The Petra dataset (c) 2014 by Francois Malan

The Petra dataset is licensed under a
Creative Commons Attribution 3.0 Unported License.

You should have received a copy of the license along with this
work.  If not, see <http://creativecommons.org/licenses/by/3.0/>.


All files with the prefix "JDW_" are (c) 2014 by Joshua D. Warner.

They were taken, handheld, with a Nikon D7000 digital camera in 
Arches National Park, Utah, USA. 

These Arches photos are licensed under a
Creative Commons Attribution 4.0 International (CC BY 4.0) License.

You should have received a copy of the license along with this
work.  If not, see <http://creativecommons.org/licenses/by/4.0/>