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

[kriptick]

i love pocketable gadgets so would be sorely tempted to nick any laser pointer "lent" to me. suspect others may do similar? 
also i'm sure any daily mail undercover journos present would make up a story about us planning to crash passenger jets by collectively blinding the pilots. wot a cynic i am!

  ----- Original Message ----- 
  From: Mike Harris 
  To: hacktionlab at lists.aktivix.org 
  Sent: Thursday, May 30, 2013 2:58 PM
  Subject: Re: [HacktionLab] micro workshop idea - interactive meetings using laser pointers


  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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  Mike Harris
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