Automatic control method and device for car rear view mirror using face detection

PURPOSE: An automatic control method of a rear view mirror of a vehicle using face recognition is provided to take the face of a driver reflected in a rearview mirror and to calculate the best angle of a rearview mirror corresponding to the driver. CONSTITUTION: An automatic control method of a rear view mirror of a vehicle using face recognition is as follows. The face of an driver shown in a rearview mirror is recorded through a camera(S10). A distortion of the recorded image is corrected(S20). The lip position of the driver is detected from the corrected image(S30). A spatial position of the driver is found through the lips location(S40). The finest angle of the rearview mirror is calculated. The driver is able to observe the right rear area of the vehicle through the rearview mirror to the fittest angle. The corrected angle of the rearview mirror is calculated based on the difference of the finest angle and the initial angle of the rearview mirror(S50).