[HacktionLab] micro workshop idea - interactive meetings using laser pointers

[naomi at aktivix.org]

I've heard there's some pretty amazing  
blob/edge/brightness/area/intensity detection technology out there  
already ...

Not in front of our noses I admit, but a few inches above ...


Quoting Mike Harris <mike at mbharris.co.uk>:

> On 30/05/2013 13:47, johnc wrote:
>>
>> This type of problem is known as blob detection. There are some good
>> free machine vision libraries for doing this including opencv. There's
>> quite a lot of samples included with these libraries.  I played with
>> some edge detection stuff in python a while ago and got it working
>> with a web cam without too much hassle. Also Beth has some some recent
>> experience with machine vision stuff in C so she might be able to give
>> you some code to get you started.
> we could always all wave our hands about to decide whether we agree on
> where the blobs are ... ;)
>>
>> P.S. hope those lasers are Class I so we don't blind anybody
>>
>> On 30/05/13 10:40, Andy S wrote:
>>
>>
>> > On 29 May 2013 17:42, Mick Fuzz <mickfuzz at clearerchannel.org
>> <mailto:mickfuzz at clearerchannel.org>> wrote:
>>
>> > On 29/05/13 17:25, Gareth Coleman wrote:
>> > >
>> > > You could call out for a vote at specific times, and it would take
>> > > just a few seconds for everyone to get their spot on target and then
>> > > the results would be visible. Each vote is equal, unlike our voices
>> > > which have a certain 'power' despite all our efforts to consciously
>> > > equalize them.
>> > I love this idea! Let's do it.
>>
>>
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>>
>> > B
>> > e interesting to see how you count the laser spots especially when
>> they are spread evenly across the selection as they will all be moving
>> quite a lot, unless people have very steady hands. Obviously the more
>> people involved, the harder this gets, unless you have an automated
>> process to count them (well lets face it, a photo would do!)
>>
>> > A
>>
>>
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