Since 1996 several monuments of Ravenna’s historical centre have been registered as UNESCO sites due to the outstanding value of their mosaic art pieces, as well as the peculiar architectural features in baptisteries, churches, mausoleums: they provide crucial evidence showing the transition from Ancient Roman typologies to Late Antiquity buildings. By testing the interaction between the 3d mapping technologies and the applications the entertainment, this paper will explain the results of an interdisciplinary research project and its future potential, by illustrating the methodology used to obtain reliable and multipurpose 3D models. The creation of a mapping database is the central purpose of the operations carried out on captured data and such material is suitable for both the interactive exploration using 3D devices such as Oculus VR as well as for an accurate documentation of the state of conservation of relevant ancient buildings in Ravenna. More specific technical points deal with fully exploiting image-based modelling tools based on Structure from Motion (SfM) algorithms and render-to-texture solutions (baking in CG applications). In this context, the typical automatic solutions implemented in the latest generation of photogrammetric software play a very important role since they avoid time-consuming manual parameterization within the entertainment applications. On the other hand, other problems concerning the full employment of 3D data from active and passive sensors will be shown: the field of this methodology is called BRDF, and in particular splitting apparent colour textures (from passive sensors) into a set of images providing the render engine with more accurate and specific information to achieve higher photo-realism.
Cipriani, L., Fantini, F. (2015). Ravenna’s Archaeological Heritage. Integration of techniques for accurate documentation through 3D digital models. Vienna : Museen der Stadt Wien – Stadtarchäologie.
Ravenna’s Archaeological Heritage. Integration of techniques for accurate documentation through 3D digital models
CIPRIANI, LUCA;FANTINI, FILIPPO
2015
Abstract
Since 1996 several monuments of Ravenna’s historical centre have been registered as UNESCO sites due to the outstanding value of their mosaic art pieces, as well as the peculiar architectural features in baptisteries, churches, mausoleums: they provide crucial evidence showing the transition from Ancient Roman typologies to Late Antiquity buildings. By testing the interaction between the 3d mapping technologies and the applications the entertainment, this paper will explain the results of an interdisciplinary research project and its future potential, by illustrating the methodology used to obtain reliable and multipurpose 3D models. The creation of a mapping database is the central purpose of the operations carried out on captured data and such material is suitable for both the interactive exploration using 3D devices such as Oculus VR as well as for an accurate documentation of the state of conservation of relevant ancient buildings in Ravenna. More specific technical points deal with fully exploiting image-based modelling tools based on Structure from Motion (SfM) algorithms and render-to-texture solutions (baking in CG applications). In this context, the typical automatic solutions implemented in the latest generation of photogrammetric software play a very important role since they avoid time-consuming manual parameterization within the entertainment applications. On the other hand, other problems concerning the full employment of 3D data from active and passive sensors will be shown: the field of this methodology is called BRDF, and in particular splitting apparent colour textures (from passive sensors) into a set of images providing the render engine with more accurate and specific information to achieve higher photo-realism.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
