Introduction
The advent of Metaverse technologies, encompassing Virtual Reality (VR), Augmented Reality (AR), Mixed Reality (MR), and Extended Reality (XR), marks a transformative era in digital interaction. These technologies are not just an evolution of current digital interfaces; they represent a fundamental shift in how humans perceive, interact with, and experience digital environments. At the heart of this transformation lies Human-Computer Interaction (HCI), a critical discipline that ensures these immersive technologies are intuitive, accessible, and effective for users.
The term "Metaverse" refers to a collective virtual shared space, created by the convergence of virtually enhanced physical reality and physically persistent virtual spaces. This fusion blurs the boundaries between the real and digital worlds, enabling users to engage in a fully immersive experience that combines visual, auditory, and haptic feedback. In such environments, the role of HCI becomes paramount as it bridges the gap between human cognitive and sensory capabilities and the complex technological frameworks that underpin these experiences.
One of the primary reasons HCI is crucial in Metaverse technologies is the need to create user-friendly interfaces that accommodate a wide range of user abilities and preferences. VR, AR, MR, and XR environments often involve complex interactions that go beyond traditional screen-based interfaces, requiring users to navigate three-dimensional spaces, manipulate virtual objects, and interact with both digital and physical elements simultaneously. Without well-designed HCI principles, users may struggle to adapt to these new forms of interaction, leading to frustration, disorientation, and ultimately, a rejection of the technology.
Effective HCI design in the Metaverse ensures that users can interact with digital environments in a way that feels natural and intuitive. This involves not only designing for usability but also considering the psychological and physiological effects of prolonged exposure to immersive environments. For example, VR can induce motion sickness in some users due to the disconnect between visual stimuli and physical sensations. HCI plays a critical role in mitigating such issues by developing interfaces and interaction techniques that reduce cognitive load and align with human perceptual and motor systems.
In AR and MR, where digital content is overlaid onto the real world, the challenge of integrating virtual elements seamlessly into the user's perception of their environment is significant. HCI is essential in ensuring that these virtual elements are contextually appropriate, non-intrusive, and enhance rather than detract from the user's experience. This includes everything from the placement and interaction of virtual objects in a real-world setting to the responsiveness and accuracy of these objects as the user moves and interacts with their environment.
Moreover, the Metaverse aims to be a social space where users can interact with each other in real-time, regardless of physical location. HCI research is vital in developing the frameworks for these interactions, ensuring that they are as natural and meaningful as possible. This involves not only the technical aspects of creating realistic avatars and environments but also understanding the social dynamics that occur within these spaces. By studying how users communicate, collaborate, and build relationships in the Metaverse, HCI can help design systems that support positive social interactions and community building.
Another critical aspect of HCI in the context of Metaverse technologies is accessibility. As these technologies become more widespread, it is essential to ensure that they are accessible to as many people as possible, including those with disabilities. This involves designing interfaces that accommodate different sensory and motor abilities, providing alternative input methods, and ensuring that virtual environments are navigable and usable by all.
HCI also plays a role in promoting inclusivity within the Metaverse. This includes addressing issues of representation within virtual environments, ensuring that all users can see themselves reflected in the avatars and experiences available to them. By designing for diversity from the outset, HCI can help create a Metaverse that is welcoming and empowering for all users, regardless of their background or abilities.
The rapid evolution of Metaverse technologies also presents an opportunity for innovation in interaction techniques. HCI researchers are at the forefront of exploring new ways for users to interact with digital content, moving beyond traditional mouse-and-keyboard or touch-based interfaces to more immersive and intuitive methods. This includes the development of gesture-based controls, eye-tracking, voice recognition, and even brain-computer interfaces that allow users to interact with virtual environments using only their thoughts.
These innovations have the potential to revolutionize not only how we interact with the Metaverse but also how we interact with technology in general. As these interaction techniques become more refined, they could lead to new forms of digital interaction that are more natural, efficient, and satisfying than anything currently available.
Finally, the integration of HCI in Metaverse technologies is essential for addressing the ethical and privacy concerns that arise from these new forms of interaction. The Metaverse involves collecting and processing vast amounts of personal data, including biometric information such as eye movements, gestures, and even brain activity. HCI professionals must consider how this data is collected, stored, and used, ensuring that users' privacy is protected and that they are fully informed about how their data is being used.
Moreover, as the Metaverse becomes a more significant part of people's lives, issues related to addiction, mental health, and digital well-being will become increasingly important. HCI can help address these issues by designing systems that promote healthy interactions, provide users with control over their digital environments, and offer tools for managing their engagement with the Metaverse.
In conclusion, Human-Computer Interaction is a fundamental component in the development and success of Metaverse technologies. As VR, AR, MR, and XR continue to evolve, the role of HCI will be critical in ensuring that these technologies are accessible, intuitive, and beneficial for all users. By focusing on user experience, seamless integration, accessibility, innovation, and ethical considerations, HCI will help shape a Metaverse that is not only technologically advanced but also human-centered.
Analysis of the virtual reality user experience improvement through human vision adjustment using diopter dial
Head-mounted display (HMD) form factor is an essential element that influences the different emotions users experience during their virtual reality (VR) experience. In particular, it has been announced that the VR experience highly depends on the user’s field of vision because it blocks the user’s view of the real world and transfers information only in the virtual world. Users with eye diseases wore vision aids to experience VR environments or used them without sufficient vision. Furthermore, this problem led to factors that reduced the user’s sense of immersion and ease of use. In this paper, we analyzed how providing users with adjusted human vision via diopter dial affects the improvement of VR user experiences. The experimental procedure consisted of 2D video and 360-degree video as audiovisual content, and sitting mode game and room-scale mode game as playable content. We measured the immersion and sickness of the experimental environment using each verified questionnaire on the 5-point Likert scale and the discomfort score for each experimental content to measure the degree of discomfort. The experimental environment is Phase 1, where users experience VR while wearing vision aids, and Phase 2, where users experience VR with human vision adjustment using a diopter dial without vision aids. The difference between the evaluation results of both experimental environments was 1.56 for immersion, 2.35 for sickness, and 3.85 for discomfort. Additionally, user feedback was collected through in-depth interviews to complement the reliability of the statistical analysis. Through these results, we confirmed that human vision adjustment using the diopter dial provides users with an improved form factor, reduces discomfort and sickness, and improves the immersive feeling of the VR environment through improved display visibility.