Comments for http://iad.projects.zhdk.ch/multitouch Fri, 10 Sep 2010 07:45:14 +0000 http://wordpress.org/?v=2.7 hourly 1 Comment on DSI - Diffused Surface Illumination by Nick Clarke http://iad.projects.zhdk.ch/multitouch/?p=90&cpage=1#comment-1325 Nick Clarke Fri, 13 Jun 2008 14:22:28 +0000 http://iad.projects.zhdk.ch/multitouch/?p=90#comment-1325 This is what I was thinking: Frost/Film on the glass Glass -A Gap- Endlighten This way the projected image would hit the frost which is directly under your finger. You could be right with the touch sensation of the material as I guess glass or plexi could feel quite odd. Not felt any frosting yet Was Endlighten what you used in your previous examples you blogged about? as the light does look very even. Home: Vista, Firefox 2.0.0.14 Work: XP Sp2, Firefox 2.0.0.14 At home I don’t have QuickTime but at work I do (I get a upgrade popup). Wonder if it could it be a verion thing. This is what I was thinking:

Frost/Film on the glass
Glass
-A Gap-
Endlighten

This way the projected image would hit the frost which is directly under your finger.

You could be right with the touch sensation of the material as I guess glass or plexi could feel quite odd. Not felt any frosting yet

Was Endlighten what you used in your previous examples you blogged about? as the light does look very even.

Home: Vista, Firefox 2.0.0.14
Work: XP Sp2, Firefox 2.0.0.14
At home I don’t have QuickTime but at work I do (I get a upgrade popup). Wonder if it could it be a verion thing.

]]> Comment on DSI - Diffused Surface Illumination by tim.roth http://iad.projects.zhdk.ch/multitouch/?p=90&cpage=1#comment-1323 tim.roth Fri, 13 Jun 2008 13:56:33 +0000 http://iad.projects.zhdk.ch/multitouch/?p=90#comment-1323 Well not sure about the gap... I put the projection material directly onto the plexi, so you touch the projection surface with your fingers. Putting the projection material under the plexi does not work, becuase then the IR Light does not get diffused properly. Putting a sheet of glass or transparent "normal" plexi over the projection surface works... but I prefer touching the projection material, just feels better:) The XXL just includes more of those deflecting thingies, not sure how this effects the image... What firefoy are you using and what OS? Works fine on my mac (safari/Firefox).. Well not sure about the gap… I put the projection material directly onto the plexi, so you touch the projection surface with your fingers. Putting the projection material under the plexi does not work, becuase then the IR Light does not get diffused properly. Putting a sheet of glass or transparent “normal” plexi over the projection surface works… but I prefer touching the projection material, just feels better:)

The XXL just includes more of those deflecting thingies, not sure how this effects the image…

What firefoy are you using and what OS? Works fine on my mac (safari/Firefox)..

]]> Comment on DSI - Diffused Surface Illumination by Nick Clarke http://iad.projects.zhdk.ch/multitouch/?p=90&cpage=1#comment-1321 Nick Clarke Fri, 13 Jun 2008 12:07:14 +0000 http://iad.projects.zhdk.ch/multitouch/?p=90#comment-1321 Great write up as usual. I check out the Endlighten product website and it looks quite promising. At the bottom of page 5 (English pdf) it mentions that there should be a gap in between the Plexiglas and the motif (image/picture). I guess you could remove the need for the tracing paper and use some frosted glass which would act as protection (not touching the Endlighten directly) and projection screen. As the glass would not be flexible the gap would remain constant. It’s a shame that it does not appear to be possible to send the IR one way without stopping camera from seeing the blobs. Would the XXL version make any difference or would that just reflect more light? Your site dies when viewed in Firefox, don’t think it likes the QuickTime plug in :) Great write up as usual.

I check out the Endlighten product website and it looks quite promising.

At the bottom of page 5 (English pdf) it mentions that there should be a gap in between the Plexiglas and the motif (image/picture). I guess you could remove the need for the tracing paper and use some frosted glass which would act as protection (not touching the Endlighten directly) and projection screen. As the glass would not be flexible the gap would remain constant.

It’s a shame that it does not appear to be possible to send the IR one way without stopping camera from seeing the blobs. Would the XXL version make any difference or would that just reflect more light?

Your site dies when viewed in Firefox, don’t think it likes the QuickTime plug in :)

]]> Comment on More DI Information by lseba http://iad.projects.zhdk.ch/multitouch/?p=38&cpage=1#comment-1024 lseba Fri, 30 May 2008 18:31:56 +0000 http://iad.projects.hgkz.ch/multitouch/?p=38#comment-1024 dont you get reflections of the screen from the floor with that silver foil? dont you get reflections of the screen from the floor with that silver foil?

]]> Comment on More DI Information by lseba http://iad.projects.zhdk.ch/multitouch/?p=38&cpage=1#comment-1023 lseba Fri, 30 May 2008 18:24:45 +0000 http://iad.projects.hgkz.ch/multitouch/?p=38#comment-1023 how wide is the beam that you get from your illuminators? where are they pointing? im having a lot of trouble wit the ligthing how wide is the beam that you get from your illuminators? where are they pointing? im having a lot of trouble wit the ligthing

]]> Comment on DI Setup by Someone http://iad.projects.zhdk.ch/multitouch/?p=37&cpage=1#comment-798 Someone Wed, 23 Apr 2008 18:04:04 +0000 http://iad.projects.hgkz.ch/multitouch/?p=37#comment-798 Which lens do you use for your unibrain board cam? Which lens do you use for your unibrain board cam?

