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Notes: Thesis Log



Posting Mouse Events

No idea how fast it is, but I’m going to try it with my touch table tomorrow.


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Posted Feb 28, 11:07 AM by Dylan Moore ·

It's Alive!

Pictures of my multi touch table, and the obligatory movie of IR blobs. I don’t have the compliant surface on yet, so it’s a little faint. But you can still see the frustrated total internal reflection (FTIR) effect. Hoorah.

(photos in full post)

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Posted Feb 25, 10:45 AM by Dylan Moore ·

Mouse control...

The answer is in max/msp’s aka.mouse object…

Masayuki Akamatsu, will you be my hero?

Posted Feb 24, 01:27 PM by Dylan Moore ·

Data Visualization

As I’m developing my own viz tools to see hundreds of thousands of color points for my thesis, I’m going to quickly whip up some tools in Blender (why not give it a try?) and in Python (so quick…)

The biggest problem will be normalizing my high dynamic range (HDR) data into normalized 8 bit-per-channel color ranges (LDR) without getting rid of my initial data.

Setting Vertex Colors from Python

Posted Feb 24, 07:29 AM by Dylan Moore ·

Table Progress, Tuesday Night.

I have the majority of my wooden frame built for my multi-touch table. I’m glad i went the route of building it all myself. After adjusting a few parts to increase rigidity, I’ll be ready to install the rest of the IR LEDs and try a test run…!

I’m recording video of all of the construction progress, and I’ll be adding them to a yet-to-be-made youtube account. From there, I’ll post them up here. I’ll eventually be making all of my table plans available to whomever wants to make a table, but doesn’t want to take the time to design it.

(PS… It’s tuesday. Thanks, isittuesday,com!)

Posted Feb 17, 03:53 PM by Dylan Moore ·


HID Keys project for AVR

USB 2.0 Developer Docs

More AVR-USB Stuff

Posted Feb 11, 08:34 AM by Dylan Moore ·

Is it tuesday?

My favorite thing in the world isn’t just that exists…
It’s that has an RSS feed.

Posted Feb 10, 04:56 AM by Dylan Moore ·

Yeah. No more coffee for me.

URL clipboard for friday morning:
(… I’m working my way up to 2009, one shader at a time…)

maybe I’ll sleep tomorrow? ( =

Posted Jan 22, 06:45 PM by Dylan Moore ·

GPU Gems

GPU Gems Edited by Randima Fernando can be found as an HTML version on nvidia’s developer site. (This is old news to many, I’m sure. But… Yay nvidia!)

[ Link ]

I’m particularly drawn to the section on image processing on the GPU, specifically chapter 21, which talks about creating a real-time glow. Great for the algorithm, but I’m more of a GLSL guy than Cg—so here’s some GLSL specific links:

[ Image Filtering with GLSL ]

Posted Jan 21, 09:19 PM by Dylan Moore ·

i-fire cameras for my table

Okay, I bit the bullet and purchased a monochromatic i-fire cam from unibrain. I chose it over a color camera for a few reasons: For one, the bayer filter applied to the CCD reduces the wavelength of something like two-thirds to three-fourths of the CCD against IR and near IR. I’m not saying it won’t be able to see the IR, I’m saying it just won’t see it as well. Secondly, because of the interpolation, it loses some of the resolution, from 480(b&w) lines to 400(color).

See more information on bayer filters [ here ]

Posted Jan 21, 08:31 PM by Dylan Moore ·

I <3 Google!

In the normal course of using Google Maps today, I discovered they replaced the typical white hand cursor with a black one… very cool.

Happy Martin Luther King Jr. Day
(Another graphic brought to you by the awesome Shepard Fairey!)

Posted Jan 19, 02:02 AM by Dylan Moore ·

URL pasteboard

Posted Jan 19, 01:06 AM by Dylan Moore ·

Frame Buffer Objects

A full example in one source file of how to render to a texture using an FBO, and then texturing a box with it. Works in Xcode, but uses GLUT so it will probably work in whatever you use. Click on read more for extra info…

Keywords: FBO, GLUT, Macintosh, Xcode, Platform agnostic, Render to a texture, example, tutorial.

