The BTF sample is licensed under the following license:

All datasets are free to use, modify and re-distribute for research and scholarship purposes.
Furthermore, permission is granted to publish images made using the BTF data in a scholarly
article or book, as long as proper credit is given to the University of Bonn's BTF Database.
Any usage of the datasets for commercial purposes is not allowed without our permission and
in some cases the permission of third parties. For more information about the databases,
please refer to:

Michael Weinmann, externJuergen Gall and Reinhard Klein. extern"Material Classification
based on Training Data Synthesized Using a BTF Database", accepted at ECCV 2014. Please
externcite this work when using the datasets.
