The model is then simplified to reduce the triangle count to a manageable level, before normal maps and textures are extracted from the original data by RealityCapture and applied to the mesh. The result is a high-quality textured model ready for import to Twinmotion. The Unreal Engine export preset is used in RealityCapture to get the optimal results, producing an OBJ mesh at the correct scale for use in Twinmotion.
“The quality of the 3D models produced by RealtyCapture is excellent,” says McDonald. “They look amazing once imported into Twinmotion.”
From 3D model to photoreal immersive experience with Twinmotion
Once the 3D model is in Twinmotion—the software has no problem importing the high-resolution asset complete with textures—the team can add the finishing touches to the environment, enabling the Zamani Project to enter the realm of storytelling.
“Twinmotion enables us to bring the heritage site to life for those who are unable to visit it,” says McDonald. “We strive to create animations and experiences that don’t just show a 3D model, but show the model in an environment that matches reality as closely as possible.”
Last year, the Zamani Project team documented nearly the entire site within a day and a half, taking approximately 4,500 photos using a Nikon D7200 DSLR camera and more than 70 color laser scans from a Z+F 5010X scanner, which were then transformed into a plethora of materials—from 3D models and panoramas to still images, animations, and more—with the help of RealityCapture and Twinmotion.
Mapungubwe, South Africa
Another site the Zamani Project worked on was Mapungubwe. Located on the northern border of South Africa, neighboring Zimbabwe and Botswana, and at the joining of the Limpopo and Shashe rivers, Mapungubwe was considered to be the largest kingdom in the sub-continent before being abandoned during the 14th century.
Remaining largely untouched, Mapungubwe encompasses palace sites and entire settlement areas from centuries past. It also boasts two areas recognized as earlier capital cities in a similar untouched state. This rare find enables insight into a society developing over 400 years.