The most common means of immersion in virtual reality are specialized helmets/glasses. The screen in front of the user’s eyes displays video in 3D. Attached to the body, a gyroscope and accelerometer track head movements and transmit data to a computing system, which changes the image on the display depending on the readings of the sensors. As a result, the user has the opportunity to “look around” inside virtual reality and feel like in the real world.
For a more realistic immersion in the world of virtual reality, in addition to sensors that track the position of the head, VR devices can use tracking systems that track the movements of the pupils of the eyes and allow you to determine where a person is looking at each moment, as well as track human body movements to repeat them in virtual the world. Such tracking can be carried out using special sensors or a video camera.
VR devices and components
It is believed that 80% of the information a person receives through sight. Therefore, the developers of VR systems pay great attention to the devices that provide imaging. As a rule, they are supplemented with stereo sound devices; work is underway on tactile influences and even imitation of smells. No effect on taste buds has been reported yet.
Virtual reality helmet
Modern virtual reality helmets (HMD-display, head-mounted display, video helmet) contain one or more displays that display images for the left and right eyes, a lens system for adjusting the image geometry, and a tracking system that tracks the orientation of the device in space. In appearance, they now look like glasses, which is why they are increasingly called VR headsets (VR headsets) or simply virtual reality glasses. They can be divided into three groups:
A modern smartphone is a high-performance device capable of independently processing 3D images. Smartphone displays have a fairly high resolution. Almost every smartphone is equipped with sensors that allow you to determine the position of the device in space.
Glasses in which the image processing is provided by an external device (PC, Xbox, PlayStation, etc.). The external device must have high performance, and the glasses must be equipped with position sensors.
Helmets are the main component of fully immersive VR, as they not only provide 3D imaging and stereo sound but also partially isolate the user from the surrounding reality.
Virtual reality is a world created by technical means, transmitted to a person through his sensations: sight, hearing, touch, and others. Virtual reality simulates both exposure and responses to exposure. To create a convincing complex of sensations of reality, computer synthesis of properties and reactions of virtual reality is performed in real-time.