Gorproekt AR - an application running on the method of augmented reality. Markers for Augmented Reality you can take from here: http://www.akdgroup.ru/fbxmodels/GENPLAN.jpg, http://www.akdgroup.ru/fbxmodels/basement.jpg, http://www.akdgroup.ru /fbxmodels/basement_2.jpg
To use the markers, you can print them and put on a flat surface. After that, click on "Scan", and when he appears, your camera, bring it on a marker.