4 ms·
Just guessing here, but veins and blood flow are visible in infra red [1]. A color camera can also measure pulse using small color variations. [1] https://soft
by The_Double 9y ago
Just guessing here, but veins and blood flow are visible in infra red [1]. A color camera can also measure pulse using small color variations.
[1] https://software.intel.com/en-us/articles/pulse-detection-with-intel-realsense-technology https://software.intel.com/en-us/articles/pulse-detection-wi...
- MBCook 9y agoApple wants this to work in total darkness. So color wouldn’t work. Do we know if they’re projecting IR light (besides the dot pattern) that they could use to look for blood vessels?
- billyhoffman 9y agoYes. The iPhone X has something literally called the "Flood illuminator" which projects IR light. This is one of the many reasons FaceID is not reactively available to previous iPhones via a software update. > The flood illuminator produces infrared (IR) light, part of the electromagnetic spectrum that's invisible to the naked eye, to illuminate your face; https://www.forbes.com/sites/jvchamary/2017/09/16/how-face-id-works-apple-iphone-x/ https://www.forbes.com/sites/jvchamary/2017/09/16/how-face-i...
- MBCook 9y agoOh you’re right, I somehow missed that. Well that makes things more interesting doesn’t it. I guess that leads back to my question (in another comment) about whether or not face paint would effect it.