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Accuracy of pose information

January 17, 2014 - 7:51am #1

Hey guys,

I know Vuforia returns a poes matrix once the marker is found. How accurate is this pose? For instance, if a marker is moved between two locations, could I theoretically calculate the distance moved? Using matrix math, pose matrix at B - pose matrix at A to get translation and rotation? 

Is there any sample out there? 

Cheers!

Accuracy of pose information

January 20, 2014 - 4:53am #4

The main question for me is whether the pose information is accurate enough for tracking?

You will need to try this out for yourself, but in general Vuforia is highly regarded for its tracking accuracy.

 

N

Accuracy of pose information

January 17, 2014 - 9:09pm #3

Thanks Nalin. The idea that I'm trying to implement won't allow two simultaneous targets. This is a movable object (in two planes) so will have two cameras (one for each plane). Calibrate one position as the origin and measure the difference between that and the final position to get the result. 

The main question for me is whether the pose information is accurate enough for tracking?

Accuracy of pose information

January 17, 2014 - 8:24am #2

A better example might be the use of World Center mode in Unity, where the camera is set as the center.  This way you could have two simultaneous targets, each returning their own pose matrix, which ought to be sufficient to enable you to work out the distance between them.

Note that each target should have consistent units as set up in the Target Manager, and that these are the units of distance that qualifies any result you might get.

 

N

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