Warning System for Abnormal Movement of Driver's Head

The paper proposes a robust warning system to detect abnormal movement of driver's head. The LED light source is designed and placed behined the driver's head. The CMOS sensor is used to acquire frames including the region around the driver's head. The acquired frame is analyzed by the proposed abnormal head movement warning algorithm. Any head movement will result in changes of the LED region acquired by the CMOS sensor. By analyzing these changes, the monitoring algorithm can detect abnormal head movement and issue a warning signal correctly. The system is robust to violent illumination variation outside the vehicle and eys-sheltered effect from sunglasses. Software simulations are also given to demonstrate its effectiveness and robustness.