Hi annfuste,

I tried Esnho's code too and it works well (I'm impressed and appreciative of the effort) but there's a initial drift of the 3D object. Did you encounter similar behaviour?

How about the rest?

Best regards,
Benjamin

Hi,

I'm trying the code from Esnho, but it seems that latest Vuoforia release breaks something and I can't get the transform of the created anchor.

Have anyone made any more progress so far?

I'm working with Unity 2018.1b13 and Vuforia 7.1.31

Thanks in advance,

Alfred

+1 request for help on this.

Hey guys! Have any of you managed to get this going? Could anyone maybe share a unity project / working code samples?

I would be insanely grateful.

Thanks!

annafuste wrote:

I guess it makes a difference here depending on if you are using ARCore or ARKit. I have the exact same code for both but it will only work on iOS.

This is currently expected behavior as Vufoira 7.0 / 7.1 does not support ARCore yet.

Hi Everyone,

We wanted to provide the community some updates on this thread. We understand this topic is something our developers are very passionate about. We have some updates that we'd like to share with the community.

The community outlined some use-cases looking to bridge Image Targets and Ground Plane.  Some time ago, I provided some alternative Unity components to aid in these requests in a Gist. While this solved some of the use-cases, it did not cover all the cases. I am currently working on an another set of components to cover the remaining cases. I'll update this thread once I have something to share. I’d like to point out that this approach does not require any updates to the Vuforia Engine – it simply leverages the Vuforia Engine in different ways.

There was also some confusion in regards to Vuforia's support for ARCore. As of Vuforia 7.0/7.1 - Vuforia does not  leverage ARCore.  In Vuforia 7.0,/7.1, developers targeting Android use Vuforia's own VIO instead of ARCore. As a result, developers may have of seen instability issues due to lack of ARCore. Internal support for ARCore is scheduled to be released in the next major version of Vuforia. 

Last year we announced Vuforia Fusion. We outlined a long-term vision of how Vuforia would work with platform tech such as ARKit and ARCore.  When we added support for ARKit, we took our first step towards Vuforia Fusion.  In the next release of Vuforia, we are taking another big step towards Vuforia Fusion. Developers can expect to see changes related to Extended Tracking and Device Tracking. These changes will allow Vuforia targets to leverage ARKit and ARCore as necessary. For instance, Vuforia will use ARKit/ARCore for targets that are "extended tracking". 

These upcoming changes should cover a lot of the use-cases outlined in this thread.

The team has been working hard trying to get all this functionality into the next release. We cannot wait to see the awesome experiences that you all build with the next version of Vuforia.

Thank you!

vdasilva wrote:

[...] We cannot wait to see the awesome experiences that you all build with the next version of Vuforia.

Thank you!

Thank you, sounds very good and I'm looking forward for that... but can you give us an idea, at what time this will be?

Regards

Thies

Thanks for the update. Definitely something to look forward to!. I think it'll be best if the function can be applied to all targets (Image, Model, Cylinder etc...). I believed that many people will start to ask for this because if it works well, it'll unlock all kinds of possibilities :).

Thanks vdasilva!

Hi vdasilva,

Thankyou for the much needed update.  

Note: I wrote a long post here but I've deleted it.  I'm pleased to say I've got image targets and groundplane working nicely together in 2018.1f2. What took me hours and hours of pain and hair pulling on an older version of Unity/Vuforia now seems to work pretty easily. Nuff said I guess.

Cheers

gemelo wrote:

but can you give us an idea, at what time this will be?

We're looking to get it into our summer release, but no promises yet!

scott_a_ashton wrote:

Hi vdasilva,

Thankyou for the much needed update.  

Note: I wrote a long post here but I've deleted it.  I'm pleased to say I've got image targets and groundplane working nicely together in 2018.1f2. What took me hours and hours of pain and hair pulling on an older version of Unity/Vuforia now seems to work pretty easily. Nuff said I guess.

Cheers

If you share your solution with the community, we'll send you some swag! Ping me if you do!

Hi,

I couldn't find any solution to this.

I have scenes where the world centers need to be FIRST TARGET and DEVICE TRACKING.

So, it's all mixed, but the FIRST TARGET behavior gets replaced with DEVICE TRACKING.

Would you please tell us how you fixed this issue? 

Thanks.

So, what is the current status on this? Are any of the below solutions viable or is the functionality coming to Vuforia soon?

I had to abandon Vuforia and use ARKit throught the Unity plugin. Works really nice. I recommend this approach. And with ARKit 1.5 and 2 I don't see anything in Vuforia that makes me wanna come back. 

augminded wrote:

I had to abandon Vuforia and use ARKit throught the Unity plugin. Works really nice. I recommend this approach. And with ARKit 1.5 and 2 I don't see anything in Vuforia that makes me wanna come back. 

