4,770 research outputs found
A Synergistic Approach for Recovering Occlusion-Free Textured 3D Maps of Urban Facades from Heterogeneous Cartographic Data
In this paper we present a practical approach for generating an
occlusion-free textured 3D map of urban facades by the synergistic use of
terrestrial images, 3D point clouds and area-based information. Particularly in
dense urban environments, the high presence of urban objects in front of the
facades causes significant difficulties for several stages in computational
building modeling. Major challenges lie on the one hand in extracting complete
3D facade quadrilateral delimitations and on the other hand in generating
occlusion-free facade textures. For these reasons, we describe a
straightforward approach for completing and recovering facade geometry and
textures by exploiting the data complementarity of terrestrial multi-source
imagery and area-based information
Progetti per la cittĂ compatta. Il caso di San Salvario a Torino
La presente ricerca nasce da una duplice esigenza. La prima, che esprime una necessità contingente, è quella legata ad un caso studio specifico, la riqualificazione e trasformazione del quartiere San Salvario a Torino. Un settore di ampliamento urbano costituito da una maglia ortogonale di isolati edificati tra la fine dell'Ottocento e la prima metà del Novecento, che presentano una struttura a tratti discontinua a causa di parcelle mai edificate o distrutte durante la seconda guerra mondiale e che per incuria o indecisioni urbanistiche sono rimaste irrisolte. La seconda, che esprime un'idea permanente, è il concetto di continuità della città della storia e costituisce occasione per una riflessione sul tema del quartiere e dell'isolato urbano attraverso il progetto contemporaneo. La ricerca ha come obiettivo generale quello di confermare il ruolo della città compatta come principio insediativo di grande valore culturale e sociale e di dimostrarne la validità anche in termini di sostenibilità ambientale attraverso progetti che si inseriscono nel tessuto costruito a completamento e trasformazione della struttura esistent
Interactive Facades Analysis and Synthesis of Semi-Regular Facades
Urban facades regularly contain interesting variations due to allowed deformations of repeated elements (e.g., windows in different open or close positions) posing challenges to state-of-the-art facade analysis algorithms. We propose a semi-automatic framework to recover both repetition patterns of the elements and their individual deformation parameters to produce a factored facade representation. Such a representation enables a range of applications including interactive facade images, improved multi-view stereo reconstruction, facade-level change detection, and novel image editing possibilities
Recovering occlusion-free textured 3D maps of urban facades by a synergistic use of terrestrial images, 3D point clouds and area-based information
In this paper we present a practical approach for generating an occlusion-free textured 3D map of urban facades by the synergistic
use of terrestrial images, 3D point clouds and area-based information. Particularly in dense urban environments, the high presence
of urban objects in front of the facades causes significant difficulties for several stages in computational building modeling. Major
challenges lie on the one hand in extracting complete 3D facade quadrilateral delimitations and on the other hand in generating
occlusion-free facade textures. For these reasons, we describe a straightforward approach for completing and recovering facade
geometry and textures by exploiting the data complementarity of terrestrial multi-source imagery and area-based information
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