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Posted: 03 May 2010 06:49 AM   [ Ignore ]   [ # 16 ]
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Hi,
Great work.
Can you share the name of the proprietary projection blending software you use?

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Posted: 03 May 2010 06:51 AM   [ Ignore ]   [ # 17 ]
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mobius - 28 April 2010 06:30 PM

why did you choose 850nm lasers when 780nm lasers are much cheaper?

You’re right, unfortunately they are more expensive but the results with the 850nm are way better.
This argument is valid if you use PS3Eyes, somehow the CCD is much more sensible to this wavelength which gives you more contrasted blobs.
If you use other cameras, obviously you can get other (better?) results with the 780nm lasers.

We tested every IR laser wavelength from Aixiz, and we can say for sure that 850nm are the best ones you can get if you’re using the PS3Eye camera for blob tracking.

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Posted: 03 May 2010 03:01 PM   [ Ignore ]   [ # 18 ]
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thanks for the info, really helpful having this insight for building big llp mt. great job!

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Posted: 05 May 2010 06:56 PM   [ Ignore ]   [ # 19 ]
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That is REALLY cool. Very inspiring, thanks!

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Posted: 06 May 2010 01:28 AM   [ Ignore ]   [ # 20 ]
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really cool installation

I want to know more about the tempered glass and the rosco black.
can you tell me more about it??

the acrylic is the one that the people touch, im i right ?? then its the rosco black that is covering the tempered glass?? can you tell us which is the distances between this 2 components ?? acrylic and glass ??

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Posted: 07 June 2010 07:43 AM   [ Ignore ]   [ # 21 ]
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Hello All,
I’m planning on building one myself now. Working on getting all the parts, will probably post again here when I get them and I reach an assembly block smile. For now I want to clarify something regarding the software.

What software do I need to make my 1x1m (test) touchscreen work ? I have a computer running windows. What do I need to download and install in order to interact with the windows OS interface ? I mean there is TUIO, TouchLib and bunch of others ... that confused me. Which is best for what i need ?

Thank you.

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Posted: 07 June 2010 03:34 PM   [ Ignore ]   [ # 22 ]
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Totally awesome!

Just like javiadas I am interested about your |glass|rosco|acryllic| setup. What is the thickness of the glass and the acryllic? How did you put them together?
And what is your experience in durability of your acryllic when it comes to fingers, marks and whatever things people touch the screen with?

Do you think replacing the acryllic with a thin glass layer, to increase durability and cleanabilityt, would be possible?

Would it be possible to use markers as well in your setup (if it was flat or by holding it up to the screen?) --> that might be a bit more of a CCV question and I have to say I am not really into that atm..

Thank you very much!

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Posted: 07 June 2010 06:03 PM   [ Ignore ]   [ # 23 ]
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what i know is that to use markers you need to use a different setup this setup s LLP

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Posted: 08 June 2010 01:54 AM   [ Ignore ]   [ # 24 ]
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Ofcourse, you are right, DI needs the be used for markers, so, forget about that question grin

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Posted: 10 June 2010 11:08 AM   [ Ignore ]   [ # 25 ]
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Jarno - 07 June 2010 03:34 PM

Totally awesome!

Just like javiadas I am interested about your |glass|rosco|acryllic| setup. What is the thickness of the glass and the acryllic?(1) How did you put them together?(2)
And what is your experience in durability of your acryllic when it comes to fingers, marks and whatever things people touch the screen with?(3)

1. 10mm each.
2. Applied the Rosco to the glass with double-sided tape, then installed the acryllic in place and the glass+Rosco after.
3. Not good enough really, should apply an anti-scratch/low-friction foil.

Jarno - 07 June 2010 03:34 PM


Do you think replacing the acryllic with a thin glass layer, to increase durability and cleanabilityt, would be possible?

It would.

Jarno - 07 June 2010 03:34 PM


Would it be possible to use markers as well in your setup (if it was flat or by holding it up to the screen?) --> that might be a bit more of a CCV question and I have to say I am not really into that atm..

Thank you very much!

You can, but it’s tricky since it’s an LLP.

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Posted: 11 June 2010 08:02 AM   [ Ignore ]   [ # 26 ]
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Great and Nice ... CHEERS!
shared!!!!!!!!!!

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Posted: 21 June 2010 10:20 AM   [ Ignore ]   [ # 27 ]
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serratiago - 03 May 2010 06:51 AM

mobius - 28 April 2010 06:30 PM
why did you choose 850nm lasers when 780nm lasers are much cheaper?

You’re right, unfortunately they are more expensive but the results with the 850nm are way better.
This argument is valid if you use PS3Eyes, somehow the CCD is much more sensible to this wavelength which gives you more contrasted blobs.
If you use other cameras, obviously you can get other (better?) results with the 780nm lasers.

We tested every IR laser wavelength from Aixiz, and we can say for sure that 850nm are the best ones you can get if you’re using the PS3Eye camera for blob tracking.

I saw the photo that the screen is in front of large windows. Does it work in daylight? Is it advisable to use 28mW 850nm lasers instead of 10mW 850nm.

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Posted: 22 June 2010 11:27 AM   [ Ignore ]   [ # 28 ]
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K_O_V - 21 June 2010 10:20 AM

serratiago - 03 May 2010 06:51 AM
mobius - 28 April 2010 06:30 PM
why did you choose 850nm lasers when 780nm lasers are much cheaper?

You’re right, unfortunately they are more expensive but the results with the 850nm are way better.
This argument is valid if you use PS3Eyes, somehow the CCD is much more sensible to this wavelength which gives you more contrasted blobs.
If you use other cameras, obviously you can get other (better?) results with the 780nm lasers.

We tested every IR laser wavelength from Aixiz, and we can say for sure that 850nm are the best ones you can get if you’re using the PS3Eye camera for blob tracking.

I saw the photo that the screen is in front of large windows. Does it work in daylight? Is it advisable to use 28mW 850nm lasers instead of 10mW 850nm.

We do use 28mw lasers (just noticed we had in the list of materials 10mw ones. Sorry about that. Fixed now.)

Yes, it works on daylight but not so good when the sun is strong. 8x 28mw lasers are very powerful for the surface area we have and you can’t compete with the sun really smile. The best solution is to put a blind screen between the display and the sunlight or, even better, put some 850nm IR blocking filters in the windows wink

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Posted: 24 June 2010 01:48 PM   [ Ignore ]   [ # 29 ]
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Love it.

Will the “I upload my custom app"-thing be implemented in PyMT as well?

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PyMT—Create Multitouch Software easily!
Movid—New cross-platform tracker, work in progress!

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Posted: 25 June 2010 12:17 PM   [ Ignore ]   [ # 30 ]
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Hi,
Great installation!
I wanted to ask 3 questions:
- why you wrapped edges of acrylic and what did you use for it?
- how did you managed to make so smooth surface of Rosco Black - no folds at all - only by using acrylic on top and double sided tape?
- Are 28mw Lasers more dangerous compared to 5mw?
Thanks.

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