“…Estimation of facial poses from video sequences is important for both computer vision and multimedia content analysis, such as scene understanding, event estimation, etc., or activity analysis in video surveillances. 1,2 Over the past decades, facial pose estimation remains an active research area in which a range of techniques has been reported to investigate the pose-estimation problem, such as support vector classification, 3 eigenspace from Gabor filters, 4 manifold learning, 5 independent component analysis, 6 and a two-stage framework based on Gabor wavelets, bunch graphs, 7 etc. Recently, mutual information ͑MI͒ is used to extract facial poses from video sequences.…”