Destroyed ancient temple restored for virtual exploration with RealityCapture.

Five years after its destruction, the ancient Temple of Bel in Palmyra, Syria has been digitally reconstructed by the UC San Diego Library’s Digital Media Lab using cutting-edge 3D methods as RealityCapture for 3D reconstruction and artificial intelligence applications.

Inspired by a past collaboration between the library and UC San Diego’s Levantine Archaeology Laboratory, this project has resulted in the digital preservation of more than a dozen lost reliefs, sculptures, frescos and paintings, all made publicly available on the library’s Digital Collections website.

Destroyed in 2015 during the Syrian civil war, the Temple of Bel has been called the most important temple in the entire Middle East (along with Lebanon’s Baalbek) and served as one of the best-preserved examples of ancient art and architecture, attracting more than 150,000 tourists annually. Through the use of more than 3,000 publicly available digital photographs taken over the course of a decade, the library has successfully recreated the structure with RealityCapture software. Now it can be viewed as Pointcloud, at an online viewing platform.

“This project underscores the library’s commitment to engaging in collaborative efforts to better understand how the university can support emerging teaching and research formats,” said Roger Smith, interim associate university librarian for scholarly tools and methods at the UC San Diego Library.
“It also allows the library to better plan for our role in acquiring, preserving, and sharing scholarship while incorporating new media and data formats.”

Credit: UC San Diego

The digital photographs used to create the virtual rendering of the Temple of Bel were sourced from open access repositories such as the #NEWPALMYRA project, the Roman Society, Oxford University, and many individual tourists, then populated into Pointcloud, which allows users to interactively explore the once-massive temple compound.

People can still contribute with their images to the NewPalmyra project, at the bottom of their homepage.

Additionally, artificial intelligence application Topaz Lab was used to isolate the temple’s important features from other elements that may have appeared in the images such as tourists, weather conditions, and foliage.

“This new technology has allowed the Library to combine image data from many different sources,” said Scott McAvoy, manager of the library’s Digital Media Lab. “For example, a photo from a Polish tourist visiting in 2010 can be combined with a photo from a Japanese tourist visiting five years later to extract 3D features. These images have provided the basis for the reconstruction of this site — without them, we would not have been able to embark on or successfully complete this project.”

This model is a pointcloud instead of a mesh because the Potree web browser allows us to stream pointclouds much more effectively than meshes. Potree converts the pointcloud into an octree structure, allowing for fine level of detail loading based on camera position. You can effectively view multibillion point models in a web browser on a normal desktop over wifi. It's also easier to make fine micro-edits on a huge structure with pointclouds.

Visit this website to view the UC San Diego Library’s digital recreation of the Temple of Bel. Virtual reality is supported through WebVR in the Firefox web browser. UC San Diego community members interested in using Pointcloud technology to access, analyze, and visualize their data are encouraged to reach out to DML Manager Scott McAvoy at

Source of the article: