Virtual reality (VR) is one of the highest levels of multimedia application to this day. It is a bundle of all types of technology which includes:
- Computer graphics
- Computer technology
- Computer vision
- Human-machine interface technology
- Human T smart technology
- Microelectronics technology
- Network technology
- Sensing and measurement technology
- Simulation technology
- Speech recognition
- Stereo display technology
- Synthesis technology
- Visual psychology
- Visual physiology
- And other high-tech integration
Its fidelity and real-time interactivity provide powerful support for system simulation technology. In this article, we will be discussing the 3I characteristic of VR technology: immersion, interaction and imagination.
Immersion is also known as presence, refers to the degree of reality that the viewer exists in the virtual environment as the protagonist. Viewers can put themselves in a virtual environment and become a part of the virtual environment by wearing interactive devices such as helmet-mounted displays and data gloves. The interaction between the viewer and various objects in the virtual environment makes the viewer feel like they are just like in the real world. The viewers’ brain tricks themselves with what they are seeing and hearing from the VR head-mounted displays or a VR headset giving them an immersion feeling and thinking that what they are experiencing feels real. Experience it yourself from one of our case studies created by our educators and students themselves. If you have a cardboard goggle or a VR head-mounted displays, for some viewing instructions check our viewing guide. Open the URL of the VR project, pop your phone into the head-mounted displays and experience being immersed in a virtual environment.
Interaction refers to the user’s degree of manoeuvrability of objects in the simulated environment and the natural degree of feedback from the real environment. The human-computer interaction in VR technology is natural-like interaction. Viewers can not only interact with the computer keyboard and mouse but also through a proper head-mounted displays, data gloves and other sensing devices. The computer can adjust the images and audios presented by the system according to the movement of the viewer’s head, hands, eyes, language and body. Viewers can inspect or manipulate objects in the virtual environment through natural skills such as their own language, body movements or actions.
Since the VR system is equipped with sensing and responsive devices for sight, hearing, touch, and kinesthetics, viewers can obtain various perceptions such as vision, hearing, touch, and kinaesthesia through human-computer interaction in the virtual environment to achieve an immersive experience. The research and development of VR are to expand human cognition and perception capabilities and establish a harmonious human-machine environment. VR technology is a perfect combination of human and technology that is a product of computer graphics and human-computer interaction technology. Humans occupy a very important position in the entire system. Using the means of VR technology, we can get an “immersive” experience of the research object and environment, thereby enhancing the breadth and depth of human cognition, and broadening the “cognition space” and “method space” for humans to understand the objective world. Ultimately achieve a more essential reflection the essence of the objective world.
Immersive VR System
The immersive VR system uses various interactive devices such as head-mounted displays and data gloves to seal the viewer’s vision, hearing and other senses and use interactive devices to operate and control the virtual environment so the viewer truly becomes a participant in the VR system creating a sense of being immersed and fully engaged.
There are 2 features of the immersive VR systems: High degree of immersion, the immersive VR system uses a variety of input and output devices to create a virtual world and allowing the viewer to immerse in it. At the same time, it can completely isolate the viewer without being affected by the real outside world; Highly real-time, viewers can achieve a parallel response from the real world into the virtual world. For example, when a person moves while wearing the gear and installed sensors in a room, the spatial location tracking device from the sensors detects the movements in time, calculating it through the computer system, then outputs the corresponding scene changes in the virtual screen for the viewer to see. This change must be fast and accurately timed for the best experience on the flip side is that there will still be a slight time delay from processing all the information in the system.
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