Bimodal emotion recognition based on speech signals and facial expression

Abstract

Voice signals and facial expression changes are synchronized under the different emotions, the recognition algorithm based audio-visual feature fusion is proposed to identify emotional states more accurately. Prosodic features were extracted for speech emotional features, and local Gabor binary patterns were adopted for facial expression features. Two types of features were modeled with SVM respectively to obtain the probabilities of anger, disgust fear, happiness, sadness and surprise, and then fused the probabilities to gain the final decision. Simulation results demonstrate that the average recognition rates of the single modal classifier based on speech signals and based on facial expression reach 60% and 57% respectively, while the multimodal classifier with the feature fusion of speech signals and facial expression achieves 72%. © 2011 Springer-Verlag Berlin Heidelberg.