Pain is a critical sign in many medical situations andits automatic detection and recognition using computer visiontechniques is of great importance. Utilizes this factthat pain is a spatiotemporal process, the proposed systemin this paper employs steerable and separable filtersto measures energies released by the facial muscles duringthe pain process. The proposed system not only detects thepain but recognizes its level. Experimental results on thepublicly available pain database of UNBC show promisingoutcome for automatic pain detection and recognition.
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