Inspec keywords: perceptrons; emotion recognition; feature extraction; image texture; face recognition; support vector machines; decision trees

Other keywords: random forest; support vector machine; facial expression recognition; random noise; facial expression emotion; pixel intensity; KTHTIPS2b; K-nearest neighbour algorithm; decision tree; angled local directional pattern; Cohn-Kanade database; centre pixel value; Naive-Bayes; LBP; image intensity; texture analysis; Kirsch Masks; gradient space; feature extraction method; texture data set; local binary pattern; edge response value; Kylberg; ALDP; LDP method; perceptron

Subjects: Computer vision and image processing techniques; Image recognition; Combinatorial mathematics; Knowledge engineering techniques; Neural computing techniques; Combinatorial mathematics