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Facebook develops real-time, interactive VR avatars
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IANS | 27 Jun, 2019
In a bid to make virtual reality (VR) experience highly believable,
researchers from Facebook Reality Labs (FRL) have developed a
revolutionary system called "Codec Avatars" that gives VR users ability
to interact with others while representing themselves with life-like
avatars precisely animated in real-time.
"Our work demonstrates
that it is possible to precisely animate photorealistic avatars from
cameras closely mounted on a VR headset," said the study's lead author
Shih-En Wei, a research scientist at Facebook.
The researchers
have configured a headset with minimum sensors for facial capture and
their system enables two-way, authentic social interaction in VR.
The
team said the VR system can animate avatar heads with highly detailed
personal likeness by precisely tracking users' real-time facial
expressions using a minimum set of headset-mounted cameras (HMC).
"By
comparing these converted images using every pixel--not just sparse
facial features--and the renderings of the 3D avatar," noted Wei.
"we
can precisely map between the images from tracking headset and the
status of the 3D avatar through differentiable rendering. After the
mapping is established, we train a neural network to predict face
parameter from a minimal set of camera images in real time," Wei added.
Besides
animating the avatars in VR, Facebook's team is also building systems
that may enable people to quickly and easily create their avatars from
just a few images or videos.
The Facebook team will demonstrate
their VR real-time facial animation system at "SIGGRAPH 2019", which is
set to be held in Los Angeles between July 28-August 1.
The
researchers will present an Artificial Intelligence (AI) technique based
on Generative Adversarial Networks (GANs) that performs consistent
multi-view image style translation to automatically convert HMC infrared
images to images that look like a rendered avatar but with the same
facial expression of the VR user.
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