The processing power is a thorny aspect of virtual reality, including for eyewear designers. This is the key to a good immersion condition in the virtual world. If the onboard power is insufficient to display the 3D scene, latency, that is, the delay of posting images of the 3D scene based on the movements of the wearer of the bezel elongates. More images in choppy, a virtual universe shifted and it is an immersive effect that soars. Many of those who tried the first models of Oculus experienced a feeling of seasickness due to latency. 30 ms of latency are enough to make the uncomfortable scene. For Microsoft researchers, there is a solution, the Cloud.
Microsoft pushes its Azure Cloud to run 3D games and applications of VR
A few days ago, Microsoft Research researchers published details of its technology Kahawai. It can alleviate the graphics chip an Xbox or a cellphone to display complex 3D scenes. some of the treatment are transferred to a server in the Cloud. Kahawai uses the Microsoft Azure Cloud Computing service to calculate the 3D scenes and then send back them in the form of h.264 video easily display by a few powerful terminal. The approach applies to video games, but also virtual reality where it could provide an answer to this need for low latency time.
Microsoft wants to apply this approach to the game, but also to virtual reality helmets. These, which should remain light can have an electronics very powerful, less than reattach them to a powerful PC, as is the case of the Oculus. In the demonstration presented by researchers, researchers have reduced latency in a 120 ms 3D scene to 13 ms only. There again, the calculations were deported in the Cloud. The device therefore has unlimited computing power. Arises however latency introduced by Internet because if the scene can be calculated very quickly, we need to transmit the video stream via the Internet. Researchers have circumvented the constraint by anticipating the calculations based on the move initiated by the bearer of the headset. Images are calculated in advance, transmitted and it is the headset that displays if they correspond to the movement.
The Cloud, a solution to applications of virtual reality without limits of complexity and seasickness in the key? The solution, yet unimaginable a few years ago now seems possible.
Translation : Bing Translation
“Irides: Attaining Quality, Responsiveness and Mobility for Virtual Reality Head-mounted Displays”, vidéo Microsoft Research, May 1, 2015