I use the script attached in the following link.
This post seem very old. Many class , attribute doesn't exist now.
How to access the camera Image (without augmentation)?
I tried following :
Texture2D texture2D = textureGameObject.GetComponent<Renderer>().material.mainTexture as Texture2D ;
(textureGameObject is the BackgroundPlane gameObject, the grandson of ARCamera prefab in Vuforia.)
I can get this texture easily in Mac OSX , But this get nothing on IOS 9.1.
What is the right way to access the camera Image (without augmentation)?