1Canny edge 1Canny edge detection 1Ekman universal facial emotion expression classification 1Gaussian kernel 1SVDD one-class support vector machines 1Sobel edge 1Sobel edge detection 1abstract face-like patterns 1cartoon faces 1classifier performance 1component action approach 1component approach 1component based approach 1contemptuous expression 1cross validation technique 1degree two polynomial kernel 1expression pair performance dynamics 1expressive face 1face pareidolia

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1King, Robert A. 1King, Robert A. R. 1Ostwald, Michael J.