Manifold of Facial Expressions for Tactile Perception

To enhance their social interactive ability, we study how to provide the sight-impaired with reliable, \´"on-line" emotion information. The technical challenge we address here is how to render rich facial expressions in an intuitive way. We demonstrate that manifold of facial expressions is a compact and natural way to characterize human emotions. To compute manifold of facial expressions the standard locally linear embedding (LLE) algorithm is extended to handle the problem of real-time coding of new videos. Experimental results show that using manifold of facial expressions for vibrotactile rendering is very encouraging.