Patent ID: 8340368

Claim:
A face detection system for a vehicle, comprising: at least one first lighting unit and at least one second lighting unit configured to sequentially radiate infrared light onto a left and right side of the driver's face; an image capturing unit configured to separately capture right and left images of the driver's face onto which the infrared light is radiated from the at least one first lighting unit and the at least one second lighting; and a control unit configured to acquire the left and right images of the face from the image capturing unit, obtain a difference image between the acquired left and right images, and determine whether the driver is inattentive in looking ahead based on the difference image obtained, wherein the control unit acquires left and right binary images by binarizing pixels of the acquired left and right images captured by the capturing unit to identify bright portions of the driver's face, obtains the difference image from the left and right binary images and calculates an average value of pixels of the difference image to determine whether a driver is looking ahead or not.