Attention level determination

A control system for a vehicle, the control system comprising one or more controllers, the control system being configured to:

• receive user movement data indicative of movement of a user's head;
• receive object movement data indicative of movement of an object, the object being associated with a non-driving task;
• determine one or more relative movement parameters indicative of the relative movement of the user's head with respect to the object based at least in part on the received user movement data and the object movement data, wherein determining the one or more relative movement parameters comprises:
• calculating a cross-correlation between the user movement data and the object movement data as a function of time lag displacement;
• determining a correlation strength based on a peak value of the cross-correlation;
• and
• determining a time delay between the object movement and corresponding user head movement based on the time lag displacement at the peak value;
• determine an attention level of the user to the non-driving task based at least in part on the determined one or more relative movement parameters;
• and
• output a control signal to one or more vehicle systems for controlling the vehicle based at least in part on the determined attention level of the user.