VR stands for virtual reality. It is a technology that allows a user to interact with a computer-simulated environment. Users can interact with the 3D world (i.e) when the user wears the VR headset they will feel like that there are inside another real world but it is actually a simulation.
VR headset is a head-mounted display (HMD), which displays a 3D world or images stitched to create a stimulus for the user. VR headset tracks the movements of our head and adjusts what we see based on where we look. So the virtual world seems to exist in all directions
The hand controller is used to deliver a fully immersive experience. Immersion is the perception that is physically present in the non-physical environment
The most common sensors used in the VR headset are magnetometer, accelerometer, and gyroscopes. A magnetometer is used to identify the position relative to the earth. An accelerometer is to detect three-dimensional movement. Gyroscopes are to find angular movement.
The device or system that gives users the power as pushing back or feelings and physical touch interaction is called haptic systems
The mechanism of tracking head movements forward, backward, sides and in all directions. A system called six degrees of freedom is used to track the head movements in x,y, and z-axis.
The process of digitizing our movement which is very important in the VR system. It can be done in two ways, one is an optical method and the other is a non-optical method. Virtual reality systems use base stations to track the sensors from the headset and controllers.
Foveation is a computational process for image rendering that mimics the way human vision works. Dynamic Foveated Rendering(DFR) employs eye-tracking to focus processing and bandwidth usage on areas of the images where high resolutions are required.
Fantastic applications of virtual reality
VR is used in the military for training the militants in a dangerous environment. In the air force, flight simulators are used to train the pilots. The simulators are set up to match a real aircraft. In navy virtual reality is in the form of a submarine simulator.
Education is another area where Virtual reality, plays a vital role in both learning and teaching.students can understand visual representation faster than theoretical explanation. Three-dimensional images of the human body by which students can explore more.
Virtual reality has been used to create historical sites that allow a user to experience it comfortably from home. We can also create a place desired by us. It is more like a dream come true.
VR now adopted in the various entertainment industries. In theatre, the head-mounted display is provided to the audience for each movie. The audience feels they are inside a real scenario especially in horror movies.
VR is being used as a powerful diagnostic tool which combines with other methods like MRI/CT scans to help the doctors diagnose accurately. It is used to treat mental illness aids, anxiety and panic attacks.
Best VR headsets in 2019
Good information is given in this article regarding the virtual reality and the VR headsets available in the market.
The technology has made it simpler to wear all sort of gadgets to enjoy the world of 3D videos just by wearing a headset on our forehead. It is agreed that there are immense uses of this technology in medical and educational areas. At the same time, there are apprehensions also regarding these technologies that they may be of addictive nature and children may get addicted to them for getting better gaming experience especially 3D effects and it may hamper their educational as well as physical growth if they remain glued to it during their productive academic life. So as we all know that scientific innovations and inventions have both the sides of the coin and we have to use them for betterment in life and not for falling in the addictive traps.
The other angle which is related to the health of the eyes is also an issue which comes on the forefront when we talk of these emerging technologies. Continuously wearing such gadgets on the forehead and using the eye in that palpated condition is to be examined from a medical point of view as it should not be doing any harm to our eyes in such enclosed conditions. So, in essence, we can use these gadgets, but in a judicious way.