Hi @Agedev, thanks for checking about these datasets!
RE: the CrowdAI Mapping Challenge dataset, because its license contains the NonCommercial clause, it’s not permissive enough and can’t be used in this challenge (same issue as with the xView2 dataset inquired about earlier in thread).
In any case, I know that that CrowdAI dataset is a derived subset of the SpaceNet 2 Buildings dataset. The original SpaceNet datasets are OK for use in this challenge as they all have a Creative Commons Attribution-ShareAlike 4.0 International License.
Re: the DSTL Kaggle competition dataset, I can’t find any data licensing info either. If it’s WorldView imagery from DigitalGlobe/Maxar, those are usually not licensed for open usage. In general, if there’s no explicit and permissive open source license or public statement by the producers of how a dataset is intended for use by others, it can’t be used in our challenge. So for the DSTL dataset case, it’s not OK to be used in our challenge.