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Posted Jan 16, 01:56 PM by Dylan Moore ·

Prewarp for optical distortion

Today’s investigations will include attempting some openCV camera rectification. If I can still get a decent image when it is all said and done, I may purchase a 2.1mm Wide Lens (No IR coating) for a unibrain camera in order to bring the camera closer to the screen and reduce my need for mirrors. Size testing today.
[ Link ]

I’m also waiting back to hear about educational pricing on point grey cameras. I had initial misgivings about them, but as it turned out, I had no idea what I was talking about!

Posted Jan 4, 01:01 AM by Dylan Moore ·

Imager Terms

I came across this great list of terminology that is useful when working with imagers—specifically CCDs. [Here] it is!

And the term that made me go googling: Binning-
Summing charge on the CCD and doing simple readout results in better noise performance than reading out several pixels and then summing them on the computer memory. This is because each act of reading out contributes to the noise.
There are two main variants of the binning process: vertical binning and horizontal binning. In addition there are several binning patterns that tailor the main binning variants to typical application usage. These are Full Vertical Binning, Single Track and Multi Track.

Other cool terms I learned about in my hunt-
Charge traps, Etaloning, Single-Track ..

One of my favorites is Cosmic rays (which I’ve long blamed for compiler errors)-
Very high energy particles from space enter the earth’s atmosphere and produce a shower of further high energy particles. When one of these particles passes through the CCD it will appear as a spike up to several handred counts. There are on average 1 event per 10 sec’s a sea level (This will vary with location).

Posted Jan 4, 12:47 AM by Dylan Moore ·

Sparkfun ( =

Above: 20 Channel GPS unit, a ceramic antenna, an arduino mini pro, an LNA for the GPS, two kinds of microSD card fixtures, an 860 mAH rechargeable LiPo battery, and an avago color sensor— The key ingredients in my thesis hardware.

Posted Dec 18, 08:54 AM by Dylan Moore ·

Ted Talk

For reference for my Thesis class:

Also, the Joys of the NUI group and tBeta. I can’t wait to start working with their core community group to develop the software further…

tbeta preview from ~ on Vimeo.

Posted Dec 18, 08:49 AM by Dylan Moore ·

NVidia Shaders: Ambient Occlusion & 16bit FrameBuffer blending


Posted Dec 9, 06:41 AM by Dylan Moore ·

NetCat TUIO with tBeta

nc -v -l -n -u -p 3333
get your stream on.

protocol notes:
[ TUIO ]
[ OSC ]

Posted Dec 2, 08:17 AM by Dylan Moore ·

IKEA to the rescue?

The main table area:


combined with these legs:


I’m using a 36” diagonal, which means I need 28.8×21.6.
This table is 47.25×23.625, giving me
9.1” clearance on the side edges and
1.0125 (Okay, a little over an inch) clearance on the top/bottom edges.

I’m most concerned about the strength of that inch… but it can be reinforced on the underside by a number of things. The table area is paper-filled, and thus might not be highest strength quality. It would only support half of my weight if I sat on it, in it’s un-altered condition. So I’m thinking that stripping away 26.1 of its 23.625 inches might considerably weaken it, or at least cause it to flex. Solid core tabletop would be ideal. Therefore, I’ll do some pricing at the ‘depot.

These adjustable legs are kinda nice, but again, it would be better to build something that has a place for the projector to slide in, and the mirror, and the camera. They go between 1.96’ to 2.947’. That adjustable feature is a win.

The budget for this is 20$ (top) + 60$ (four legs)=
80 bucks plus tax.

Can I find something better at a comparable price?

->TO DO: Home depot run. Price 10mm acrylic.

Posted Dec 2, 05:57 AM by Dylan Moore ·

ACM Digital Library

I’ve finally registered with ACM and it’s digital library. My goal will be to read a few articles and papers per week. Let’s see how well that goes! I’ll probably list papers that I find most interesting, or authors I’ve gotten to see speak at SIGGRAPH. I’m already a big fan of Pascal Müler’s work, as well as Wimot Li. [Here]

If you haven’t paid your small fee to get full access to the library, I suggest you do so immediately. It’s got a lot —a LOT— of great research.

ACM Digital Library

Posted Nov 30, 01:46 PM by Dylan Moore ·

Arduino I2C

First of all: Do not use Wiring. It, while well intentioned, does not do what it should. I have appropriated a chunk of code from the avrlibc library (

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Posted Nov 23, 06:02 AM by Dylan Moore ·