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Wrong FOV on iPad 4

October 6, 2014 - 6:15am #1

Vuforia SDK Version: Unity 3.0.9.2 -
Description with steps to reproduce:

We are building an augmented app, in which some real-world Objects (a city) are precicely overlayed by some virtual content. We recently upgraded to Vuforia 3.0.9.2. Now everything worked fine when running the App on Ipad air, however on Ipad 4 the virtual objects do not match up perfectly (the farer away from the center/the marker, the worse). It seems like the vuforia camera is using a wrong Field of View, so that everything gets "distorted".

It's kind of hard to see the effect without a detailed real-life Scene on which the augmented stuff is projected, however it can be seen by taking a mid-sized cardboard box, measure it and recreate it in Unity and place an Image-Marker on the front. Now in Ipad Air the virtual Cube should somehow cover the real box, where on ipad 4 it does not align properly. Unfortunately i do not have the real-world city right here, but i made a demo project as described above, and although it does not align perfectly and is just a very rough setup, you can see the difference Ipad air/Ipad 4. I don't have any other stuff in the scene, just the cube and the Vuforia Plugin. 

 

"Correct" Ipad Air:

IMG]http://i58.tinypic.com/2w4n0xh.png[/IMG]

 

"Bad" Ipad 4:

 

 

By downgrading to an older Unity Version and Vuforia 2.8 everything was back to normal again.

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Development OS (Mac OS X, Windows, Linux): Mac OSX -
Mobile OS and Version: IOS 7.1 -
Mobile Device Manufacturer and Model name: Ipad air/Ipad 4 -
Do the Vuforia Sample Applications show the same behavior?:

Wrong FOV on iPad 4

October 6, 2014 - 12:13pm #2
Topic locked