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 […]

Frame0085

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 […]

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 […]

Multitouch interface using WiiMote

Recently I’ve read about people that used the WiiMote in unconventional ways by including the great infrared camera in the WiiMote to track infrared signals. The most famous of them is Johnny Chung Lee (his blog is here: http://procrastineering.blogspot.com/) that used it to build a multitouch interface, head tracking or a virtual whiteboard (see projects […]