Web: http://arxiv.org/abs/2209.01813

Sept. 20, 2022, 1:13 a.m. | Benjamin Szczapa, Mohamed Daoudi, Stefano Berretti, Pietro Pala, Alberto Del Bimbo, Zakia Hammal

cs.CV updates on arXiv.org arxiv.org

We propose an automatic method to estimate self-reported pain based on facial
landmarks extracted from videos. For each video sequence, we decompose the face
into four different regions and the pain intensity is measured by modeling the
dynamics of facial movement using the landmarks of these regions. A formulation
based on Gram matrices is used for representing the trajectory of landmarks on
the Riemannian manifold of symmetric positive semi-definite matrices of fixed
rank. A curve fitting algorithm is used to …

analysis arxiv manifold pain positive

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