Ping Liu, Shizhong Han, Yan Tong. Improving facial expression analysis using histograms of Log-Transformed Nonnegative Sparse Representation with a Spatial Pyramid Structure. In 10th IEEE International Conference and Workshops on Automatic Face and Gesture Recognition, FG 2013, Shanghai, China, 22-26 April, 2013. pages 1-7, IEEE, 2013. [doi]
Abstract is missing.