It stands for “quadrilateral tracker”, little pet project I have been sporadically working on since october. I should have given it more love, but I didn’t want this post to drag into next year, so here goes “version 0.9”:
After December 7th, qtrack is the only free, as in “free beer”, flash 3D AR tracker. Curious why? There are many reasons for that. For one, most of its code is already available for free elsewhere on the web. But another, more important reason is that I just don’t see enough flash AR around, and setting this thing free is my modest contribution to spark some more creativity in the field :) I mean, when was the last time you actually saw flash AR game, huh?..
Any way, back to qtrack – it works similarly to famous FLARToolKit, except it is not that advanced and currently implements only single instance of single quad marker tracking. On the bright side, it is less restrictive regarding marker shape – all these markers could be tracked with qtrack, for example:
So, this is something you can try today. Zip file comes with two simple examples for Away Lite and Alternativa engines, and soon short video tutorial will follow. In January I will try to further improve qtrack in the areas where it currently have problems, and release stable version 1.0.
As I said, most of this thing is based on free code snippets published or inspired by various people. This includes blob detection (Tomek), homography (Zeh), marching squares (Sakri), Otsu thresholding (Andrew), automatic thresholding (some unknown guy), brilliant camera activity trick (Deepanjan). Even my complex numbers experiment found its way into this – I used it for pose estimation. So big thanks goes to all these people who have posted right things at right time for me to come across – without you qtrack would never happen!