## 3 Results
### The AR Application
#### 3.1.2 Functionalities  
In accordance with Section 3 of the paper, the AR application includes multiple tools that serve two specific purposes: providing a visual comparison of the cultural heritage site during different time periods and offering highly detailed surveys with minimal motion sickness factors. This is achieved via a combination of highly detailed surveys for specific buildings/environments and low-detailed surveys for overall environment surveys. The highly detailed survey involves a laser scan of the \"Torretta Viscontea\", located in \"Parco di Monza\", Italy, with a level of detail of approximately 5 mm. This detailed survey provides a comprehensive representation of a specific building, capturing intricate details for an immersive and accurate AR experience. In addition, a lightweight survey utilizing the Google Maps workflow is employed to obtain an overall view of the entire \"Parco di Monza\" environment with minimal computational cost on the AR application. To facilitate interactive exploration of the cultural heritage site, four tools have been implemented in the AR application. The first tool enables switching between different models of the site during different time periods, allowing users to visually compare the site's appearance over time. The second tool allows activating or deactivating a high-fidelity  
Figure 4: AR application on the holographic table displaying “Torretta Viscontea”. model of the environment, providing users with control over the level of detail in the AR experience. The third tool is a map tool that visually overlays historical maps of the current environment/site, providing additional context and information. Lastly, a warp system has been implemented to enable easy switching between the models/objects to be visualized on the holographic table, enhancing the user's ability to interact with the AR environment and navigate between different elements of the cultural heritage site. Overall, the combination of highly detailed and lightweight surveys, along with the implementation of various tools, enhances the AR application's capabilities in providing an immersive, interactive, and informative exploration of the cultural heritage site with minimal motion sickness factors [23]. Timeline switch: This tool provides users with the ability to navigate the AR model of the cultural heritage site across different time periods. When utilized, the tool instantiates a different time period model in place, effectively substituting the current state of the site with the corresponding historical representation (Figure 5). This allows users to visually compare the site's appearance and characteristics during different epochs, thereby providing a dynamic and interactive exploration of its historical evolution. High-detail structures: Another implemented tool allows users to activate or deactivate a highly detailed structure within the environment. The tool was introduced to address the challenge of managing large-scale surveys (Figure 6) while maintaining a fluid and seamless user experience. By activating or deactivating the highly detailed structure on demand, users can control the level of detail they want to view in the AR environment, providing a balance between visual fidelity and performance and ensuring that the application remains responsive and fluid even when dealing with complex and data-intensive models. Map overlay: The AR application also includes a tool that enables users to overlay a historical map onto the cultural heritage site. The map overlay feature has been implemented via manipulation of the transparency of the map, allowing users to control the level of opacity by translating the input wand in the physical space (Figure 7). This intuitive interaction technique provides a natural and immersive way for users to adjust the transparency of the historical map, seamlessly blending the virtual and physical environments, and allowing users to visually compare the site with its historical map, thereby gaining insights into the site's historical context and evolution.