(1Universidad Politécnica de Valencia, Spain / 2Universidad San Carlos de Guatemala, Guatemala)

In order to continue research in the field of Mayan archaeological heritage, we carried out reverse modelling procedures at the Acropolis in the archaeological site of La Blanca, in the northeast of Guatemala.
The aim of this research is to document Mayan architectural building systems for its technical analysis (interpretation and virtual reconstruction of the original appearance) and diffusion among both the scientific community and the wider public. All with a common further objective: the study and preservation of the archaeological heritage, which also generates cooperation programs for the development of the community of the region.

We obtained a high resolution polygonal B-Rep model from the initial point clouds, and we projected pictures taken from the original architecture to the model to add colour information to the geometries. We generated a low-poly model using geometry simplification techniques, integrating the topological information discarded from the original one into a normal map texture.
We also developed 2D images and plans, generating a comparison factor with previous survey carried out by traditional methods.

The use of that innovative technology in the thorough research of the Mayan architecture allowed us to reach a maximum level of detail that which previous methodology was technically impossible to get.
The use of cutting edge software and 3D technology allowed us also to experiment with new different possibilities of diffusion of the results, like the reproduction in virtual reality of the ruins, the reproduction of 3D physical scale models, or idealised models of virtual reconstructions of the Acropolis with accurate detail. With this model we explored the use of real-time rendering software (game-engines).

Keywords: Reverse modelling Mayan archaeology