A fotogrametria na conservação do património vernacular com foco na preservação digital da memória dos antigos ksour argelinos: estudo de caso do Kenadsa Ksar

This paper presents the results of our research project KSOUR3D and GIS4D, which aim to explore the use of photogrammetry as an innovative method for the survey, preservation and promotion of the heritage of Algerian Sahara. The adopted approach is based on a methodological strategy and a process model within a global vision of three-dimensional and spatiotemporal modelling (3D/3D+1). Through a case study applied to the Kenadsa ksar, this study underscores the pertinence of establishing a multimodal digital database, which allows the generation of exploitable models for interactive visualisation and scenario planning of heritage interventions. The process is based on data acquisition, processing, and modelling to generate point clouds faithfully representing the buildings studied. The enrichment of models by the incorporation of temporal metadata allows the creation of various 3D model instances usable through augmented and virtual reality visualisation tools, offering immersive animations.