An image based quantitative evaluation method for Facial Paralysis

We proposed an image based quantitative evaluation method for Facial Paralysis. We selected a left cheek point and a right cheek point as a pair of landmarks for quantitative analysis. We first calculated both moving distances of each landmark in horizontal direction and vertical direction when becoming expression face from the natural face. We showed the movement difference between the left landmark and right landmark can be used as a quantitative measure of paralysis level.