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Webcam Pulse Detector

259 pointsby theschwaabout 12 years ago

22 comments

theschwaabout 12 years ago
The paper that this is based on is also pretty fascinating: Eulerian Video Magnification for Revealing Subtle Changes in the World <a href="http://people.csail.mit.edu/mrub/vidmag/" rel="nofollow">http://people.csail.mit.edu/mrub/vidmag/</a>
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Osirisabout 12 years ago
There is already an Android app[1] that does something similar. You put your finger up to the rear-camera and it detects your heart rate.<p>[1] <a href="https://play.google.com/store/apps/details?id=si.modula.android.instantheartrate&#38;hl=en" rel="nofollow">https://play.google.com/store/apps/details?id=si.modula.andr...</a>
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dlgeekabout 12 years ago
Has anyone been able to get it to work? Whenever I try to open the stats display, I get:<p>OpenCV Error: Assertion failed (p.checkVector(2, CV_32S) &#62;= 0) in polylines, file /tmp/buildd/opencv-2.3.1/modules/core/src/drawing.cpp, line 2064
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runebabout 12 years ago
Give it a video feed from a political debate and live-tweet the politicians pulse on different topics. I foresee a future of politicians sporting bangs and bob cuts.
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Swizecabout 12 years ago
Cool fact, a Slovenian company that is now SF based has made this tech into an iPhone app a few months ago. -&#62; <a href="http://www.azumio.com/apps/cardio-buddy-2/" rel="nofollow">http://www.azumio.com/apps/cardio-buddy-2/</a><p>I really like their apps and I'm quite proud that they originate from my neck of the woods.
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pstuartabout 12 years ago
Add some software to do expression analysis a la Paul Ekman [1] and one has a remote non-invasive "lie detector".<p>[1] <a href="https://www.paulekman.com/" rel="nofollow">https://www.paulekman.com/</a>
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pathdependentabout 12 years ago
I haven't downloaded this yet, but I certainly will. If it is accurate and reasonably precise (yea, what does that mean?), I'd like to have it running in the background, gathering data as I work, while also gathering statistics about my work. I, like most of the people here, am a productivity junky. I wonder if a heightened pulse could indicate mounting stress, which necessitates a break. Sure, I have other machinery that could indicate mounting stress -- like my mind -- but the quantitative, off-loaded metric shifts responsibility in a way that could be helpful. "I'm not really stressed," says me to my brain. "No, your heart rate is quite high," says my computer to me.
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dr_about 12 years ago
Interesting. There was a Rock Health company that created an app using this technology. The app is called Cardiio. I know the founders were from MIT/Harvard but can't recall if they were the same people who conducted this research.
hacabout 12 years ago
I've gotten this far trying to install this on Lion:<p>brew install gfortran<p>sudo easy_install scipy<p>sudo port install opencv +python27<p>export PYTHONPATH=/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/:$PYTHONPATH<p>wget <a href="http://openmdao.org/releases/0.5.0/go-openmdao.py" rel="nofollow">http://openmdao.org/releases/0.5.0/go-openmdao.py</a><p>sudo python ./go-openmdao.py<p>cd ~/Downloads/webcam-pulse-detector-master/openmdao-0.5.0<p>. bin/activate<p>cd ~/Downloads/webcam-pulse-detector-master &#38;&#38; python get_pulse.py<p>Hope it's helpful to anyone else doing the same. OpenCV is segfaulting now, but I may update this later if I get it.
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tocommentabout 12 years ago
This would be an awesome application for google glass! Does anyone know if it's possible?<p>Imagine being able to look at someone and know their pulse. You'd have a wearable lie detector.
tamersalamaabout 12 years ago
I haven't been amazed for a while. Thank you.
leed25dabout 12 years ago
Great App for poker players
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dyno12345about 12 years ago
I want to point it at crowds and get an aggregate crowd-pulse rate! Measure the excitement!
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jedanbikabout 12 years ago
Cool!<p>Reminds me of this question on Stack Overflow:<p><a href="http://stackoverflow.com/questions/12416772/is-there-an-equivalent-of-the-matlab-idealfilter-for-python-in-scipy-or-other" rel="nofollow">http://stackoverflow.com/questions/12416772/is-there-an-equi...</a>
lucaspillerabout 12 years ago
[Not a Python user] What is OpenMDAO and how do I install it on OS X?
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timothyboneabout 12 years ago
This looks great for a music performance stunt -- the audience doesn't know but the DJ rigged up a webcam as a trigger!
LAMikeabout 12 years ago
what if someone created passwords based off of your brainwaves (assuming every brainwave is unique as a fingerprint)
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hcarvalhoalvesabout 12 years ago
How precise is this, do we have data? I'm guessing it depends on the refresh rate of your webcam.
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gluxonabout 12 years ago
What in the world? Is this magic?
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mikaelfabout 12 years ago
Why isn there a live demo?
jacobjbernsteinabout 12 years ago
Awesome. Could open up a whole field of applications.
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nu2ycombinatorabout 12 years ago
Is there a demo link for this application?
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