NUI Group - Open Source Interface

Screensaver Solution?

2010-03-18T17:38:44-05:00

I am trying to run a multi touch capable application as a screensaver. Perhaps something like Fluid solver or something.

How do i get an application like Fluid Solver to run as a screen saver and still recognize inputs?

Difference between two IR filter ?

2010-03-20T06:54:50-05:00

Salut,

Quel est la différence technique entre les deux filtres suivant ?

52 mm - 850nm Infrared Infra-Red Filter

NIR Optical Filter, 850DF55, 25.4mm painted edge

Merci

==google translation==

Hi,

What is the technical difference between the following two filters?

52 mm - 850nm Infrared Infra-Red Filter

NIR Optical Filter, 850DF55, 25.4mm painted edge

Thank you

New CCV 1.3 Installer Released

2010-02-14T00:09:31-05:00

Hey guys we are happy to release CCV 1.3 which brings with it a much easier to use installer. We have worked on the tracking algorithm to provide much more smoother tracking, this includes a simple weighted low-pass filter and using floats instead of integers in our display mapping methods.

Please let us know any feedback and have fun! Getting started with computer vision and multi-touch has never been so easy.

Here are some of the changes:
- Move to LGPL License
- Fixed bug with acceleration value calculation
- Added raw binary TCP protocol (sync-header for blob data packet)
- Changed the color of buttons to red for better contrast
- Added 1-exp(accel/x) adaptive filter coefficient (for tracking smoothing)
- Fixed the blob count for blobs that are not sent ie. blob(0,0)
- More optimization for PS3 Eye
- Stopped using integers to for calibration mapping (CameraToScreenMap)
- Fixed known logging issue.
- See repository for full changelog

Blog Article | Project Page | Download Page | Get the Source

Best technique for temporary set-up? (moving to permanent after)

2010-03-20T15:33:10-05:00

Hello everybody!

I’ve been lurking for a little while, and I’m starting my first multi-touch setup. I’m a graphic design student working on my bachelor’s degree, and we were presented with creating a thesis project right around the midterm point of the semester. I’ve always been interested in multi-touch, and have been working on a very simple AS3 demo project that uses touch and sound together for my thesis presentation. But now, I’ve got to figure out a way to get a table up and running with limited time.

I’ve got 6 weeks until we have our gallery opening, and I want to use a multi-touch table displaying the demo program I’m writing. The show will last 1 week, and I have either 5 feet of wall space for a hanging display, or I can use some space in the center of the gallery for making a table. Which of the four processes would be the easiest to set up for temporary use? I’ve got access to a couple of LCD displays at my disposal (friends are IT professionals with computer parts sitting around everywhere), so I was thinking an LLP with an LCD, but I’m not *exactly* sure how that works and need to do a bit more research.

Any tips? Sorry if I sound extremely n00bish. I’m much better with the programming and coding end of things than the technical and mechanical end, so my building skills amount to not much. Any help would be great! Thanks!

-Brittany

CCV calibration on secondary screen?

2010-03-20T17:11:50-05:00

I’m running CCV on a Sony VAIO FW laptop for my MT table and connect the projector my laptop as a secondary monitor. When I enter calibration mode in CCV mode, however, it goes fullscreen on my laptop (primary display) instead of the secondary screen.

This happens even when I move the CCV program to the other screen and try to run calibration mode from that screen. Seems pretty ridiculous to have to mirror my display, especially considering that my projector resolution is 1024x768 and my laptop has an HD resolution of 1920x1080; mirroring would just not work well at all.

How do I connect my MT table display as a secondary monitor and have the calibration mode work? This would be a good feature for someone to work on this year in GSoC!

(ATTN: Students) Google Summer of Code 2010

2010-03-08T07:16:47-05:00

Hey students,

Wanted to give all the students and mentors out there a heads up, NUI Group will be applying for GSoC 2010, here is our ideas page: http://wiki.nuigroup.com/Google_Summer_of_Code_2010 (still updating)

Also below is the timeline for this years GSoC:

February 8:
Program announced. Life is good.

March 8:
~12 noon PST / 19:00 UTC
Mentoring organizations can begin submitting applications to Google.

March 12:
4 PM PDT / 23:00 UTC
Mentoring organization application deadline.

March 13-17:
Google program administrators review organization applications.

March 18:
~12 noon PDT / 19:00 UTC
List of accepted mentoring organizations published on the Google Summer of Code 2010 site.

March 18-29:
Would-be student participants discuss application ideas with mentoring organizations.

March 29:
~12 noon PDT / 19:00 UTC
Student application period opens.

