Rapid Prototyping

Free graphics

I am a programmer at core and, I guess like most programmers, I am not a very good or proficient artist (even if I did some web design in Photoshop or Flash, games are different). Therefore, when I want to do some game programming, I always struggle to have something to display and I always […]

Pathfinding shouldn’t care about the map

Back to posting on the blog… after a long while. Lack of time is the only issue that stops me from publishing the piling up stuff I want to share. But, as I am wrapping up the last couple of courses for my Master’s degree right now I hope to find a little bit of […]

Transaction Indexer

When you do web mining, you usually take into account several documents (or transactions) and try to find connections between words in these documents. A practical example of this is finding connected products in people’s shopping carts, used by Amazon for example to suggest new products. To achieve this, Association rules are extracted from the […]

Images list in xEdit2D

Introducing XEdit2D

  For some XNA experiments of mine, I wanted to generate the XML asset files automatically and so I started exploring different possibilities. After searching for a while, both paid solutions like TorqueX 2D or freely available ones, I was quite unhappy with the solutions out there. So, I decided to start working on my […]


My first object tracker

In December I completed my first simple object tracker as a project for the “Intelligent Multimedia Systems” course. It wasn’t a very advanced one but it is based on very simple ideas and technologies and very effective given the right environment. The tracker was a mean-shift one, which, as opposed to a brute-force tracker does […]

.Net exception list

I’ve been looking for a complete list of all possible .Net exceptions because I like to throw the appropriate exception type when needed. MSDN doesn’t offer anything like that but I found a blog post on Mike Vallotton’s blog that was exactly what I was looking for. Here it is: .Net exceptions (all of them).

Sphere with random test images

3D sphere from photos

I just presented my demo at the end of last week so now I have some more time to write about it. As I was saying, the purpose was building a multi-touch interface using infrared lights. I also needed to have something to demonstrate on. After thinking about and talking to my coordinator, Frank, the […]

Impressive photography

While looking for images for my new “Query by example” project, I came across what I believe to be very nice photography work by Li Wei. Enjoy more of it here: http://www.liweiart.com/english

PHP script to generate numbered images

When I need small utilities or helping scripts I turn to a scripting language such as PHP not only because it is very easy to write quick code with it but also because it doesn’t need anything else besides a text file to run from command line. This was the case a few days ago […]

Schema of 2 LEDs and a resistor. I connected 8 of these groups in parallel for the infrared light.

Multitouch 2 – Infrared light

For the project mentioned before I needed an infrared light to be able to reflect light off the fingers to the WiiMote camera. I started building this myself but being my first electronics job ever I needed some help. After reading and asking around for tips, the circuit I needed to create looked something like […]