Let me know if this is something of interest to you.
This is still a research project.
My intention is to release it under an open source license at some point.
A brief example of what the ALT technology can do:
ALT can monitor pulse and respiration of a person even if the person is completely covered by a thick blanket.
Figure 1. A person reclining in an armchair and completely covered by a blanket.
Figure 2. Pulse and respiration ALT data for the person under the blanket in Figure 1. Several consecutive heartbeats are marked by the asterisks (*).
ALT is a non-contact technology. Current ALT hardware includes a Pi NoIR v2 camera connected to a Raspberry Pi 3B, and a Kinect for Xbox 360 unit which was used to illuminate the scene in a dark room shown in Figure 1.
You can find more details about the ALT tech here:
“What has happened while we slept?"
(https://www.linkedin.com/pulse/what-has ... r-misharin)
shows that ALT can detect heartbeats and respiration even when a person is completely covered by a thick blanket, and that ALT uses a motion detection algorithm which allows detecting small body movements.
“When your heart beats”
(https://www.linkedin.com/pulse/when-you ... r-misharin)
discusses potential applications of the ALT technology in medical imaging, including non-contact analog of the seismocardiography method of monitoring the mechanical activity of a heart.
“Non-contact real-time monitoring of heart and respiration rates using Artificial Light Texture"
(https://www.linkedin.com/pulse/use-arti ... t-misharin)
has some additional technical information about the ALT technology.