RE: Pulse Sensor: an Open Source Heart-rate Sensor that Rocks by Yury Gitman � Kickstarter

[Alan Jhonn Aguiar Schwyn]

Hi
Yes, the TurtleArt is slow to capture because it turn on the camera, wait for the pipeline, get a captureand save to the disk.. And after, the code load the image and analize it!
I make a plugin to the TurtleArt, that was derivated for another project...
It uses Pygame 1.9.1 (included in the plugin) that get a captures very fast...
The actual code is for detect a color and calibrate the code to "follow" this color... But is possible tomodify and make another things... The algorithm that detect the promedial color of a zone of a image is implemented by Pygame...
The code:
http://butia.git.sourceforge.net/git/gitweb.cgi?p=butia/butia;a=tree;f=followme_plugin;hb=HEAD


The same code in a .xo activity called "FollowMe Butia" is used to control the Butia Robot...
http://www.youtube.com/watch?v=5Nnc9Rn9GbY


It's possible make anything with this?
Alan
> To: sverma at sfsu.edu
> From: forster at ozonline.com.au
> Date: Wed, 20 Jul 2011 14:33:49 +1000
> Subject: Re: Pulse Sensor: an Open Source Heart-rate Sensor that Rocks by Yury Gitman � Kickstarter
> CC: devel at lists.laptop.org
> 
> Hi
> 
> You can do something similar by placing a finger over the camera and shining a light on your finger.
> 
> Unfortunately TurtleArt is a little slow to capture your pulse, the following executes a cycle in about 0.5 sec on a XO1.5
> 
> forever
>  show camera
>  read pixel
>  show heap
>  empty heap
> 
> This prints the rgb of one pixel centre image ( which is OK because the image is out of focus)
> 
> forever
>  print brightness  
> 
> averages over the image and takes round 2 seconds
> 
> Tony
> 
> 
> > http://www.kickstarter.com/projects/1342192419/pulse-sensor-an-open-source-heart-rate-sensor-that
> > 
> > Minus the Arduino, can this plug into the audio/mic port?
> > 
> > Sameer
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