Image Image Image Image Image Image Image Image Image

The Chillon Project

How to map the inside and outside of a whole castle efficiently in full 3D? Our Chillon project demonstrates the accuracy, feasibility and efficiency of image based 3D modelling for very complex architectural objects.

The Project

Our challenge: Using consumer grade cameras to create a georeferenced and very accurate 3D model of Chillon Castle in Switzerland, a highly complex architectural structure.

In half a day, we acquired over 6’200 aerial and terrestrial images using DJI Phantom 2 Vision, GoPro Hero 3+, Canon 6D and Sony alpha 7r. The images were then processed with Pix4Dmapper and converted into a very dense 3D point cloud of over 95 million points integrating the indoor and outdoor structures of Switzerland’s most visited historic monument.

Watch the video of the project here.

The 3D Model

The final model integrates the outside structure of the castle as well as all inside courtyards and 18 inside rooms. The accuracy of the model varies between 5 mm and 20 cm and has been achieved through geo-referencing with 9 GCPs. In total, 19 datasets were processed individually and then merged into larger projects.

Click on the right to view the triangle mesh produced out of the 3D point cloud.

sketchfab capture

View and explore both the outside and inside model of the 3D point cloud with our WebGL viewer.

Choose the resolution that best matches your computer configuration and bandwidth:

      • Desktop computer with high performance graphic card and high internet bandwidth for “High resolution” viewing experience

      • Laptop computer or medium internet bandwidth for “Low resolution” viewing experience

      • Supported browsers: Chrome, Safari, Firefox, IE11

Outside model

High resolution      Low resolution

Inside model 


High resolution        Low resolution

The White Paper

This project demonstrates the potential of purely image based 3D reconstruction for applications such as Cultural Heritage, Archaeology and Architecture. It shows the possibility of using both terrestrial and aerial imagery at nadir and oblique angles in the same project, opening up countless new applications using affordable and easily available sensors like the GoPro or DSLR cameras.

Read the White Paper to discover the full details.

Download White Paper