text: The facial expressions for each emotion are universal. "Even though individuals often show varying degrees of expression" (like not smiling as broadly) Using video imagery. The new emotion-recognition software. They track these special movements- in a real face or in the painted face of Mona Lisa. By weighting the different units , the software can even identify mixed emotions. Each expression is compared against a neutral face (showing no emotion). The Mona Lisa demonstration is really intended to bring a smile to your face, while it shows just how much this computer can do.