first of all....you are doing a great job!!! im really happy to have acces to all these information and im sure that in ~5 years MTTs will be all around us!
im a german student and saw a MTT table at a fair in berlin (they used cubes for making music...it was mindblowing!)
although i dont have any programming skills im creative and a good handcrafter.
after viewing the fantastic results from several members i decided to start my own project. chakkaaa!!
i started reading lots of beginner threads and of course the community book (GREAT!!!!) im fascinated by fiducials and therefore im building a DSI table..
i will try to document all of my steps and create a detailed turorial afterwards.
after a week reading, i made a concept sketch (with googlesketch...great tool!)
my budget was 2000€ (now i spent >3500...(now >4000) but before ordering and making a shopping list i have some questions:
1) ive seen a setup where they put a “heat-absorbing” lense infront of the projector which also reduces IR distortion… would u recommend such a heat absorbing lense?
for example: Heat Absorbing Glass
2) as far as i understood… the more cameras, the better the recognition… so why not use 3,4,5… cameras with a multicam driver?
so.... tomorrow im building my MTmini to get in touch with thesoftware and the basic principles.
I cant say whether a Hot Mirror is with it our not as i dont have one in mine.
As far as cameras go, do you think you will do Tags… as Tag need the extra resolution. if not i would stick with a single camera, as the more camera you have the more work the computer has to do to stitch them together.
And the current release of the PS2 Multicam driver only supports two.
have fun, and i hope you post some pictures for all of us.
welcome to the NUI Group .
great that you are fully motivate to build your own .
we recommend hot mirror in order to avoid hot spots (http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1492, check also Rosco))
Detecting markers (fiducials) require good camera .
You can start with a PS3 , the size will be limited (smtg like 48*68cm+/-))
@kiwidave
yes i want to use tags, but i dunno which camera is the best choice…
@jimihertz
i understand that the “covered” area of one PS3 camera is “48*68cm “...but isnt the covered area depending on the distance of the camera… (what ist the optimal distance?)
i know that my budget isnt that big but ill try to get the best components and the PS3 seemed to be a good choice.
because i want good results i will use two cameras but are there better choices than the PS3 cameras with higher resolution and FPS?
i saw a table which reacted to hand movements 2-3” above the surface!!
i understand that the “covered” area of one PS3 camera is “48*68cm “...but isnt the covered area depending on the distance of the camera… (what ist the optimal distance?)
you right ,obviously, this works for blob detection but the detection of fiducials requires good definition and low image distortion.
i guess Trackmate or Reactivision don’t support multicam…
After three weeks of research in this forum/wiki and several other sites & blogs i understand the basic (!) functions of multitouch =)
Before buying the hardware i needed to get an overview of the existing projects / setups! I saw some really amazing stuff and i ready to start my own project.
First i checked my budget (1000€)again...i thought it would be enough to get a good DSI table with good fidicual & object recognition…
More fps + higher resolution = better fidicual recognition + faster touch response but also higher cpu performance....but after looking at the prices of the short throw projectors (~500€) and the endlightend acrylic or even plexiglas 7doo6/9… my new budget is 2000€ ~ 3000$
Can i use the plexiglas 7doo6/9 ?what about scratches ? is it possible to put another layer thin acrylic / or silicon layer on top of the plexiglas / endlightened ?
built an MTmini today =) ...and it works!! i used my netbook (ee pc 1005)...thats why the smoke demo was a little laggy.
the configuration of the cam picture is tricky… isnt there a better description than in the PDF (getting started)…
also couldnt try the flash demos… the “gateway.bat” causes an error… anyway… im testing some other apps just to get a feeling for it.
please have a look at the attached pictures. im trying to figure out the optimal dimensions / table size and started making some sketches
max. table height is 80cm.
first one shows the projector vertically. that gives me a possible projection distance from ~53cm . this would result in projection image of 92x52 (~42” diagonal)
see the exact dimension for the vertical setup (s1200-vert)
second shows my horizontal setup (with one mirror) which results in a longer proj. distance (~75cm)....which is too big (or isnt ?)
i thought a lot about the best dimension two use with 2x PS3 cameras but somehow i cant figure out how the two field of views are combined and what screen size goes best with it… 40” , 46” or even 50”
overall its a very fast system which can be overclocked to 4x 3,84ghz with very good power consumption + without changing core voltage. but therefore cooling was twice as important since i dont want to heat the interior of the box / projector + use the 5x 140mm fans to reduce overall interior temp.
i hope all missing party arrive by the end of the week…
I dont know if you are the US or not but HOLODIPLAYS.com sells 7d006 and others. plan on spending alot of $ on that stuff. I got example kits from the which include halo mirage, halo dark, halo lite, halo grey.
Halo mirage is almost clear, halo lite is milky clear, halo grey is a grey/mily and halo dark is a dark grey milky. If i had to guess, halo dark would be closest to 7d006 but idk cause i dont have 7d006.
The pricing sheet says this
16:9 40” diagonal is $326.00 for all halo lite, grey and dark.
16:9 halo mirage is $396.00 for 40”.
Honestly, if your making alot of tables, go with the holo product ofer 7d006, its cheaper and easier to get.
status quo:
im building a wood frame and i tried to put the pc case inside...but its way too big! ill disassemble the components again and place everything seperately.
note for my next project: a miniATX system would have been better, cheaper and with not much less power than i thought.
would the new multicore netbox from Acer Revo R3610 with 2x1,66 and gf 8400 videocard deliver enough power for mt apps ?