Finding myself doing the same, it's a bit of an oversight on Vuforia's part - we want to include ground plane in a different scene to a scene with the marker tracking and the two do not work together in the same app at all because the ground plane requires a different device tracking mode to marker tracking.

Hey Folks,

The latest version of Vuforia (7.2) has made a lot of improvements in the area of using ARKit/ARCore for Extended Tracking (through the Positional Device Tracker).

If I understood the use cases mentioned on this thread, developers wanted to initiate an experience using an Image Target and keep it anchored in Place using ARKit. This functionality should work out of the box. Please refer to this doc for more info: https://library.vuforia.com/content/vuforia-library/en/articles/Training/Extended-Tracking.html

Please keep the feedback coming!

Vinny

I don’t think the current solution is satisfactory.

1. Image target is detected 

2. Extended tracking kicks in 

3. Image target is detected again AND everything is repositioned using the image target which provides a JITTERY experience 

please advise

Did you find a solution to this?

For this flow the new updates don't help:

1. Detect image target

2. Start extended tracking

3. Whenever image target is detected the user will get a jittery experience  (as the tracking gets re-anchored)

Ideally the image target would only initialize the extended tracking and after that not be involved again.

any ideas?

@Medabit any input on this?

Hello @emorling,

Difficult to understand the issue with the provided description. If a video of the behavior can be provided, then it will give me an opportunity to analyze and replicate.

Thanks,

Vuforia Engine Support

Hi. I also need to somehow be able to combine Image targets and Ground plane. Is this something that Vuforia now is supporting? I need to re-position content placed on ground plane whenever image target is visible. At least it seems to be really difficult, since it seems that ground plane and image targets have their own coordinate space - the Image targets origin seems to be in another place than the GP:s origin. 

Has anyone been able to figure out how to get Image target´s position on ground plane's coordinate system?

Would it be possible to get an answer from Vuforia? This thread has 20000+ views, so there seems to be a high demand for this. Please confirm if it at all possible to combine ground plane with image targets in a way, that you could position AR content with image targets on the ground plane? 

To me it seems that they do not operate in the same coordinate system - when an IT is found, it is positioned at (0,0,0) but simply setting the position of the AR content to the same point does place it on the target and keep the perspective correct. 

It would be great if you could explain the relation between IT and GP spaces.

None of the solutions in this thread gave the desired result (mostly because of the outdated code)

Hi @Jarileon,

We have a couple of different approaches to this sort of functionality - and the approach you use is going to be dependent on your use-case.

Use Case 1: You want your experience to start from an Image, but you want the content to feel anchored to the environment.

Approach: Use your Image target as expected, be sure to use Extended Tracking by Enabling Device Tracker in Vuforia Engine 7.2 or later

Use Case 2: You want the user to setup a Ground Plane and you want the content from an Image Target to move onto the Ground Plane. 

Approach: Allow the user to setup the Ground Plane and once the Image Target is detected, then you can have the content move between the two by GameObject parenting. The Coordinate systems should be the same, just be sure to setup Device Tracking in Vuforia Engine 7.2 - World Origin should remain fixed in space

Please let us know if you have a different use case.

@emorling

There are lots of reasons why you could be having Jitter - please provide more information so we can try to guide you to a solution.

What device are you using? are you using ARKit/ARCore? How big is your Image Target? As mentioned by medabit, a video would be really helpful for us to diagnose any potential problems.

Hi @vdasilva

Is it possible to get an example of the "usecase 2"? 

I would love to scan an Imagetarget and then choose where to put the object using groundplane but i simply cant figure out how to do it. 

I hope you can help me.

Hi @vdasilva

Is it possible to get an example of the "usecase 2"? 

I would love to scan an Imagetarget and then choose where to put the object using groundplane but i simply cant figure out how to do it. 

I hope you can help me.

Hello，I want to use Ground Plane and Image Targets，First，I use  Ground Plane,When I switch to Image Target,The identified model is shake ,Why is that,Thank you all.

Hi @vdasilva

I would also like to scan an image target and anchor it to the ground plane. Right now, it seems as though the image target content and the Ground Plane content are on two complete different planes. When I hold the phone about 2 feet away from image target, the GP content appears on top of the IT content. I would like for them both to be on the same plane so that they can interact with one another. Could you provide a more detailed explanation?

@vdasilva I am interested in use case 2. I have attempted to make the image target a child of the ground plane stage, but this did not work. Attempting to map the content from the image target(s) to the user defined ground plane. Thanks.

For fixed world origin - do you mean first target or device? 

Hi, sorry to reactivate an old thread but did this ever get fixed?

Wondering the same....

Has anybody figured out how to set this up?

Hi, I need an object to be attached to the ground once a target is recognized, but I still need the image target to be functional, because I'll have objects attached to the ground and objects attached to the target.

Is this possible?