https://developer.vuforia.com/library/articles/Training/Getting-Started-with-the-Vuforia-Target-Manager

https://developer.vuforia.com/downloads/samples

https://developer.vuforia.com/forum/faq/unity-how-can-i-capture-screen-shot

https://developer.vuforia.com/library/tutorials

https://developer.vuforia.com/library/articles/Training/Cloud-Recognition-Guide

Hi, @DavidBeard.

All the useful links that you provided are now broken. It would be great if you could update them.

Thank you very much.

Regards!

using UnityEngine;
using System.Collections;

public class SimpleCREventHandler : MonoBehaviour, ICloudRecoEventHandler {
	
	#region PRIVATE_MEMBER_VARIABLES
	
	//CloudRecoBehaviour reference to avoid lookups
	private CloudRecoBehaviour mCloudRecoBehaviour;
	//ImageTracker reference to avoid lookups
	private ImageTracker mImageTracker;
	
	private GameObject jelly, ghost;
	
	#endregion // PRIVATE_MEMBER_VARIABLES
	
	
	#region EXPOSED_PUBLIC_VARIABLES
	
	public ImageTargetBehaviour ImageTargetTemplate;
	
	#endregion
	
	#region UNITY_MONOBEHAVIOUR_METHODS
	
	// Use this for initialization
	void Start () {
	
		//register this event handler at the cloud reco behaviour
		CloudRecoBehaviour cloudRecoBehaviour = GetComponent<CloudRecoBehaviour>();
		if(cloudRecoBehaviour)
		{
			cloudRecoBehaviour.RegisterEventHandler(this);
		}
		
		//remember cloudRecoBehaviour for later
		mCloudRecoBehaviour = cloudRecoBehaviour;
		
		
        //jelly = GameObject.Find("Jelly");
        //ghost = GameObject.Find("BooBoo");
         
        //Hide( jelly );
        //Hide( ghost );
        
         
        //jelly.SetActive( false );
        //ghost.SetActive( false );
		
	}
	
	#endregion // UNITY_MONOBEHAVIOUR_METHODS
	
	#region ICloudRecoEventHandler_IMPLEMENTATION
	
	public void OnInitialized()
	{
		//get a reference to the Image Tracker and remember it
		mImageTracker = (ImageTracker)TrackerManager.Instance.GetTracker(Tracker.Type.IMAGE_TRACKER);
	}
	
	 public void OnInitError(TargetFinder.InitState initError)
    {
    }
 
    public void OnUpdateError(TargetFinder.UpdateState updateError)
    {
    }
 
    public void OnStateChanged(bool scanning)
    {
    }
 	
	public void OnNewSearchResult(TargetFinder.TargetSearchResult targetSearchResult)
	{
		//duplicate the referenced image target
		GameObject newImageTarget = Instantiate(ImageTargetTemplate.gameObject) as GameObject;
		
		GameObject augmentation = null;
		
		string model_name = targetSearchResult.MetaData;
		
		if(augmentation != null)
		{
			augmentation.transform.parent = newImageTarget.transform;
		}
		
		//enable the new result with the same ImageTargetBehaviour
		ImageTargetBehaviour imageTargetBehaviour = mImageTracker.TargetFinder.EnableTracking(targetSearchResult,newImageTarget);
		
		Debug.Log("Metadata value is : " + model_name );
		
		
		switch(model_name)
		{
		case "ghost" :
			Destroy(imageTargetBehaviour.gameObject.transform.Find("Jelly").gameObject);
			break;
			
		case "jelly" :
			Destroy(imageTargetBehaviour.gameObject.transform.Find("BooBoo").gameObject);
			break;
		}
		
		if (imageTargetBehaviour != null)
		{
			//stop the target finder
			mCloudRecoBehaviour.CloudRecoEnabled = false;
		}
	}
	
	// Update is called once per frame
	void Update () {
		
		if (Input.GetKeyDown ("escape")) {
			Application.Quit ();
		}
	
	}
	#endregion // ICloudRecoEventHandler_IMPLEMENTATION
	
	 private void Hide( GameObject model ){
         
        Debug.Log( "Hiding "+ model.name );
         
        Renderer[] rendererComponents = model.GetComponentsInChildren<Renderer>();
        Collider[] colliderComponents = model.GetComponentsInChildren<Collider>();
 
        // Disable rendering:
        foreach (Renderer component in rendererComponents)
        {
            component.enabled = false;
        }
 
        // Disable colliders:
        foreach (Collider component in colliderComponents)
        {
            component.enabled = false;
        }
 
        //Debug.Log("Trackable " + mTrackableBehaviour.TrackableName + " lost");
    }
}

So I had this problem, I followed the tutorial, then it can recognize the marker and draw the object. after that, I added the script to enable quiting from application using back arrow(Android) now it cannot recognize the marker. I followed the tutorial all the same, just changed the name a bit here and there. is there anything wrong with my code? or is it the internet connection? I assume this application uses internet connection to right?

Thank you for the quick reply. I will try this out and post again if something is not clear enough

The 1st concept is the recommended implementation, so that you can manage target submissions. 

Here is a tutorial on working w/ Cloud Recognition in Unity - https://developer.vuforia.com/resources/tutorials , and there is sample code and API examples on this page - https://developer.vuforia.com/resources/dev-guide/managing-targets-cloud-database-using-developer-api

This article demonstrates how to capture a screen shot in Unity - https://developer.vuforia.com/resources/dev-guide/unity-screenshots , and this one deals with how to access the camera image directly - https://developer.vuforia.com/resources/dev-guide/unity-camera-image-access