Rearview assembly adjustment system

A system for calibrating a driver monitoring system in a vehicle, comprising:

• a rearview assembly comprising a housing and a mount, the mount secured to a vehicle surface, and a barrel having a first end and a second end and extending between the housing and the mount;
• an imager capable of capturing images, the imager disposed in the rearview assembly;
• a processor in communication with the imager;
• a memory in communication with processor, the memory comprising a file containing information on stationary landmarks proximate the imager;
• and
• a controller operable to:
• receive images of the vehicle's interior, and
• calibrate the imager, where the calibration includes identifying a substantially stationary landmark in a first image used during an initial calibration;
• wherein the controller is configured to re-calibrate the driver monitoring operations based, at least in part, on a detection of the substantially stationary landmark being in a different location in a second image relative to the first image.