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Create a single color and contiguous area marker

May 13, 2014 - 1:11am #1

Hello,

I need to create a marker that must be single color an contiguous (I don't have to print it, but create it physically to use in an inlay).

I've made some tests uploading the test images in attachment to the target manager, and test6 gets a 5 star rating, while test10 get 2 stars (the other designs gets 3 and 4 stars rating).

I then simply printed them (size 4cm) and the recognition performs accordingly.

My problem is that test10 would be much easier to realize, so I'd like to create the most simple tracker while still getting a 5 star rating.
I understand all the features stuff, and the fact that Vuforia tracks an image... but I wonder why many other augmented reality toolkit I've tested can detect very simple markers, even simpler than test10.

If a frame marker image is uploaded to the target manager, it gets a very poor rating, still is detected very well. Does frame marker recognition and image target recognition use different algorithms?

Any suggestion on which tricks to use to create a better tracker, or on how to configure Vuforia to recognize a very simple tracker.

Thanks,
Mattia

 

 

 

 

AttachmentSize
Image icon test10_scaled.jpg6.91 KB
Image icon test6_scaled.jpg16.58 KB
Image icon test9_scaled.jpg8.61 KB
Image icon test7_scaled.jpg11.76 KB

Create a single color and contiguous area marker

May 16, 2014 - 2:45am #2

Does frame marker recognition and image target recognition use different algorithms?

They are two different features of Vuforia, so, yes, certainly Vuforia will handle them differently.

Also, by looking at the images you have attached, I can confirm that an image like test10.jpg is not an ideal candidate as Image target.

 

Any suggestion on which tricks to use to create a better tracker, or on how to configure Vuforia to recognize a very simple tracker.

There is no magic way to "configure" Vuforia to "suddenly" recognize a "simple tracker";   the star rating is provided exactly for this reason, i.e. so that you known in advance what the expected detection and tracking performance could be for that target; 

so, if the rating is low (e.g. 1 or 2 stars), one "trick" could be to add a few little extra details to the image (e.g. adding some small details over the white background), while preserving the main / core image (the black part in the center).

 

See also:

https://developer.vuforia.com/forum/faq/how-can-i-improve-detection-and-tracking-stability

 

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