From a technical point of view, the virtual reality system has three basic features: three "I" immersion-interacTIon-imaginaTIon (Immersion - Interaction - Conception), which emphasizes the leading role of people in the virtual system. From the past, people can only observe the results of processing from the outside of the computer system, and people can immerse themselves in the environment created by the computer system. From the past, people can only use single-dimensional digital information in the computing environment through the keyboard, mouse, and People can use a variety of sensors to interact with the environment of multidimensional information; from the past people can only inspire the results of quantitative calculations to deepen the understanding of things, to the possibility that people can integrate from qualitative and quantitative integration Get a sense of perception and rationality to deepen concepts and sprout new ideas. In short, in the future virtual system, people's goal is to make this information processing system composed of computers and other sensors try to "satisfy" people's needs.
Principles of VR immersion and interaction
Before, we watched a virtual creative content through a flat-panel display. 52VR last published an article "A picture lets you know VR", in which you will see a lot of virtual reality equipment 10 years ago. They are basically flat-panel displays, or project the resulting images onto an arc or even a spherical screen; or overlay the images of the left and right eyes on these screens to create a more solid effect.
Such devices are often very large and expensive.
In recent years, the VR head-mounted display developed has achieved better results: better immersion and cheaper price. At present, a set of mainstream VR glasses is less than 10,000 yuan.
What is the principle of this VR glasses to achieve better immersion?
We have seen that VR glasses mainly achieve immersion by three aspects:
Through the convex lens to enlarge the range of real-time images seen by the human eye, the current VR glasses will produce an image field of view in the range of 90-120 degrees, which is similar to the effect produced by a good three-channel ring-screen projection system, but VR glasses. To be closer to the human eye, the possibility of human eyes being disturbed is greatly reduced.
Through the gyroscope of the head, when the person turns the head, the gyroscope can notify the image generation engine in time to update the picture in time, so that people feel that they are looking at a surrounding virtual space, thereby generating 360 degrees. Three-dimensional sense of space.
The images seen at each moment of the left and right eyes are different. They are two different avatars that distinguish the left and right eye positions, resulting in a strong stereoscopic depth.
The above three reasons are the immersive characteristics and principles of VR glasses. I hope to help the designers. If you are interested, you can leave a message to Xiaobian. The small series will share more technical articles with you.
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