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Researchers with the European Space Agency in Darmstadt, Germany, equipped with a HTC Vive VR headset and motion controllers, demonstrates how astronauts might use virtual reality in the future to train to extinguish a fire inside a lunar habitat Virtual reality (VR) is a simulated experience that can be similar to or completely different from the real world. Other, distinct types of VR style technology include augmented reality and mixed reality.
Applications of virtual reality can include entertainment (i.e. Currently standard virtual reality systems use either virtual reality headsets or multi-projected environments to generate realistic images, sounds and other sensations that simulate a user's physical presence in a virtual environment.
A head-mounted display (HMD) more fully immerses the user in a virtual world.
A virtual reality headset typically includes two small high resolution OLED or LCD monitors which provide separate images for each eye for stereoscopic graphics rendering a 3D virtual world, a binaural audio system, positional and rotational real-time head tracking for six degrees of movement.
Many modern first-person video games can be used as an example, using various triggers, responsive characters, and other such interactive devices to make the user feel as though they are in a virtual world.
A common criticism of this form of immersion is that there is no sense of peripheral vision, limiting the user's ability to know what is happening around them.In projector-based virtual reality, modeling of the real environment plays a vital role in various virtual reality applications, such as robot navigation, construction modeling, and airplane simulation.Image-based virtual reality systems have been gaining popularity in computer graphics and computer vision communities.Mixed reality (MR) is the merging of the real world and virtual worlds to produce new environments and visualizations where physical and digital objects co-exist and interact in real time. Simulated reality is a hypothetical virtual reality as truly immersive as the actual reality, enabling an advanced lifelike experience or even virtual eternity.It is most likely to be produced using a brain–computer interface and quantum computing.Other elements of virtual reality appeared as early as the 1860s.Antonin Artaud took the view that illusion was not distinct from reality, advocating that spectators at a play should suspend disbelief and regard the drama on stage as reality.The term "virtual reality" was first used in a science fiction context in The Judas Mandala, a 1982 novel by Damien Broderick.One method by which virtual reality can be realized is simulation-based virtual reality.The spectator is given a complete sensation of reality, i.e.moving three dimensional images which may be in colour, with 100% peripheral vision, binaural sound, scents and air breezes." In 1968, Ivan Sutherland, with the help of his students including Bob Sproull, created what was widely considered to be the first head-mounted display system for use in immersive simulation applications.