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What is the maximun limit of trackables?

December 2, 2011 - 3:34am #1

I try to put as many trackable image target objects as possible in a scene, because I am experimenting some possibility to build a platform on top of QCAR.
I made a scene fill with 48 image targets, each augment a 2 triangles plane with the target image on it. The scene runs well on my EVO3d and Apple iPod touch 4.
But it stop responding after entering the scene on my HD2(snapdragon s1 with 448 mb ram). The camera live feed just freeze at start.
In case of my HD2 which running android 2.2 on sd card, what make it stop responding? not enough ram or just the snapdragon s1 is too slow to process 48 image targets?

Re: What is the maximun limit of trackables?

December 28, 2011 - 1:53pm #8

There isn't a hard limit, but 50 targets per dataset is a reasonable starting point.

- Kim

Re: What is the maximun limit of trackables?

December 27, 2011 - 3:09pm #7

Hi everyone,

I read this thread because I'm interested in knowing the maximum number of trackables per dataset. I'm working on an iOS app, but i'm worried about scalability. I would like to know at what number of trackables per dataset does the image recognition algorithm becomes significantly time-consuming, to the point where it would affect the performance of the app.

Thanks in advance,

Hazem

Re: What is the maximun limit of trackables?

December 7, 2011 - 7:40pm #6

hi Him,

Thanks for the reply,we will check the new sdk and then let you know

Regards
Thilag.

Re: What is the maximun limit of trackables?

December 7, 2011 - 11:14am #5

Are you sure all of your trackables have names that are 10 characters or less?

You may want to try using the new 1.5 beta release (available at http://ar.qualcomm.com). With this release you can break your trackables into multiple datasets that you can activate separately. This might help with projects that use a large number of trackables.

- Kim

Re: What is the maximun limit of trackables?

December 5, 2011 - 8:48pm #4

hi
I am also facing same problem, when i putting 50 images as a tractable images that time camera freeze. why can anyone help me for this. my trackable name is like image1, image2

Regards
Thilag.

Re: What is the maximun limit of trackables?

December 4, 2011 - 8:48pm #3

Rename the trackables fixed the problem. Thx!

Re: What is the maximun limit of trackables?

December 3, 2011 - 12:21pm #2

I believe that device should work, even under these conditions. This might be an instance of a rare bug we've seen on a few devices. Does the app freeze after 2 or 3 seconds of execution? That is, you see the live camera for a couple seconds before the camera freezes and the app becomes unresponsive?

If so, one possible fix is renaming all your trackables in the TMS to be 10 characters or less. Please give this a try and let us know the results.

Thanks,

- Kim

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