RT Journal Article T1 Improving the Head Pose Variation Problem in Face Recognition for Mobile Robots A1 Baltanas, Samuel-Felipe A1 Ruiz-Sarmiento, Jose-Raul A1 Gonzalez-Jimenez, Javier K1 Face recognition K1 Assistant mobile robots K1 Cross-pose face recognition K1 MAPIR Faces K1 Human-robot interaction K1 Reconocimiento facial K1 Redes neurales de la computaciĆ³n AB Face recognition is a technology with great potential in the field of robotics, due to its prominent role in human-robot interaction (HRI). This interaction is a keystone for the successful deployment of robots in areas requiring a customized assistance like education and healthcare, or assisting humans in everyday tasks. These unconstrained environments present additional difficulties for face recognition, extreme head pose variability being one of the most challenging. In this paper, we address this issue and make a fourfold contribution. First, it has been designed a tool for gathering an uniform distribution of head pose images from a person, which has been used to collect a new dataset of faces, both presented in this work. Then, the dataset has served as a testbed for analyzing the detrimental effects this problem has on a number of state-of-the-art methods, showing their decreased effectiveness outside a limited range of poses. Finally, we propose an optimization method to mitigate said negative effects by considering key pose samples in the recognition system's set of known faces. The conducted experiments demonstrate that this optimized set of poses significantly improves the performance of a state-of-the-art, cutting-edge system based on Multitask Cascaded Convolutional Neural Networks (MTCNNs) and ArcFace. PB MDPI YR 2021 FD 2021-01-19 LK http://hdl.handle.net/10668/3965 UL http://hdl.handle.net/10668/3965 LA en NO Baltanas SF, Ruiz-Sarmiento JR, Gonzalez-Jimenez J. Improving the Head Pose Variation Problem in Face Recognition for Mobile Robots. Sensors (Basel). 2021 Jan 19;21(2):659 DS RISalud RD Apr 5, 2025