I have been trying to build an AR application with the screen record feature using Vuforia SDK but its a little complicated for me to get it working. Requesting for a step by step guidance on that kindly.
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How to screen record in an AR application Using Vuforia SDK.
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ARFoundation Image Tracking quality
So I've seen a few questions about this but not a definitive answer.
When using an Image Target with ARKit or ARCore, is there a way to analyse the image to gauge whether it is a good tracker or not?
I know there's a way to detect *if* an image target is detected but this tells you nothing of the quality.
I previously used Vuforia which gives you a rating and shows you the tracking data so you can see where track points are and where you could improve it. Is there anything similar for ARFoundation?
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Vuforia Area Target Tracking Starus RELOCALIZING
Hi,
![alt text][1]
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I develop an **AR navigation** [Unity + Vuforia Engine] in an areas that contain around 14 racks in total. Each racks have same structure.
For each sides, got columns and rows that we have colored with random colors combination like ***Figure 1*** to help AR recognize sides for a particular racks.
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I’m facing Area Target tracking problem which Vuforia **ObserverBehaviour -> TargetStatus frequently return RELOCALIZING** ( tracking system is currently relocalizing) status if:
1. User start to move toward end of racks
2. User need to go to (Rack 2, Side 3) from behind (Rack 1, Side 1) to switch rack & side
3. User too close to particular compartment in rack
How do I solve/improve tracking to avoid the **RELOCALIZING** while user use AR navigation app?
Thanks.
[1]: /storage/temp/200891-annotation-2022-10-18-164250.png
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Help or consulting to develop a simple AR game
Dear All,
I am a student and I need to develop a simple AR application for android that exploits just 2D images tracking feature.
It should be an AR "escape room" around my city where each step of the game is activated or solved by the user by tracking a certain 2D element with his device ( like a painting inside a church etc. ).
The details of the project are already set, I am looking for (even paid) help, support or suggestions to develop the game (e.g. how to perform some tasks from a practical point of view, how to structure the game, how to choose between Vuforia and AR Foundation, etc.).
I am really in a hurry since I have to graduate and it is really important.
Thanks in advance to anyone who can help.
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Access to the field "Image" of an Image Target game Object with Vuforia
Hi, I am running Vuforia Package in my Unity 3D project based on image tracking.
I was wondering how I can create an "empty" image target game object in my hierarchy and then have access to all its fields within a C# scripts attached to it. This would be in order to set the image file to be tracked within the code, and then change it at second step, always within the code
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Vuforia Cloud Recognition not able to track more than 1 target
I am using Vuforia Cloud Recognition and am successfully able to track one image target on the scene, however if I remove the first target from the scene, and add only a second image target, I am actually not able track and get this error:
Exception in callback: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> UnityEngine.MissingReferenceException: The object of type 'ImageTargetBehaviour' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
Any idea on what I can do to fix this and how I can track multiple targets successfully, 1 by 1 in a scene?
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Android back press button to quit the application
Hi, i am stuck implementing the back button press to quit the unity 3D ARCamera. I have created new C# script with code
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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Quit : MonoBehaviour
{
public void Update()
{
if (Application.platform == RuntimePlatform.Android)
{
if (Input.GetKeyUp(KeyCode.Escape))
{
//quit application on return button
Application.Quit();
return;
}
}
}
}
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I saw some old forum or answers from google telling that the script need to be add into ARCamera or any GameObject component. So i just follow their instruction but unfortunately the script is gone from the Inspector tab and also the GameObject missing from "hierarchy tab" after i export the Unity project into certain folder because i am working with Android Studio.
I am confused and i dont know what should i do to make the back button quits the Unity application :(
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Getting error:- Failed to create Vuforia engine: Vuforia driver library load error UnityEngine.Debug:LogError (object)
I have unity 2021.3.11f1 version on mac 10.14.6 mojave, I have installed vuforia package 10.11.3 for unity. I imported the vuforia engine package and the vuforia package for marker and also added the license key in the ARcamera "Vuforia Engine Configuration" and then clicked on play button I got the following error.
