Abstract
We present a system to automatically recognize facial expressions from static images. Our approach consists of extracting particular Gabor features from normalized face images and mapping them into three of the six basic emotions: joy, surprise and sadness, plus neutrality. Selection of the Gabor features is performed via the AdaBoost algorithm. We evaluated two learning machines (AdaBoost and Support Vector Machines), two multi-classification strategies (Error-Correcting Output Codes and One-vs-One) and two face image sizes (48 x 48 and 96 x 96). Images of the Cohn-Kanade AU-Coded Facial Expression Database were used as test bed for our research. Best results (87.14% recognition rate) were obtained using Support Vector Machines in combination with Error-Correcting Output Codes and normalized face images of 96 x 96.
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Giorgana, G., Ploeger, P.G. (2012). Facial Expression Recognition for Domestic Service Robots. In: Röfer, T., Mayer, N.M., Savage, J., Saranlı, U. (eds) RoboCup 2011: Robot Soccer World Cup XV. RoboCup 2011. Lecture Notes in Computer Science(), vol 7416. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32060-6_30
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DOI: https://doi.org/10.1007/978-3-642-32060-6_30
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