Chimera: A Bim+gis System for Cultural Heritage

Abstract

Abstract. In the last years, many researches are conducted on systems for Cultural Heritage, trying to adapt BIM systems to CH needs; furthermore, the interest around the integration of BIM systems and GIS systems spreads. Chimera, presented in this paper, is the final product of about 8 years of research on this broad topic and has been specifically conceived for the realm of CH. It joins the small group of ready-to work information systems that allow the concurrently use of different integrated data, as 3D models, point clouds but also 2D maps or images. It also presents different functionalities that allow to work at a multiscale approach, including switching from a “single object level”, to the a “building level” with a BIM-style system, to a more extensive “environmental level” GIS-style information system and giving the possibility to manage transversal information and to analyse each case from different point of views and at different level of detail.

Towards Master Data Management for Cultural Heritage: The Sacri Monti Web Platform

“…A new version is when an object is also modified physically, which implies a change in its 3D representation. A subversion is a modification only related to the information connected to the object or the physical modification of the asset without new models to represent it (Achille et al, 2019;Rechichi, 2020).…”

“…In the case of reality-based modelling, this operation can be considerably time-consuming and requires an interpretation phase for the most challenging shapes, which might introduce differences and errors from the data source (Achille et al, 2019). In 2019 the platform was updated into a new version, Chimera (Bruno et al, 2020;Rechichi, 2020), that adopted a new multi-scalar BIM+GIS approach particularly suitable to the Sacri Monti case study.…”

“…Moreover, the floating window feature was implemented, allowing users to freely arrange panels inside the browser window. The rendering performance are significant, thanks to the use of seven graphical LOD that are automatically computed by the system on the loading phase, and to the implemented caching mechanism (Rechichi, 2020). Chimera combined the BIM and GIS tools as two different ways to access a unique repository of information, as it is required in the Cultural Heritage cases that need to be managed at different levels, combining a specific approach to the single architectural element to the general management of the asset as a whole.…”

Integration of Historical Gis Data in a Hbim System

“…The admins of the project should be able to choose which tables are visible for each category (Objects, Versions, Sub-versions, Models and Interventions). A thorough description of the technical implementation and an in-depth description of specific functions of Chimera can be found in (Rechichi, 2020).…”

Analysis of the Possibilities of Using HBIM Technology in the Protection of Cultural Heritage, Based on a Review of the Latest Research Carried out in Poland

“…Many researchers propose interesting approaches to the issue of preserving cultural heritage and carry out analyses with the use of computer aided processes, including Rechini [18], who emphasizes the integration of BIM and GIS systems in research and studies. Chimera is the result of research, and it was created with cultural heritage in mind; this IT system allows the use of integrated data, e.g., 3D model, 2D maps, images, allows for further work in a large-scale approach.…”