Postural expressions of emotions in a humanoid robot for assistive applications

In this paper, we present the development of postu ral expressions of emotions for the humanoid robot Nao in an assistive context. The approach is based on the ada pt tion of human body postures to the case of the Nao robot. I n our paper, the association between the joints of human body an d the joints of Nao robot are described. The postural expressions a re studied for three emotions anger, sadness, and happiness. In our experimental design, we generated 32 postural expre ssions for each emotion and based on the questionnaire-based i nterview of ten external observers, we selected the best five p ostural expressions for each emotion. The results of this work will be integrated in a study designed for children with autism. Keywords-human-robot interaction, social behavior, emotions.