Unity AR Foundation - AR Image Tracking Tutorial

A short #tutorial on how to get started with #Unity #AR Foundation Image Tracking.
- AR-Foundation manual site
docs.unity3d.com/Packages/com...
- AR-Foundation samples github repository
github.com/Unity-Technologies...
00:00 Intro
00:55 Basic Setup
02:22 Setup ARFoundation
10:00 Testing
11:00 Image Tracking
13:50 Demo
14:40 Outro

[@nv7827]

Good informative tutorial... keep it up...

[@streamovie5601]

Thanks

[@user-wi9dp1gh9y]

Hello, I have been running into an error whenever I build this out to WebGL that says "a scripted object (script unkown or not yet loaded) has a different serialization layout when loading (Read52 bytes but expected 68 bytes) Did you #ifdef UNITY_EDITOR a section of your serialized properties in any of your scripts" any chance anyone here might know how to address that? I feel like I have followed the tutorial to a T

[@firedragongamestudio]

No WebGL possible with ARFoundation. Use Needle Engine instead.

[@abdulelahalghamdi2965]

Thanks, the instantiated object is moving, like drifting can you help me please

[@firedragongamestudio]

Try another marker image and check you lighting.

[@doomkiller2098]

Is it possible to somehow implement the movement of objects in the image?

[@firedragongamestudio]

Yes, just play an animation, when the image is scanned.

[@Yo-bh5vm]

Is there a way to enable record button in app once it is created?

[@firedragongamestudio]

You mean for screen recording? Well, you'll have to do this yourself then.

[@ashwanthka3592]

Bro....I need to place the image in a particular spot were my 3d house model should overlay on my current house....I wanna know how to scale and move the 3d object with respect to the image

[@firedragongamestudio]

The size of the marker let's you calculate the scale needed for the house model. And you can choose the position of the marker + offset of the house model. Playing around with some numbers first, will definitely yield good results :)

[@ashwanthka3592]

@@firedragongamestudio Thanks😁

[@HamidehAzimi-yy4tx]

Hi. I followed the tutorial( until it gets to the script) when the camera sees the image, it creates the cube but the cube is not on the image. the cube is at the zero postion of when the app started running.

[@firedragongamestudio]

seems like the cube or the trackable has some kind of offset.

[@HamidehAzimi-yy4tx]

@@firedragongamestudio No it is not about the object position, it is about the camera position. wherever I open the app and in any direction, the cube will appear at that position and that direction

[@karanoli4914]

Hey! Great tutorial, helped me a lot! Could you please tell me how to I rotate the Imported model??

[@firedragongamestudio]

In this case, every tracked image has the same prefab. So you can either change the transform the child object of the prefab, or add it as child to the trackables object. The reference ListAllImages() at 12:00 should help you query the right trackable for your imported model :)

[@karanoli4914]

​@@firedragongamestudioI'm very new to unity bro.. so sorry but can you explain in detail.. it'd really mean a lot

[@firedragongamestudio]

@@karanoli4914 it's hard via YT comments, but I'll try: When looping through the trackables, you'll get transforms of your tracked images. The selected transform should be the parent of your object. So in order to rotate your imported model, you'll have to instantiate it, add it as child object to the transform of the tracked image and the rotate the object itself.

[@ajdev-od2dv]

it is possible by looping through eventArgs.added too, I will send a code for that by the way, your tutorial was great and helped a lot, thanks

[@ajdev-od2dv]

in case anyone need wants the same functionality,try like this: void OnChanged(ARTrackedImagesChangedEventArgs eventArgs) { foreach (var newImage in eventArgs.added) {//image is detected.in ar simulator it may get called in instantly without looking at image(ar simulator bug,but ok in mobile) print($"a new detectable added(detected):{newImage.referenceImage.name}");//"two" ( if image key is two in definitions) if (newImage.referenceImage.name == "two") { print("test map detected!"); //activeModel = Instantiate(testPrefab, newImage.transform.position, Quaternion.identity, newImage.transform);//custom rotation=Quaternion.identity } } }

[@noahjames9457]

there's no XR Origin (Mobile AR) option.

[@firedragongamestudio]

Newer version is on Github. Link is in the description box.

[@ESnet3D]

Nice - könnte man so etwas auch rein webbasiert umsetzen?

[@firedragongamestudio]

Ja klar, gibt eh auch schon ein Tutorial dazu - kzbin.info/www/bejne/l6rQi4yun7ljd68si=fN7j6I_Jw8_KFpsF

[@firedragongamestudio]

oder wenn du lieber einen "Unity like" Workflow nehmen magst, kannst du Needle Engine verwenden - kzbin.info/www/bejne/h4rHY4uGgZWKjZIsi=2Ha305irjCFgWTlV

[@rajujadhav6102]

Very good tutorial, Could you please also provide video on Image marker based Indoor Navigation Or give me some references.

[@firedragongamestudio]

I made a full tutorial series about this here: kzbin.info/www/bejne/nKard6WDj5mkldU You'll just have to replace the QR codes with image markers :)

[@samuel.9]

The tutorial is made with ar session origin which is deprecated, is it the same with xr origin? just change to xr origin but same steps?@@firedragongamestudio

[@dangerClose-ij4fj]

I tested it and it worked very nicely thanks bro love it. I actually want to know how can we create virtual buttons through it like we create through vuforia packgae can you help in this regards.

[@firedragongamestudio]

you can use world space ui and buttons for that.

[@MrCortland12]

Can you do AR Face Tracking next?

[@firedragongamestudio]

Put it on my list. The Unity docs and Unity Learn are pretty good at this, so maybe look into that at first.

[@nimamasila]

Its so f stupid, why does the tracked image only worked when it placed inside simulate environment?

[@firedragongamestudio]

good point. the simulator does not use "real" image tracking. so it may be possible that your image is not suitable for image tracking at all. doesn't change the fact, that the simulation should basically give the user feedback for the tracked image (e.g. tracking quality), but I hope this helps.

[@romannemchuk925]

lost 15 minutes of my life

[@firedragongamestudio]

could be worse :P