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Emotional facial expression transfer involves sequence-to-sequence mappings from an neutral facial expression to another emotional facial expression, which is a well-known problem in computer graphics. In the graphics community, current considered methods are typically linear (e.g., methods based on blendshape mapping) and the dynamical aspects of the facial motion itself are not taken into account. This makes it difficult to retarget the facial articulations involved in speech. In this paper,doi:10.1109/apsipa.2014.7041738 dblp:conf/apsipa/LiuHLDLO14 fatcat:3mdrpzr7kfdr3hbctv5ixf27ay