[Cyborg] medical mirror

Tomm tomm.fire at gmail.com
Sat Oct 9 22:03:11 UTC 2010

A tray app that monitors your heart rate is a great idea.  I wonder if the
time resolution is good enough to measure heart rate variation (HRV)?
 Variations in heartrate is also pretty interesting:

"[...] asked 52 adults to report how often they experienced positive
emotions like happiness, awe, and gratitude and how socially connected they
felt in their social interactions every day for a period of nine weeks. The
researchers also measured the HRV of each individual at the beginning and
end of the study by measuring heart rate during a two-minute session of
normal breathing. HRV at the beginning of the study predicted how quickly
people developed positive feelings and experiences of social connectedness
throughout the nine-week period. In addition, experiences of social
connectedness predicted increases in HRV at the end of the study,
demonstrating a reciprocal relationship between heart rate and having
satisfying social experiences."


On Sat, Oct 9, 2010 at 8:21 AM, Eric Boyd <mrericboyd at yahoo.com> wrote:

> http://www.youtube.com/watch?v=LyWnvAWEbWE&feature=player_embedded
> Basically, using nothing other than a webcam (1.3MP, 15 Hz!), they can
> read your heart rate.  Then they built that into a "medical mirror", so
> you can see your heart beat in the morning when you brush your teeth :-)
> I found one of his papers about it online, full text:
> Non-contact, automated cardiac pulse measurements using video imaging
> and blind source separation
> http://www.opticsinfobase.org/abstract.cfm?URI=oe-18-10-10762
> Looks to me like the big breakthrough here is the motion independence,
> which they got through a combination of face recognition and cropping
> and separating the video into it's three component colors.  They claim
> an average error from the reference pulseox reading of less than 1 BPM
> even with movement, that's pretty impressive.
> Anyone want to write a laptop app which would just keep the webcam on
> all the time and log your heartbeat?
> Eric
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