Analysis and synthesis of realistic eye movement in face-to-face communication

During face-to-face conversation, human eyes always rotate irregularly. Therefore, it is essential to synthesize such complex eye movements for the achievement of realistic human facial animation. In the conversation, there are two kinds of eye movements, Saccades and Fixation Eye Movements (FEMs). Saccade is a relatively large scale motion in eye movements compared with FEMs' smaller one. Gu et al [2007] mainly focused on saccades and suggested probability models based on their measurements. In their research, they treated FEMs as a part of saccades, even though saccades and FEMs are totally different kinds of eye movements. Thus their approximation is insufficient and brings unnatural appearance especially in conversations. Moreover, they avoided to provide an approximation of blinks' motions.