Object/Landmark Tracking using mobilephone Camera

Hi.

I really need your help on this one!
Is there a way to track an object in realtime using a mobile-phone camera?
→ Use-case: I tab on the device-screen (camera view) and then the point where i tabbed (like a coffee mug on a table) gets locked and when i move the mobile phone, the point stays on the tracked landmak.

I know there are plugins available for facial tracking (using openCV) or maker tracking (vuforia) but i have yet to find a way to track a single contrast-point from the camera in Unity.

Thanks in advance for your help!

No, it’s impossible. Using a single camera feed there is no way to know the distance of any object from the camera (i.e. the depth of each pixel), and therefore no way to know how they are transformed when the camera is rotated or translated.