April 9:
12 noon PDT / 19:00 UTC
Student application deadline.

Interim Period:
Mentoring organizations review and rank student proposals; where necessary, mentoring organizations may request further proposal detail from the student applicant.

April 21:
All mentors must be signed up and all student proposals matched with a mentor - 07:00 UTC

Student ranking/scoring deadline. Please do not add private comments with a nonzero score or mark students as ineligible (unless doing so as part of resolving duplicate accepted students) after this deadline - 17:00 UTC

IRC meeting to resolve any outstanding duplicate accepted students - timing TBD, will be announced well in advance

April 26:
~12 noon PDT / 19:00 UTC
Accepted student proposals announced on the Google Summer of Code 2010 site.

Community Bonding Period:
Students get to know mentors, read documentation, get up to speed to begin working on their projects.

May 24:
Students begin coding for their GSoC projects;

Google begins issuing initial student payments provided tax forms are on file and students are in good standing with their communities.

Interim Period:
Mentors give students a helping hand and guidance on their projects.

July 12:
~12 noon PDT / 19:00 UTC
Mentors and students can begin submitting mid-term evaluations.

July 16:
12 noon PDT / 19:00 UTC
Mid-term evaluations deadline;

Google begins issuing mid-term student payments provided passing student survey is on file.

Interim Period:
Mentors give students a helping hand and guidance on their projects.

August 9:
Suggested ‘pencils down’ date. Take a week to scrub code, write tests, improve documentation, etc.

August 16:
~12 noon PDT / 19:00 UTC
Firm ‘pencils down’ date. Mentors, students and organization administrators can begin submitting final evaluations to Google.

August 20:
12 noon PDT / 19:00 UTC
Final evaluation deadline

Google begins issuing student and mentoring organization payments provided forms and evaluations are on file.

August 23:
Final results of GSoC 2010 announced

August 30:
Students can begin submitting required code samples to Google

October (date TBD):
Mentor Summit at Google: Representatives from each successfully participating organization are invited to Google to greet, collaborate and code. Our mission for the weekend: make the program even better, have fun and make new friends.

Help with screen design for an LLP setup.

2009-12-08T18:05:43-05:00

I need help figuring out which type of screen or material to use for an llp setup. The budget for the screen itself is about 2,000 so price is not a huge concern. However I would like it to at least be 1/2 inches thick as I plan to build it a 48” by 85” or a 16 by 9 design. Also I have already seen how to mount the lasers. Just waht type of material should I use?
I was thinking either:
1. a combination acrlyic/rosco
2. a sheet of 1/2 acrylic and then a sheet of 1/8 that is the white/opaque acrylic to act as a projection surface.
3. a sheet of the enlighten acrylic
4. whatever someone else is using that is better than my dull ideas

Thanks for the help!!

My first build finished

2010-03-20T12:57:49-05:00

Thanx to everybody, this would have not been possible without this forum.

I love to experiment with Quartz Composer and started this MT-project just to expand my possibilities in QC.
On http://www.quartzcandy.com I’m sharing some quartz Compositions, check them out if you are running OSX.

Here’s my MT-desk.

Size : 70X54
foil : Lee 400
Resolution : 600X800
Projector : Benq 512 ST
camera : Unibrain I-fire
Light : 4X IR-led (48leds)
Audio : 100W amp 2X Speakers
Imac : 2 GHz intel Core Duo (2GB)
Soft : CCV, Quartz Composer

IR LED Strips from Environmental Lights are a joke

2010-03-19T19:49:34-05:00

I am seriously let down by these led strips. They really don’t cast any IR unless they’re 6 inches from the surface. They don’t even shine through acrylic to the camera - even my IR tv remote can do that.

How can these possibly be weaker than a tv remote?!?!? WHY MAKE THEM???

Trouble stitching cameras (got pictures)

2010-03-19T01:06:21-05:00

Hi all.

Working on an interactive laser lightshow using a touch table

Project is here: http://socialaser.cias.rit.edu/

We are having trouble stitching two PS3 eye camera feeds together. Software is CCV 1.3, codelaboratories driver, win7 x64. The problem is that we need to swap the x/y pixel dimensions, however the current rotation control is only rotating the image content, and not changing the feeds dimensions (as it should, I would think). Searching here did not turn up a solution… but I could be blind (quite possible :p )

Are there any controls that will do what we are looking for? Any other stitching software that would do the trick? I’m basically looking to put the cameras in ‘portrait mode’.

Thanks for your time, I know this is probably a stupid question.

--
Sincerely,
Kevin Whitfield
http://www.virtualmatter.org
socialaser.cias.rit.edu