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What does VR meanJun 20, 2019 pm 05:49 PM
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Virtual Reality (VR), also known as spiritual realm technology, is a new practical technology developed in the 20th century. Virtual reality technology includes computers, electronic information, and simulation technologies. Its basic implementation method is to simulate a virtual environment with a computer to give people a sense of immersion in the environment.

What does VR mean

#With the continuous development of social productivity and science and technology, the demand for VR technology in all walks of life is increasingly strong. VR technology has also made great progress and gradually become a new field of science and technology. (Recommended learning: PHP video tutorial)

The so-called virtual reality, as the name suggests, is the combination of virtuality and reality. Theoretically, virtual reality technology (VR) is a computer simulation system that can create and experience a virtual world. It uses computers to generate a simulated environment and immerse users in the environment. Virtual reality technology uses real-life data and electronic signals generated by computer technology, and combines them with various output devices to transform them into phenomena that people can feel. These phenomena can be real objects in reality. , or it can be substances that we cannot see with the naked eye, expressed through three-dimensional models. Because these phenomena are not what we can directly see, but are the real world simulated through computer technology, they are called virtual reality.

Virtual reality technology has been recognized by more and more people. Users can experience the most realistic feeling in the virtual reality world. The authenticity of its simulated environment is difficult to distinguish between true and false in the real world, making it difficult to distinguish true from false. People have an immersive feeling; at the same time, virtual reality has all the perceptual functions that humans have, such as hearing, vision, touch, taste, smell and other perceptual systems; finally, it has a super simulation system, truly realizing Human-computer interaction allows people to operate at will and get the most realistic feedback from the environment during the operation process. It is the existence, multi-perception, interactivity and other characteristics of virtual reality technology that make it loved by many people.

VR involves many disciplines, a wide range of application fields, and various types of systems, which are determined by its research objects, research goals, and application requirements. From different perspectives, VR systems can be classified differently.

1. Classification based on the perspective of immersive experience

Immersive experience is divided into non-interactive experience, person-virtual environment interactive experience and group-virtual environment interactive experience. . This perspective emphasizes the interactive experience between the user and the device. In contrast, users in non-interactive experiences are more passive, and the content they experience is planned in advance. Even if the user is allowed to guide the scheduling of scene data to a certain extent, There is still no substantive interactive behavior, such as scene roaming, etc., and the user has almost nothing to do throughout the process; in the human-virtual environment interactive experience system, the user can use devices such as data gloves, digital scalpels, etc. By interacting, such as driving a fighter simulator, the user can perceive changes in the virtual environment, and in turn can have various feelings that may occur in the corresponding real world.

If the system is networked and multi-machine, so that multiple users can share a virtual environment, a group-virtual environment interactive experience system will be obtained, such as large-scale online interactive games, etc. At this time, VR The system is not very different from the real world.

2. Classification based on system function perspective

System functions are divided into planning and design, display and entertainment, training and drills, etc. The planning and design system can be used for experimental verification of new facilities, which can significantly shorten the research and development time, reduce design costs, and improve design efficiency. It can be used in urban drainage, community planning and other fields. For example, VR simulated water supply and drainage systems can significantly reduce the number of applications that were originally required. Funds for experimental verification; display entertainment systems are suitable for providing users with realistic viewing experiences, such as digital museums, large-scale 3D interactive games, film and television production, etc. For example, VR technology was used by Disney to shoot special effects movies as early as the 1970s; training Drill systems can be used in various hazardous environments and in areas where operating objects are difficult to obtain or where practical operation costs are extremely high, such as surgical training, space station maintenance training, etc.

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