1- Failed to create Vuforia engine: Vuforia driver library load error UnityEngine.Debug:LogError (object)
2- Vuforia Engine initialization failed: INIT_VUFORIA_DRIVER_FAILED INIT VUFORIA DRIVER FAILED Failed to initialize Vuforia Engine.
I have even tried unity 2020.3.42f1 but still got the same error
Steps followed by me:-
1- I switched the platform to android in unity.
2- I imported vuforia engine package and marker vuforia package
3- Added the vuforia license
3- Then I clicked on play button in unity and got the error
a] Failed to create Vuforia engine: Vuforia driver library load error UnityEngine.Debug:LogError (object)
b]Vuforia Engine initialization failed: INIT_VUFORIA_DRIVER_FAILED INIT VUFORIA DRIVER FAILED Failed to initialize Vuforia Engine.
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Why AR objects are shaking on vuforia 5*-markers?
Hi, we build the app for the jewelry store where the AR object (the ring) is recognized when the ios app camera is pointed at the paper (and metal) marker we built in Vuforia. This is a 5* marker (which is considered to be a good quality according to Vuforia) that we place on the finger.
So what we have - we have a pretty fast recognition, BUT we have unpleasant shaking of the ring, that is being recognized. The closer we point the camera to the marker - the more shaking is seen.
The paper maker has a normal cylinder form. The lighting is always enough while testing, etc
Any ideas on why this shaking appears?
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Unity+Vuforia build to Android phone with no AR content show up,Unity+Vuforia Build to Android Phone not working
Hi. I have tried using Vuforia Engine in Unity2020.3.38f1 and Unity2021.3.17f1. The AR camera works fine in the play mode and it can successfully be built on my android phone. The app can be launched and the camera is working, but there isn't any AR content showing up on the screen.
I did this in the same setting last year with a previous version of Vuforia Engine and it worked fine. It didn't work since the Vuforia Engine was updated. Is it because something is wrong with the setting or the version is not paired?
Could anyone help me with this issue? Thanks.,I have tried using Vuforia Engine in Unity2020.3.38f1 and Unity2021.3.17f1. The AR camera works fine in the play mode and it can successfully be built on my android phone. The app can be launched and the camera is working, but there isn't any AR content showing up on the screen.
I did this in the same setting last year with a previous version of Vuforia Engine and it worked fine. It didn't work since the Vuforia Engine was updated. Is it because something is wrong with the setting or the version is not paired?
Could anyone help me with this issue? Thanks.
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,NullReferenceException: Object reference not set to an instance of an object MusicPlay.Update () (at Assets/script coding/MusicPlay.cs:30)
I have error this error in unity but don't have any error in the code NullReferenceException: Object reference not set to an instance of an object
MusicPlay.Update ()
this my code
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class MusicPlay : MonoBehaviour
{
// Start is called before the first frame update
public Slider volumeSlider;
public GameObject ObjectMusic;
private float MusicVol = 1f;
private AudioSource Audio;
private void Start()
{
ObjectMusic = GameObject.FindWithTag("backgroundmusic");
Audio = ObjectMusic.GetComponent();
//Set Volume
MusicVol = PlayerPrefs.GetFloat("volume");
Audio.volume = MusicVol;
volumeSlider.value = MusicVol;
}
private void Update()
{
Audio.volume = MusicVol;
PlayerPrefs.SetFloat("volume", MusicVol);
}
public void VolumeUpdater(float volume)
{
MusicVol = volume;
}
public void MusicReset()
{
PlayerPrefs.DeleteKey("volume");
Audio.volume = 1;
volumeSlider.value = 1;
}
}
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Vuforia Error on Android (after build) - Failed to create ImageTargetObserver: DATABASE_LOAD_ERROR
Hey everyone,
a few days back I had no Problem at all running my AR-App. It's a simple Image-Taget display of objects for Android working with Vuforia.
