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- research-articleDecember 2013
Learning a sparse codebook of facial and body microexpressions for emotion recognition
ICMI '13: Proceedings of the 15th ACM on International conference on multimodal interactionPages 237–244https://doi.org/10.1145/2522848.2522851Obtaining a compact and discriminative representation of facial and body expressions is a difficult problem in emotion recognition. Part of the difficulty is capturing microexpressions, i.e., short, involuntary expressions that last for only a fraction ...