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Reconstruction of a pre-romanesque church using SfM

During the academic year 2015/16 a group of students and myself have been working on the reconstruction of a pre-romanesque church using Structured from Motion methods. The original idea was due to Ana Arobes-Diaz, and the team of students that was working in the project comprised Nerea la Torre-Fernandez, Andrea Rodriguez-Mayo and Mario Perez-Rodriguez.

In this webpage you can check the results of such project and download some of the products such as pointclouds and meshes at different resolutions.

And yes, we could have used (and indeed we did try) 123 Catch or Photosynth but they are simply unable to properly handle thousands of pictures and/or produce the result we aimed to.

Orthophotos

Click on the photos to explore zoomable large versions.

Front view Back view
Left view Right view

Perspective views

Click on the photos to explore zoomable large versions.

Perspective front view Perspective back view

Video

Point cloud

You can browse the actual 81 million points cloud by clicking on the picture

Point cloud

Meshes

You can play with meshes at different resolutions in Sketchfab and TinkerCAD (click on the pictures).

Sketchfab mesh TinkerCAD version

The TinkerCAD version is printable and, as you can see, there have been many flawed versions before this one:

Real vs Virtual

Pitfalls and caveats

Downloads

Should you use any of these materials please cite it as: Nerea la Torre-Fernandez, Andrea Rodriguez-Mayo, Mario Perez-Rodriguez, and Daniel Gayo-Avello "Reconstruction of a pre-romanesque church using SfM" (2016). Available at: http://danigayo.info/teaching/ticharte/

Acknowledgements

We are in debt with Carlota Abello from Dogram who delivered a fantastic lecture on SfM applied to cultural heritage and provided very valuable advice to our team.

As said, the original idea of reconstructing a pre-romanesque building was due to Ana Arobes who worked on her own to reconstruct San Miguel de Lillo as it was originally built.

First draft of San Miguel de Lillo in Sketchfab
San Miguel de Lillo as of today 3D reconstruction of the original building

Tools

We have used the following software and tools (most of it is open source, free, online or there are educational licenses):