I'm not sure I fully understand your use case. Why do you want to rescan? Are you using regular Image Tracking, or Cloud Image Tracking?
It's just my client's requirement.
It is image tracking and when marker recognized, video is played.
At that time, when I tap close button, video must be destroyed.
But I've solved it already.
I disabled and enabled imagetracker gameobject.
I'd like to restart to scan although it is image target recognized state.
I located a button called "Reset".
I am going to re-scan when I tapped it.
Although it is state recognized, I am going to destroy current target object and re-start to scan.
How do I have to do?