# Participatory Exhibition-Viewing Using Augmented Reality and Analysis of Visitor Behavior
## 3 Methodology
### Establishment of AR Exhibition-Viewing System
#### 3.1.1 Frame Scanning and Positioning  
In this project, frame scanning served two functions: AR positioning and the presentation of exhibition content.  
1. AR positioning  
The exhibition space consisted of three walls with the following dimensions (see Figure 1): 3.05 m wide, 3.08 m deep, and 2.65 m high. All of the walls were painted white, which is not conducive to spatial positioning or general AR recognition. We, therefore, had the app prompt the user to scan frames on the first wall to aid with positioning quality (see Figure 2). The recognition images we placed in the frames matched the visual aesthetics of the overall exhibition. There were only simple text introductions of the centers on each physical wall and no other images. This was designed to add a sense of novelty and mystery for the visitors.  
This was meant to highlight the contrast between traditional exhibition labels and the enriched, interactive digital content provided through our AR application. In conventional settings, visitor engagement with the artwork is often limited to passive reading. Our  
Figure 1: Exhibition space and dimensions.  
system transforms this dynamic by offering a more engaging, interactive way to learn about the art, utilizing AR to provide detailed digital overlays that enhance the physical exhibits. This approach not only enriches the visitor experience but also encourages a more active exploration of the exhibition space, demonstrating the added value of integrating AR technology into cultural exhibitions.  
We adopted Unity's AR Foundation technology, which uses image recognition to perform AR positioning, and the SLAM technology of ARCore 1.38 and ARKit 6 to perform continuous positioning. Users, thus, only had to scan any one of the three walls using their AR lens to construct the entire virtual space, which overlaid photos and videos of the achievements of each center into the frames on the walls. Users could scan the frames on the other walls and the app would maintain the created AR space but place the origin on the newly scanned wall. This seamless recalibration ensured that the AR virtual objects remained in their correct locations (Figure 3).  
(2) Presentation of exhibition content  
The main purpose of the exhibit was to display the achievements of the following five centers of the Yo-Chang Art Museum of the National Taiwan University of Arts: Research Center for Historic Object Conservation, Innovation Center for Art and Technology, Research Center for Sound Art and Acoustics, Center for Physical Arts Experimentation, and Research Center for Intangible Cultural Heritage. There was a large amount of content  
Figure 3: Schematic of AR image recognition and SLAM technology integration for virtual–physical space positioning.  
Figure 2: Frame scanning for positioning.  
to display, so using AR technology allowed us to overcome the physical limitations of the space, as well as to add a sense of mystery to the exhibits. The exhibit's theme of \"Wander Into Our Sea\" was also supported by the immersive environment created by the AR technology.