Pattern Recognition and Image Analysis : 9th Iberian Conference, IbPRIA 2019, Madrid, Spain, July 1–4, 2019, Proceedings, Part I - Morales, Aythami (Herausgeber); Fierrez, Julian (Herausgeber); Sánchez, José Salvador (Herausgeber); Ribeiro, Bernardete (Herausgeber) (Image Processing, Computer Vision, Pattern Recognition, and Graphics, 2019)