ofxARToolKitPlus detection problem with HD camera

Hello,

I just bought a Logitech c920 camera, capable of resolution up to 1920x1080. It is working out of the box with OF, excellent.

But I have some kind of weird bug while using it with ofxARToolKitPlus with resolutions having width more than 1024, like 1280x720 or 1920x1080:

When running the example, the marker detection is working fine. But only until I put the marker on one side of the screen, at a x position of about 960 pixels and more.
At this moment the corners of the markers that are above this x position seems to be shifted all the way to the other side of the screen.
I added a picture where it shows the corners going away when I move the marker toward the problematic area.

I don’t know if it has to do with the fact that I do not have the Matlab calibration file of this precise camera…But it is working in many other resolutions so I am a bit confused.

Does this has happen to someone or something similar by any chance?

Cheers!

![](http://forum.openframeworks.cc/uploads/default/2821/ofxARToolKitPlus problem.jpg)

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