Journals:

• Ahmed A Abdelrahman, Dominykas Strazdas, Aly Khalifa, Jan Hintz, Thorsten Hempel, Ayoub Al-Hamadi, "Multimodal Engagement Prediction in Multiperson Human–Robot Interaction", IEEE Access, vol. 10, pp. 61980-61991, 2022, doi: 10.1109/ACCESS.2022.3182469.
• Aly Khalifa, Ahmed A Abdelrahman, Dominykas Strazdas, Jan Hintz, Thorsten Hempel, Ayoub Al-Hamadi, "Face Recognition and Tracking Framework for Human–Robot Interaction", Applied Sciences. 2022; 12(11):5568. https://doi.org/10.3390/app12115568
• Thorsten Hempel, Ayoub Al-Hamadi, "An online semantic mapping system for extending and enhancing visual SLAM", Engineering Applications of Artificial Intelligence, Volume 111, 2022, 104830, ISSN 0952-1976, https://doi.org/10.1016/j.engappai.2022.104830. Impact Factor 2022: 7.802
• Dominykas Strazdas, Jan Hintz, Aly Khalifa, Ahmed A. Abdelrahman, Thorsten Hempel, Ayoub Al-Hamadi, "Robot System Assistant (RoSA): Towards Intuitive Multi-Modal and Multi-Device Human-Robot Interaction", Sensors. 2022; 22(3):923. https://doi.org/10.3390/s22030923
• Thorsten Hempel, Ayoub Al-Hamadi, Pixel-Wise Motion Segmentation for SLAM in Dynamic Environments, IEEE Access 08:164521 - 164528, September 2020, DOI: 10.1109/ACCESS.2020.3022506

Conference Proceedings (International)

• Thorsten Hempel, Ayoub Al-Hamadi, SLAM-Based Multistate Tracking System for Mobile Human-Robot Interaction, Image Analysis and Recognition, 368-376, Springer International Publishing, 2020
• Laslo Dinges, Ayoub Al-Hamadi, Thorsten Hempel, Z Al Aghbari, "Using Facial Action Recognition to Evaluate User Perception in Aggravated HRC Scenarios", 2021 12th International Symposium on Image and Signal Processing and Analysis (ISPA), doi: 10.1109/ISPA52656.2021.9552079
• Thorsten Hempel, Marc-André Fiedler, Aly Khalifa, Ayoub Al-Hamadi, and Laslo Dinges, “Semantic-Aware Environment Perception for Mobile Human-Robot Interaction,” 2021 12th International Symposium on Image and Signal Processing and Analysis (ISPA), 2021, pp. 200–203, doi: 10.1109/ISPA52656.2021.9552148.
• Thorsten Hempel, Ahmed A Abdelrahman, Ayoub Al-Hamadi, "6D Rotation Representation For Unconstrained Head Pose Estimation", 2022 IEEE International Conference on Image Processing (ICIP), Bordeaux, France, 2022, pp. 2496-2500, doi: 10.1109/ICIP46576.2022.9897219.