Then we have to apply Bezier curve on the binary lip. For apply Bezier curve, we find the starting and ending pixel of the lip in horizontal. Then we draw two tangents on upper lip from the starting and ending pixel and also find two points on the tangent which is not the part of the lip. For the lower lip, we find two point similar process of the upper lip. We use Cubic Bezier curves for draw the Bezier curve of the lip. We draw two Bezier curve for the lip, one for upper lip and one for lower lip.