1. Zhou, Z., Zhao, G., Hong, X., Pietikainen, N.: A review of recent advances in visual speech decoding. Image Vis. Comput. 32(9), 590–605 (2014)
2. He, K., Zhang, X., Ren, S., Sun, J.: Deep residual learning for image recognition. In: IEEE Conference on Computer Vision and Pattern Recognition (CVPR), pp. 770-778. Las Vegas (2016)
3. Abtahi, S., Omidyeganeh, M., Shirmohammadi, S., Hariri, B.: YawDD: a yawning detection dataset. In: Proceedings of the 5th ACM Multimedia Systems Conference, pp. 24-28, New York, USA (2014)
4. Bendris, M., Charlet, D., Chollet, G.: Lip activity detection for talking faces classification in TV-content. In: The 3rd International Conference on Machine Vision (2010)
5. Viola, P., Jones, M.: Rapid object detection using a boosted cascade of simple features. In: Computer Vision and Pattern Recognition, April 2001