I won the overall contest and also all the 4 city level prizes on the SpaceNet Challenge Round 2. This blogpost describes my winning solution on the public challenge hosted by Topcoder Marathon Match. Summary¶ Adding OpenStreetMap layers into the input of U-Net model significantly improves F-score. For training a deep neural network model, the computational time on p2.xlarge (Tesla K80) is two tim
![1st place Solution for the SpaceNet2 | ho.lc](https://cdn-ak-scissors.b.st-hatena.com/image/square/74848dcd81a10c441becf7553cc1a5b7653852ca/height=288;version=1;width=512/https%3A%2F%2Fho.lc%2Fimages%2Fsn2_vegas_example.jpg)