Blink detection method, system and device

The invention discloses a blink detection method, system and device, and the method comprises the following steps: obtaining continuous frames of face recognition images, and each frame of face recognition image comprises the key point information of eyes; a rectangular coordinate system is established for the continuous frames of face recognition images, eyes are located in one quadrant, and ROI areas around the eyes are set; for the core key points of the ROI region, performing surrounding neighborhood region growth by taking the centroid point as a central point, and generating a core key point set; and judging whether blinking occurs or not according to the change of the coordinate positions of the centroid points of the same core key point set in the continuous frames of face recognition images. According to the method, upper eyelid movement in the blinking process is detected by using the vector property of translation at a constant distance from a camera in an optical flow method, a key point detected