April 19, 2015
Xiang Xiang et al., « Hierarchical Sparse and Collaborative Low-Rank Representation for Emotion Recognition », Hyper Article en Ligne - Sciences de l'Homme et de la Société, ID : 10670/1.lcph6g
In this paper, we design a Collaborative-Hierarchical Sparse and Low-Rank (C-HiSLR) model that is natural for recognizing human emotion in visual data. Previous attempts require explicit expression components, which are often unavailable and difficult to recover. Instead, our model exploits the lowrank property over expressive facial frames and rescue inexact sparse representations by incorporating group sparsity. For the CK+ dataset, C-HiSLR on raw expressive faces performs as competitive as the Sparse Representation based Classification (SRC) applied on manually prepared emotions. C-HiSLR performs even better than SRC in terms of true positive rate.