Monocular visual odometry methods and systems for tracking movement of a vehicle relative to a feature in an environment about the vehicle with a single camera of the vehicle. The system includes a camera module, a feature comparison module, and a vehicle tracking module. The vehicle tracking module determines movement of the vehicle from a first position at a first time to a second position at a second time based on movement of the camera from the first position at the first time to the second position at the second time.