Flash + Photoshop + Everything Cool! » Multitouch

Multitouch slides for TAC09 coming soon

admin — Wed, 16 Sep 2009 10:43:27 +0000

The Actionscript Conference has finally come to an end. It was a great conference and I got to meet a lot of people that I haven’t seen in some time and got to know even more cool people this time round.

I will be posting the slides for my multi touch session at TAC09 on this blog very soon.

Edit: The slides have been uploaded here

The Actionscript Conference – Multi-Touch in Flash

Cheers and keep a lookout for Flex Usergroup (http://fug.sg) meetups very soon

Plexiglas Endlighten

admin — Sat, 09 May 2009 09:50:25 +0000

I have been crazily busy these days and have not had the time to update on my adventures in multi-touch. The rear DI table has already seen some publicity on a few occasions.
This post will briefly show the new material that I had just received which will employ the DSI technique (Diffused Surface Illumination) that uses the Plexiglas Endlighten from Evonik. I took delivery 1 week back and just got the chance to test it out. Results were awesome and solves a lot of problems inherent with Rear DI.

Here are the photos (sorry for some of the blurred photos because I took them in a rush)
Also note that the protective sticker was on the endlighten so the blobs would have been diffused and don’t appear as clear as they would have. Edges were also not polished and were rough.

On the road to my first Rear DI Multi touch table

admin — Thu, 19 Feb 2009 16:07:45 +0000

Thanks to the help and advice from the guys over at NUI Group (www.nuigroup.com) forums especially the wonderful information supplied by PeauProductions (http://peauproductions.blogspot.com/), I have embarked on a project to build my own Rear DI Multi Touch table. I will be posting photographs and the progress of the building of the table.

This is the Playstation 3 EYE camera that will be modified to become IR capable. For people residing in Singapore, this is the packaging for the correct version of the camera to get. You can buy this at any Sony Style shop locally. Do note that some local game shops sell the European version of which I am unsure whether it is “friendly” towards modification.

The Camera removed from its shell

The dismantled pieces:

The lens mount removed from the circuit board:

I think I did a pretty lousy job in removing the IR blocking filter from the rear of the lens mount, look at those jaggy edges:

This is the IR blocking filter removed. It was damaged when it was removed.

The visible light filter installed (cut out from floppy disk). This filter functions by blocking out visible light and letting infrared light through.

And this is my work desk where all the mess is. The top right corner is a wide angle (180 degrees) IR illuminator that I am using for the Rear DI set up.

Next I will be making the box to sit the small piece of acrylic I got from a local art and craft shop (12″ x 18″ x 3mm(T)). It is available at Art friends for all you Singaporeans out there and costs around $8 only. Great for testing and fiddling around. I will be running tests soon using tbeta once I find time and I will post the tracking results.

On a side note: I am also intending to build a DSI table which uses a special acrylic called Endlighten. If you are living in Singapore/Malaysia and are interested in getting a piece of this very hard to get acrylic please contact me and let me know. I have managed to find a local manufacturer who has kindly indented and offered to laser cut the standard sheet (120″ x 80″ to 10 pieces of 39″ x 22″ x 10mm(T)) at $200 USD per piece. There are 4 pieces left for reserve as of this posting.