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The complexity of archaeological sites hinders to get an integral modelling using the actual Geomatic techniques (i.e. aerial, closerangephotogrammetry and terrestrial laser scanner) individually, so a multi-sensor approach is proposed as the best solution toprovide a 3D reconstruction and visualization of these complex sites. Sensor registration represents a riveting milestone whenautomation is required and when aerial and terrestrial dataset must be integrated. To this end, several problems must be solved:coordinate system definition, geo-referencing, co-registration of point clouds, geometric and radiometric homogeneity, etc. Last butnot least, safeguarding of tangible archaeological heritage and its associated intangible expressions entails a multi-source dataapproach in which heterogeneous material (historical documents, drawings, archaeological techniques, habit of living, etc.) shouldbe collected and combined with the resulting hybrid 3D of “Tolmo de Minateda” located models. The proposed multi-data sourceand multi-sensor approach is applied to the study case of “Tolmo de Minateda” archaeological site. A total extension of 9 ha isreconstructed, with an adapted level of detail, by an ultralight aerial platform (paratrike), an unmanned aerial vehicle, a terrestriallaser scanner and terrestrial photogrammetry. In addition, the own defensive nature of the site (i.e. with the presence of threedifferent defensive walls) together with the considerable stratification of the archaeological site (i.e. with different archaeologicalsurfaces and constructive typologies) require that tangible and intangible archaeological heritage expressions can be integrated withthe hybrid 3D models obtained, to analyse, understand and exploit the archaeological site by different experts and heritagestakeholders

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

A MULTI-DATA SOURCE AND MULTI-SENSOR APPROACH FOR THE 3D RECONSTRUCTION AND VISUALIZATION OF A COMPLEX ARCHAELOGICAL SITE: THE CASE STUDY OF TOLMO DE MINATEDA