Abstract
Abstract. Augmented Reality (AR) represents a growing communication channel, responding to the need to expand reality with additional information, offering easy and engaging access to digital data. AR for architectural representation allows a simple interaction with 3D models, facilitating spatial understanding of complex volumes and topological relationships between parts, overcoming some limitations related to Virtual Reality. In the last decade different developments in the pipeline process have seen a significant advancement in technological and algorithmic aspects, paying less attention to 3D modeling generation. For this, the article explores the construction of basic geometries for 3D model’s generation, highlighting the relationship between geometry and topology, basic for a consistent normal distribution. Moreover, a critical evaluation about corrective paths of existing 3D models is presented, analysing a complex architectural case study, the virtual model of Villa del Verginese, an emblematic example for topological emerged problems. The final aim of the paper is to refocus attention on 3D model construction, suggesting some "good practices" useful for preventing, minimizing or correcting topological problems, extending the accessibility of AR to people engaged in architectural representation.
Highlights
The growing demand for increasing knowledge about environments is leading to a deep transformation on data transmission
Augmented Reality (AR) for architectural representation allows a simple interaction with 3D models, facilitating spatial understanding of complex forms and topological relationship between parts
From the geometrical analysis the variables that help define the orientation of the normal of parametric surfaces are difficult to control during the creation phase
Summary
The growing demand for increasing knowledge about environments is leading to a deep transformation on data transmission. Within this technological and cultural revolution, Augmented Reality (AR) plays an important role This method applied to architecture allows to associate multilevel descriptive information with representations of any artefact or environment, enlarging the knowledge that user can get from the existing simple observation. The generation of simple solid or surface parametric models (Baglioni, 2008) and native polygonal models requires less control because normal directionality is often correctly calculated in relation with the global model shape The problem, both geometrical and methodological, arises for all those complex reconstructive 3D models based on mathematical open surfaces, for which is often required to face a long manually normal correction to obtain a consistent normal orientation, reaching an accurate AR definition (Barlozzini et al, 2018). The final aim of the article is to analyse this topic, suggesting some general “good practices” both in geometry construction and modification, in order to obtain consistent normal distribution, focusing the attention on 3D content creation for Architecture AR, encouraging its use even by the less experienced user
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
