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Pain Expression Recognition Based on pLSA Model
2014
The Scientific World Journal
We present a new approach to automatically recognize the pain expression from video sequences, which categorize pain as 4 levels: "no pain," "slight pain," "moderate pain," and " severe pain." First of all, facial velocity information, which is used to characterize pain, is determined using optical flow technique. Then visual words based on facial velocity are used to represent pain expression using bag of words. Final pLSA model is used for pain expression recognition, in order to improve the
doi:10.1155/2014/736106
pmid:24982986
pmcid:PMC3985295
fatcat:7cwk44eu7fc3rkbee7ou7ppdwq