]]> Comment on New Video, FINALLY by Williams http://iad.projects.zhdk.ch/multitouch/?p=59&cpage=1#comment-411 Williams Wed, 19 Mar 2008 05:52:52 +0000 http://iad.projects.hgkz.ch/multitouch/?p=59#comment-411 Hello! Very nice work! Let me ask you... how did you do that whith google eath ? is it a plugin? Pawels touchEarth ? what does it mean? a software? Do you have any Actionscript simple example? and the last question, :), do you know or tested using multitouch in flex ? I´m building a DI table, and i´m a flex programmer. Thanks Williams Hello! Very nice work!
Let me ask you… how did you do that whith google eath ? is it a plugin? Pawels touchEarth ? what does it mean? a software?
Do you have any Actionscript simple example? and the last question, :), do you know or tested using multitouch in flex ?

I´m building a DI table, and i´m a flex programmer.

Thanks

Williams

]]> Comment on More DI Information by Anthony L. http://iad.projects.zhdk.ch/multitouch/?p=38&cpage=1#comment-359 Anthony L. Tue, 11 Mar 2008 08:30:06 +0000 http://iad.projects.hgkz.ch/multitouch/?p=38#comment-359 Hi Tim, Thanks for all these information. What is the thickness of the acrylic ? Thanks Anthony Hi Tim,

Thanks for all these information.

What is the thickness of the acrylic ?

Thanks

Anthony

]]> Comment on DI tutorial from c-base by jon http://iad.projects.zhdk.ch/multitouch/?p=60&cpage=1#comment-183 jon Tue, 19 Feb 2008 12:40:35 +0000 http://iad.projects.hgkz.ch/multitouch/?p=60#comment-183 I should have searched more, I found it here: http://www.professionalplastics.com/ACRYLITERP and elsewhere in the US It is rather pricey: $574 (US) Thickness: .118" Area: 49" x 97" Just this one size was available at most suppliers I have a 0.22" thick piece of acrylic with a 72" span, and it has some flex when the surface is touched. Given the Acrylite product is only 0.118" I am concerned that the flex would be even worse, and unusable for touch screens (?) I wondered if glass as used in the c-base table might be more rigid (?) and resistant to flex than acrylic - although at a cost of being heavier and less safe. I should have searched more, I found it here:
http://www.professionalplastics.com/ACRYLITERP
and elsewhere in the US

It is rather pricey:
$574 (US)
Thickness: .118″
Area: 49″ x 97″
Just this one size was available at most suppliers

I have a 0.22″ thick piece of acrylic with a 72″ span, and it has some flex when the surface is touched. Given the Acrylite product is only 0.118″ I am concerned that the flex would be even worse, and unusable for touch screens (?)

I wondered if glass as used in the c-base table might be more rigid (?) and resistant to flex than acrylic - although at a cost of being heavier and less safe.

]]> Comment on DI tutorial from c-base by jon http://iad.projects.zhdk.ch/multitouch/?p=60&cpage=1#comment-155 jon Fri, 15 Feb 2008 23:36:43 +0000 http://iad.projects.hgkz.ch/multitouch/?p=60#comment-155 Have you tried the "PLEXIGLAS XT Grey RP 99561" product the c-base site states as being better? The data sheet linked from the c-base web page indicates it is acrylic with a surface finish to diffuse the projected light. Since this implies no gluing of diffusers (lee, rosco, etc.) to acrylic and thus a simpler design, even if a little pricier - it seems more practical. Any idea on the cost, or suitable alternatives? I was unable to find this product for sale anywhere. When I purchased my acrylic sheet the plastics supplier offered me another acrylic sheet product that was 'suitable for projected images'. I was unsure if it would work well, so I did not buy it. The surface treatment on this product increased the price of the 6mm thick acrylic sheet by 50%, but this is still much cheaper than what a roll of Lee filter, or Rosco costs. I'm not sure if this is equivalent to the product referenced by c-base though. Any thoughts? Thanks for a very informative blog! Have you tried the “PLEXIGLAS XT Grey RP 99561″ product the c-base site states as being better? The data sheet linked from the c-base web page indicates it is acrylic with a surface finish to diffuse the projected light. Since this implies no gluing of diffusers (lee, rosco, etc.) to acrylic and thus a simpler design, even if a little pricier - it seems more practical. Any idea on the cost, or suitable alternatives? I was unable to find this product for sale anywhere.

When I purchased my acrylic sheet the plastics supplier offered me another acrylic sheet product that was ’suitable for projected images’. I was unsure if it would work well, so I did not buy it. The surface treatment on this product increased the price of the 6mm thick acrylic sheet by 50%, but this is still much cheaper than what a roll of Lee filter, or Rosco costs. I’m not sure if this is equivalent to the product referenced by c-base though. Any thoughts?

Thanks for a very informative blog!

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