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Mirror Camera Bug

By warren on Thu, 03/12/2015 - 13:56

I just bought an ICOO DVPRO II tablet from china to test my app on, The tablet works fine in every respect apart from when i launch ANY app, be it my own or by another third part, such as AR Hoops etc.... the camera is mirrored left to right.

When i launch the camera its the right way round so its coming from Vuforia.

Im concerned that Vuforia has not been tested on low level android tablets that are flooding the Market.

 

Steps Taken:I thought it may be because i was testing apps that use vuforia 1.5, So i downloaded and installed the APK for all the Vuforia 2 test apps.The same thing happened, the camera is mirrored.

 

 

 

AlessandroB

Thu, 02/14/2013 - 13:36

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Hi, just for confirmation:

can Vuforia detect/track the targets despite the mirrored image, or it does not track ?

 

 

If i place a mirror next to the Print out target it works with the reflection.

ive created a small video to show you:
http://www.youtube.com/watch?v=AweXWcNSB5Q&list=UU8bfzhZANw1QvXisCg4xWIg&index=1

 

 

Hi, thanks for the video ! 

This is precisely what I need to know (although the video was not required, but thanks anyway).

So, yes, we have seen a similar report from another developer; so, as you say, it seems that a few tablets are affected by this mirroring issue;

there is a large volume of tablets coming out of this one factory under different 'brands' with the same camera,

they are about to the flood the market.

 

Sure. I will get back to you; however at the moment I cannot tell whether this is something that can be easily fixed or workarounded.

Hi, just a quick update: the issue is under investigation by the SDK team and a solution for it is expected in the future; however at the moment I cannot be more precise on the timeline for this.

Has there been any advance with this issue? It would be enough a configuration option that the user could change in realtime that flipped the camera buffer BEFORE the tracking stage, so app developers could make a GUI button for the user to change that.

Thanks for your work. 

Has there been a fix for this inverion issue on low lost tablets?? it is really critical to our solution as we have bunch of tablets with same problem.

Hi mbabbar,

could you provide a list of affected devices that you are aware of, with exact model name/number for each ?

 

Hi AlessandroB,

The tab we are using is AOpen PTT9726DC model number, ICS 4.0.4, Kernal 3.0.8

I found a similar thread

https://developer.vuforia.com/forum/android/low-costs-tabletsphones-camera-view-inverted-problem

Hi AlessandroB,

The tab we are using is AOpen PTT9726DC model number, ICS 4.0.4, Kernal 3.0.8

I found a similar thread

https://developer.vuforia.com/forum/android/low-costs-tabletsphones-camera-view-inverted-problem

Thanks for the details on the device. I've added it to the list.

Is the issue occurring with the front or back camera ?

 

 

Yes on both front and back camera. Is there any workaround to rotate the camera when it is started. Any kind of hack would really help.

 

Thanks,

Mukund

You can tell Vuforia to mirror the view during camera initialization; see the fnction configureVideoBackground() in ImageTargets.cpp;

there you can set the mReflection flag to ON / OFF. See also the API reference:

I have already tried the reflection flag.. It only fixes the mirror image from left to right, but the camera view still remains upside down.

Just a clarification: do you see the image upside-down when holding the device in portriat mode, or in landscape ?