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Anchoring AR objects relative to the image marker

November 24, 2015 - 5:34am #1

Good morning everybody,

I am working on a project where I am trying to use Unity, Vurforia, and a webcam or cellphone to create AR "callouts" on top of an architectural model that I have made. I pulled some images from the Arcitectural model and uploaded them for use as image targets. When the camera identifies a target on the wall, a text block then appears to explain an element of the model. The webcam or cellphone that Im using will be affixed to a pole, as I dont plan to move around the model- just pan up & down the scene. My problem is that the callouts move away from the area that they are intended to explain, as soon as I pan around the camera.  I would like to have the callouts stay put as the camera pans. I dont know if this is because I am using targets on a wall, and messing up the whole camera-center concept, or if it's just because I'm a total noob.  It seems like there might be some simple fix- but, of course, that's something a total noob would say. Anyhow, Im attaching a picture of the model and the callout (blue) just so you can have a better understanding of what Im trying to accomplish. Thanks for any help you can offer!

AttachmentSize
Image icon RealModel.jpg1.07 MB
Image icon Callout.jpg860.01 KB

Anchoring AR objects relative to the image marker

December 7, 2015 - 10:12am #3

Thanks so much for your response. I'll try that right away. I appriciate it.

 

Anchoring AR objects relative to the image marker

December 2, 2015 - 3:25pm #2

Is the "callout" attached to the "stones" target on the ground? Augmentation position and rotation will be in relation to it's parent Trackable. If you want the "callouts" to be locked to various surfaces in the model, you'll need to use those as targets. If you want "callouts" to move with camera, then you can move them into camera space. See the Books sample app for an example of that.

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