Re: [biocurious] Open-Source PID: Biological Applications

[Nathan McCorkle]

On Sat, Jun 30, 2012 at 5:48 PM, Tristan Eversole
<custome...@trioptimum.com> wrote:
> Well, I guess I should specify what I've been thinking of doing:
>
> I'm trying to figure out a way to keep brachiopods in aquaria.
> Nobody knows how to keep brachiopods in aquaria. Nobody who will talk to me, anyway.
> Now, I also hold an interest in control theory, although I lack the mathematical background to really get it. So I hit on the idea of creating a PID-controlled data-logging aquarium, which could maintain a fine control of the conditions my hypothetical brachiopods were exposed to, or at least tell me what had happened shortly before they all died.

Tristan, if you could establish a list of growth parameters worth
tweaking, then all you'd need to find is a decent way to monitor the
organism's health/happiness, ideally quickly enough so you can keep it
happy without it dying first. Maybe its IR signature changes, i.e.
gets hotter or colder as it becomes unhappy/sick... maybe it changes
color, maybe this could be useful:

Eulerian Video Magnification for Revealing Subtle Changes in the World
http://people.csail.mit.edu/mrub/vidmag/

--
Nathan McCorkle
Rochester Institute of Technology
College of Science, Biotechnology/Bioinformatics

[Nathan McCorkle]

Looks like there's a reasonable number of project on Github these days
fitting the keywords:
https://github.com/topics/eulerian-video-magnification

It's definitely a topic that I think about every 6-12 months or so...
for one reason or another.
One of the repos is even an Android project with a compiled binary
available for download
(https://github.com/w-zx/EVMHR/releases/download/v0.1-alpha/EVMHR-v0.1-alpha.apk)
unfortunately it only has Chinese writing, so I'm not sure what the
popup messages say (I haven't tried google translate yet) and it only
takes ~10 seconds of video, then processes it (quickly) and displays a
number (I guess the detected heart rate).

This C++ (Qt and OpenCV) project looks a lot more adjustable, but I've
yet to try it out:
https://github.com/wzpan/QtEVM

On Fri, Jul 6, 2012 at 12:45 PM Patrik D'haeseleer <pat...@gmail.com> wrote:
>
> The Eulerian magnification method relies on very simple image
> processing methods, so it should be easy to implement even if they
> don't distribute the code (which they may).