How does virtual reality (VR) work?

Today, I learned a basic of how VR works and want to share you my short summary:

  • VR feel can be achieved by using head mounted displays to show different 2D pictures (different angles, depth) to each of a user' eyes to immerse the feeling of staying in a 3D world to the user. The immersion can be increased by increasing the field of view (typical field of view is 100 to 110 degree). 
  • FPS requires at least 60fps for the user to feel okay.
  • Different trackings such as head tracking, motion tracking, and eye tracking decide when to show which pictures provide more complete VR experience.
After learning this basic, I am interested in making some experiments with VR application for Android phones and tablets. I will share those learning experience after the experiments.



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