How to make object showing depend on target?

Questions & Answers
1

I have a 3d object related to image target. How can I show a 3d object in the top of image target?

2

what is this “image target”? is it an UI image in unity native ui system?

if yes, you have to set the canvas to use “Screen Space - Camera” or “World Space” for Render Mode. And place the 3D object in front of the image. Or you can render the 3d object on a RenderTexture use this render texture in the ui but there may be some problem on transpraceny