Now I get following log after I build and run it on a device:
03-02 11:49:41.802 10768 10792 I Unity : Vuforia Started
03-02 11:49:41.802 10768 10792 I Unity : Vuforia.Internal.Core.Engine:Start(Action)
03-02 11:49:41.802 10768 10792 I Unity : System.Reflection.RuntimeMethodInfo:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo)
03-02 11:49:41.802 10768 10792 I Unity : System.Delegate:DynamicInvokeImpl(Object[])
03-02 11:49:41.802 10768 10792 I Unity : Vuforia.Utility.ExtensionMethods.DelegateHelper:InvokeDelegate(Delegate, Object[])
03-02 11:49:41.802 10768 10792 I Unity : Vuforia.Utility.ExtensionMethods.DelegateHelper:InvokeWithExceptionHandling(Action`1, T)
03-02 11:49:41.802 10768 10792 I Unity : Vuforia.VuforiaBehaviour:Awake()
03-02 11:49:41.802 10768 10792 I Unity :
03-02 11:49:41.806 10768 10792 I Unity : Creating dataset: Vuforia/Barlach_Marker.xml/tracker01_junge
03-02 11:49:41.806 10768 10792 I Unity : Vuforia.ImageTargetBehaviour:CreateObserverFromDataset(IObserverFactory)
03-02 11:49:41.806 10768 10792 I Unity : System.Reflection.RuntimeMethodInfo:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo)
03-02 11:49:41.806 10768 10792 I Unity : System.Delegate:DynamicInvokeImpl(Object[])
03-02 11:49:41.806 10768 10792 I Unity : Vuforia.Utility.ExtensionMethods.DelegateHelper:InvokeDelegate(Delegate, Object[])
03-02 11:49:41.806 10768 10792 I Unity :
03-02 11:49:41.814 10768 10792 E Unity : Exception in callback: Failed to create ImageTargetObserver: DATABASE_LOAD_ERROR.
03-02 11:49:41.814 10768 10792 E Unity : Vuforia.Utility.ExtensionMethods.DelegateHelper:InvokeDelegate(Delegate, Object[])
03-02 11:49:41.814 10768 10792 E Unity :
03-02 11:49:41.836 10768 10792 I Unity : Target status: tracker01_junge NO_POSE -- NOT_OBSERVED
03-02 11:49:41.836 10768 10792 I Unity : DefaultObserverEventHandler:OnObserverStatusChanged(ObserverBehaviour, TargetStatus)
03-02 11:49:41.836 10768 10792 I Unity : DefaultObserverEventHandler:Start()
In there you can find the error `Failed to create ImageTargetObserver: DATABASE_LOAD_ERROR`. Has someone faced something similar and know why it happes or better know how to fix it?
In the editor it runs fine and shows no unusual logentries.
I already tries things like: redownload Vuforia, redownloaded database, cleaned scene, reentered licensekey etc.
Thanks for any help :)
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hololens 2 image target how to deploy it ?
hello i am new working on AR
I want to develop an application for the HoloLens 2 to recognize imges and display for example Text
i try unsing vuforia package 10 and unity 2020.3 it work only with my pc and webcam
Now i try with MRTK Remoletly with my hololens but it not working ? i dont know how to handle it
This is my problem
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3D object inverted
Hello, I have AR project using Model Target from Vuforia Engine. In this Model Target, I put some objects (Text and button), but after I try on my phone, and successed to scan the real object, the object in my phone (AR Camera) is inverted/reversed. I try to reverse AR Camera, also I try the reverse the object. But the result still same.
![alt text][1]
![alt text][2]
I've try put one object in the front of object (the model object), and AR Camera literally behind the object. Anyone have the solution for this problem?
[1]: /storage/temp/206988-screenshot-2023-05-01-183717.png
[2]: /storage/temp/207031-whatsapp-image-2023-05-01-at-171453.jpg
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