The Hassan mosque at the digital era.

International audience About ten years ago, the double behest of late Driss Aboutajdine and El Mustapha Mouad-dib permitted setting up research partnership on the use of image processing and cultural heritage. In 2015, despite his workload, Professor Driss Aboutajdine has put all his energy so a common complementary action could take place and occur, convening hence the numerical sciences, precisely 3D techniques, serving cultural heritage. This action went on to give birth to Athar-3D project, with the ambition to resolve questions pertaining to 3D modeling and computer vision having along a positive impact on cultural and architectural heritage perception. The research we carried out in this framework aims to the digitizing of Hassan Mosque, its reconstitution and the achievement of mechanism and application to heighten awareness and to better know and communicate about cultural heritage matter. To our knowledge, this is the first work of its kind and with this scientific extent on cultural and architectural heritage in Morocco. Moreover, finding an extension of academic research in the dissemination, the bringing back and mediation on this monument that stands for a symbol and emblem of Morocco's capital, is a direct valorization of research work performed in Moroccan research laboratories. This paper presents representative results of the whole project, including its historical and arts history, especially on Rabat Hassan Mosque. We are providing, for the first time, results that make possible 3D display of what Hassan Mosque might looks like. This model with the vocation to be a scientific support and medium and to which we attempted to bring all the necessary rigor. This will serve the scientific study of the monument, the popularization and awareness raising with respect to cultural heritage matters in general and Hassan Mosque in particular. We hope, therefore, to remain faithful to one of the wishes of Professor Driss Aboutajdine,