Exploring Human Dynamic Facial Expression Recognition with Animation

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We present a psychophysical experiment on dy- namic facial expression recognition based on facial animation. The experiment investigates high-level after-effects in the per- ception of dynamic facial expressions. High-level after-effects have been reported before for the recognition of static faces (22)(16). Presentation of static 'anti-faces' biases the perception of neutral test faces temporarily towards the perception of specific identities. This result has been interpreted as evidence for the existence of continuous perceptual spaces for the repre- sentation of static faces. Recent experiments have demonstrated high-level after-effects also for point-light walkers, resulting in shifts of perceived gender (14)(19). We present for the first time an after-effect for dynamic facial expressions. In particular, we show how such after-effects depend on facial identity and dynamic vs. static adapting stimuli. These experiments are based on a highly controllable dynamic morphable face model and a parametrization of facial expressions in terms of 3D Facial Action Units. This technology enables us to create dynamic 'anti-expressions' in analogy to static 'anti-faces'. The presented results provide constraints for the computational modeling of the perception of dynamic faces in biological and technical systems.

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... To bypass this, Hashimoto et al. propose a curved surface display to build a robotic head which is capable to express emotions [60]. In a psychological study, Curio et al. find after-effects for the dynamic facial expressions disgust and happiness [33]. Viewing a facial expression for a longer time results in the tendency to classify the following expression as similar to the previous one. ...
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