Google Class VR device knowledge

Objective

The Google VR device referred to herein refers to:

Google's cardboard, Samsung Gear VR, Storm mirror and other such mobile phone VR box, and not refers to HTC Vive this type.

stereoscopic perception of human eyes

There is a difference in what people see in the left and right eyes, and the binocular vision system in our brains uses this difference to calculate distance.

Cardboard raw materials

Convex lens 2 pieces (recommended focal length 40, diameter 25)

Draw good cardboard pattern of cardboard, official website: https://vr.google.com/cardboard/get-cardboard/(the lower half has build it youself)

Cardboard principle

The distance between the two eyes is approximately 6cm, while the GVR SDK has a left Camera. Position.x is -0.03, rightCamera. Position.x is 0.03, this distance is exactly the distance between the eyes of the human.

In fact, this principle and we go to the cinema to see 3D movies to take 3D glasses almost. Cardboard shows a different picture for each eye, although each eye sees only one, but our vision system can automatically correlate the two images so that the brain thinks it's a stereoscopic image.

In layman's terms: Virtual distances are created by optical structures. Mobile phone is just a plane, placed close to the eyes, through the calculation of the phone image pre-distortion, distortion, and then through the cardboard of two convex lenses to see the image back, and then generated a virtual focal length.

Why does it produce dizziness and nausea?

Our human eye observes that real-world images are real-time, such as moving your eyes from the cup to the keyboard, which is timely feedback. And if the head has turned when we are wearing VR eyes, but the image is not refreshed in time and stays in the previous frame, it will cause error messages to our brains, causing us to appear dizzy and disgusting phenomenon.

Daydream

Platform Official website: https://vr.google.com/daydream/look deeper comfortable headsets and a intuitive controller for rich VR E Xperiences.

Android platform VR standards, developers no longer need to re-adjust the adaptation, only need to follow the daydream of a development standard just fine

More information:

Meet Daydream, Google ' s vision for virtual reality [YouTube]

What mobile VR pain points does the Google daydream platform address?

Other equipment

Other more expensive VR devices, such as HTC Vive,facebook Oculus Rift need to be combined with a powerful PC, while Sony's PSVR need to be combined with PS.

Report

Resources:

The stereoscopic perception ability of human eye [stereoscopic China]

Why Google Glass (Google glasses) is so close to the eye, but it can be clearly imaged?

Google Class VR device knowledge