“Le portail de la Valfenière” transforms from ancient to present-day and from real to virtual.
Le portail de la Valfenière, the gate of the Chartreuse du Val de Bénédiction of Villeneuve-Lès-Avignon (Carthusian monastery), is located in the Gard department in southern France. It was constructed by architect François de Royers de la Valfenière and sculptor Barthé-lemy Grangier in 1649. The gate represents typical French Style in architecture with strong characteristic features and gorgeous sculptural decoration.
The 3D reconstruction model was generated by software ImageModeler, one of the best Photo-Modelling programs that produce 3D models from 2D digital images. This 3D model was the first work during the period when I began studying at 3D monuments and heritage in the MAP laboratory of Marseille in 2007.
To start the Photo-Modelling, I shot several high resolution images around the gate with a digital camera Nikon D200.
The interface of ImageModeler with the calibration functions by markers on different images.
After that, I loaded these images into ImageModeler and performed the calibration with the relevant markers among these images. Therefore, a spatial calibration system was built. Then I reconstructed the features and sculptural decoration of the gate by these reference images and relevant markers. Texturing was the final step. I used Photoshop to optimise the quality of the texture according to the details in the reference images. It was a time consuming job. (I simplified the detail of operation here and I will expound on it in the tutorial section.)
The procedure of Photo-Modelling performed by ImageModeler.
From left to right: Markers calibration, Photo-Modelling, Basic colour texturing, Final texturing.
Modelling for decorative statue by ImageModeler
Compared with the traditional way of measurement and the technique of applying expensive laser scanner, Photo-Modelling method provides the most convenient way to acquire the 3D information from existing objects by digital camera, such as architectural building and spectacular decoration. With ImageModeler, we can also execute photogrammetry in high precision to define the scale and measure the dimension of the model from the digital images. After this 3D reconstruction model, I gained a lot of experience in different kinds of photorealistic 3D reconstruction models.
I am very grateful to my tutor at the MAP laboratory in Marseille, Mr. Livio De Luca. He adopted this 3D reconstruction gate picture as the guide brochure cover for the 2008 MAP laboratory teams' conference. (There are 5 teams in FRE 3315 MAP laboratory, who are situated in different French cities. Their French website is: http://www.map.archi.fr )
I am also honoured that this 3D Photo-Modelling became one of references in the book of «La photomodélisation architecturale » (The architectural Photo-Modelling) and on the website of “Portal of Architectural Image-Based-Modelling”. Mr. Livio De Luca always encouraged me when I was working in France.
The website of “Portal of Architectural Image-Based-Modelling” is multi-lingual website in English, French and Italian:
The website of the book «La photomodélisation architecturale » is in French:
I really like this YouTube link on this project!
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