground, reduced to 2.5 m, is the reference every result is scored against.