Unity 3D：ARFoundation多图像跟踪

Question

我正在尝试扫描图像并在其上放置预制件，ARFoundation中给出的示例工作正常，但是我的目标是，对于要显示不同预制件的每张扫描图像，我都尝试如下操作但无法正常工作

   void UpdateInfo(ARTrackedImage trackedImage)
    {
        // Set canvas camera
        var canvas = trackedImage.GetComponentInChildren<Canvas>();
        canvas.worldCamera = worldSpaceCanvasCamera;


        var planeParentGo = trackedImage.transform.GetChild(0).gameObject;
        var planeGo = planeParentGo.transform.GetChild(0).gameObject;

        // Disable the visual plane if it is not being tracked
        if (trackedImage.trackingState != TrackingState.None)
        {
            planeGo.SetActive(true);

            GameObject myInstance = Instantiate(Resources.Load("ImageInfoPrefab"), new Vector3(trackedImage.size.x, 1f, trackedImage.size.y), Quaternion.identity) as GameObject;

            Debug.Log("----------------> 1");
            if (trackedImage.referenceImage.name == "10")
            {
                Debug.Log("----------------> 2");
                Debug.Log(trackedImage.name);

                Instantiate(myRoadInstance, transform.position, transform.rotation);


        }
            else if (trackedImage.referenceImage.name == "12")
            {
                Debug.Log(trackedImage.name);
                Instantiate(myRoadInstance, transform.position, transform.rotation);

           }



            // The image extents is only valid when the image is being tracked
            trackedImage.transform.localScale = new Vector3(trackedImage.size.x, 1f, trackedImage.size.y);
            // Set the texture
            var material = planeGo.GetComponentInChildren<MeshRenderer>().material;
            material.mainTexture = (trackedImage.referenceImage.texture == null) ? defaultTexture : trackedImage.referenceImage.texture;

        }
        else 
        {
            planeGo.SetActive(false);
            planeParentGo.SetActive(false);
        }
    }




    void OnTrackedImagesChanged(ARTrackedImagesChangedEventArgs eventArgs)
    {
        foreach (var trackedImage in eventArgs.added)
        {
            // Give the initial image a reasonable default scale
            trackedImage.transform.localScale = new Vector3(0.01f, 1f, 0.01f);

            UpdateInfo(trackedImage);

        }

        foreach (var trackedImage in eventArgs.updated)
            UpdateInfo(trackedImage);
    }

因此从以上代码中，您可以看到正在尝试根据trakedImage名称实例化预制件。但这不起作用。

 GameObject myInstance = Instantiate(Resources.Load("ImageInfoPrefab"), new Vector3(trackedImage.size.x, 1f, trackedImage.size.y), Quaternion.identity) as GameObject;