# Efficacy of Virtual Reality in Painting Art Exhibitions Appreciation
## 1 Introduction
### Application of VR  
Virtual reality (VR) creates a three-dimensional virtual world using computer simulation to simulate visual, aural, and tactile senses such that the users feel as if they are in the real world. VR has revolutionized users' operation by freeing them from instructions and programmed-order models and enabling them to communicate with the system more directly. VR is immersive, interactive,and imaginative. The \"immersive\" feature allows users to integrate themselves into the virtual context and feel as if they are in another world by escaping temporarily from the real world, the \"interactive\" feature enables users to react even when they touch things in the virtual world; the \"imaginative\" feature is one by which an imaginary world simulates the real one, with great room for imagination [2].  
Many scholars believe that VR has significant potential to improve people's ability to study [3; 4; 5; 6; 7]. Apart from education, VR has been applied to many other fields such as psychological research [8], rehabilitation [9], marketing [10], nursing [11], and cultural heritage [12; 13; 14]. VR is frequently used in work environment simulation for skill training or for the evaluation of psychological and physiological responses of users. [PERSON] et al. [15] used a VR system to evaluate the emotional states, cognitive workload, and task performance of subjects while performing air traffic control tasks of various difficulties. [PERSON] et al. [16] developed a VR powered wheelchair simulator to train and assess the abilities of users to operate vehicles in a controlled and safe manner. [PERSON] et al. [17] created a new pedestrian simulator using VR and confirmed that the simulator is a valid method for capturing pedestrian behavior in a crosswalk scenario. A VR surgery simulation system can provide surgery training to interns or inexperienced doctors, so that, when operating this system, these doctors can feel as if they are performing a real surgery, which helps reduce the risk of errors in future real surgeries [18]. In the field of cultural heritage, due to the progress of computer technology, it is now possible to use reverse engineering to construct and store cultural relics, buildings, and monuments in 3D data, and then, analyze, investigate, preserve, and restore them aided by computer imaging technology [14; 19]. [PERSON] et al. [12] used a projector-based display and a Kinect sensor to allow users to interact with virtual scenes through motion-sensing aimed at experiencing a virtual reconstruction of the Etruscan [PERSON] tomb. [PERSON] et al. [14] used photogrammetry to acquire the 3D data of ancient Egyptian artefacts--a wooden sarcophagus and heart scarab--and modelled them for VR visualization. Moreover, the study combined optical and inertial tracking methods to obtain robust pose tracking performance, which allowed users to interact with the displayed virtual scenes through simple hand movements, such as grabbing. [PERSON] et al. [20] presented an immersive VR system about Castro culture that allows users to physically walk. The system uses a hybrid interface combining a wireless pointing device and inertial and acoustic tracking sensors to determine the user's pose, and to allow users to interact with the displayed virtual environment by physically walking in the digital space. [PERSON] et al. [13] investigated the visitors' visiting experience of the Dunhuang cultural relics VR exhibition, and found that the application of VR to a cultural relics display has strong appeal to younger audiences, creates new experiences for audiences, stimulates their learning interest, satisfies their curiosity, and keeps them engaged during their visit.