What are the major categories of virtual reality?
Skills should not only refer to people wearing helmets and gloves, but should also include all relevant skills and methods acquired through natural simulations and real-world experience.Its fundamental purpose is to realize the real world experience and human-computer interaction based on natural technology. The system that can achieve or partially achieve this goal is called virtual reality system.1. Desktop VIRTUAL Reality Desktop virtual reality uses personal computers and low-level workstations to simulate and uses the computer screen as a window through which users can view the virtual realm.Fully interact with the virtual reality world through various input devices such as mouse, trackball, moment ball, etc.Participants need to use the input device through the computer screen to see 360 – degree virtual area and operation of the object, but participants are still immersed in the surrounding reality, the lack of a fully immersive, because it is the greatest characteristic of desktop virtual reality is the lack of real world experience, but is widely used due to the relatively low cost.Common desktop virtual reality technologies include QuickTime VR based on static images, VRML, DESKTOP 3D virtual reality and MUD.Immersive VIRTUAL Reality Advanced virtual reality systems provide a fully immersive experience that allows users to feel as if they are in a virtual world.Use head-mounted displays or other devices to surround participants’ visual, auditory, and other senses to provide new virtual sensory Spaces, including: location trackers, data gloves, and other hand-controlled input devices;Sound and so on create a sense of immersion, immersion and immersion in the participants.Common immersive systems include headmounted display based systems, project-based virtual reality systems and remote presentation systems.Virtual reality is the use of virtual reality technology to simulate the real world, not only to simulate the real world, but also to enhance the experience of the participant’s emotions that are not recognized or uncomfortable in the real environment, namely augmented reality.A typical example is the fighter pilot’s head-up display, which projects instrument bank readings and weapon target data onto a straight-through screen mounted in front of the pilot so that the pilot does not have to look down to read the data in the cockpit instrument bank.Enemy aircraft or navigation deviations allowed him to focus his sights.4. Distributed virtual Reality Virtual reality has been promoted to a higher level, namely distributed virtual reality system, where multiple users are connected by computer network and join virtual space at the same time to experience virtual experience together.In distributed virtual reality system, multiple users can view and operate the same virtual world through the network to achieve the purpose of cooperation.At present, the most representative distributed virtual reality system is SIMNET, which is connected to the tank simulator through the network for joint military training.SIMNET allows the German simulator to operate in the same virtual world as the American simulator and participate in the same combat training.