Fast and Accurate Face Orientation Measurement in Low-resolution Images on Embedded Hardware Topics: Event and Human Activity Recognition; Face and Expression Recognition; Object and Face Recognition; Vision for Robotics; Visual Attention and Image Saliency In Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4 VISAPP: VISAPP, 538-544, 2016 , Rome, Italy