This is a something a bit out of left field, but it's really cool. Nobumichi Asai, a Japanese artist from the WOW collective, has used face mapping and digital video projection to create something rather unique: virtual animated makeup. A video is worth ten thousand words, so I'll let it speak for itself.
Asai's team used Intel's RealSense 3D camera technology to map the model's face, and (obviously) a powerful Intel-powered computer to stitch the whole thing together. The group first scanned their model's face before using photogrammetry to create a 3D model of the subject. That way, the team had the necessary parts to map the gorgeous 2D animations they had prepared into 3D space.
For the final result, Asai placed infrared markers on the woman's face so that the five IR cameras around her could track her head and facial expressions. A Core i7-6700K-powered computer then combined all the tracking data together for output to a digital projector, and bam, a perfect light overlay. The result is pretty stunning.