Vr basic knowledge of popular science

enter since 2016, increasing heat, VR market everyone guessing whether this marks the prelude to VR time really want to come? For the answer to this question, we as an ordinary consumer, nature can't make a clear judgment. However, knowledge about VR should be more or less.

what VR?

VR for Virtual Reality, Virtual Reality in Chinese translation. The original refer to immersive multimedia experience or computer simulation of reality, refers to real or imagined by computer generated environment simulated users physical feedback and interaction, the earliest is widely used in military field.

this is the first year of VR?

VR concept is not new. In fact any computer hardware and software system based on simulation of reality belong to VR, such as space, nuclear explosion simulation. Call in 2016 for the first year of VR, because can provide 6 degree of freedom 3D immersive visual display of display devices, accurate positioning the body movement and realize the natural language interaction of hardware and software support basic implementation at this stage the application of mature and reliable. Say simply, at this stage, your vision, hearing, motion perception basically achieved virtual interactions.

about VR professional term, do you know how many?

in the next few VR common terms, will make you feel both strange and familiar with again?

1 head tracking

refers to the sensor, the sensor can track the user's head movements, according to the recorded data moving images of the screening, make it can match with the position of the head. But note that some VR head is not the head tracking. Eye tracking

2

is similar to the head tracking and rendered images match the user in the direction of the eye sees. For example, there is a virtual reality show use of eye tracking technology, the user can through the eyes in different directions aimed weapon.

3 viewing angles

view of degree Angle, viewing Angle, the greater the user in the more immersive VR experience. Delay

4

in simple terms, when you wear the VR head show, hair move, not kept up with, you can see the screen content that is delayed. The image of the delay can lead to the user experience to the uncomfortable feeling.

5 motion sickness disease

some people you put on VR head after, feel dizzy and sick, this is dizzy movement disorder. This is do not match the information processing by the brain and body. For example, your eyes see the picture is moving, so the glasses to tell the brain you move in, and to receive the information of other sports receptors in the brain is, now you are stationary. So, you will feel dizziness, nausea. But everyone's constitution is different, not all people can produce motion sickness. 6 the refresh rate

refresh rate refers to the speed of image, this is largely determines the stand or fall of VR experience. Because of high refresh rate reduces delay, which in turn reduce the onset of motion sickness, also means that the user will get more sensitive experience. Now require VR display refresh rate in at least 60 frames per second, can ensure that use experience. However. Some equipment has reached 120 frames per second.

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