1. Computer Vision for Human-Computer Interaction Lab, Institute for Anthropomatics and Robotics, Germany and Center for Digital Accessibility and Assistive Technology, Karlsruhe Institute of Technology (KIT), Germany
2. Center for Digital Accessibility and Assistive Technology, Karlsruhe Institute of Technology (KIT), Germany
3. Intelligent Sensing and Perception Group, University of Stuttgart, Germany
4. Karlsruhe Institute of Technology (KIT), Center for Digital Accessibility and Assistive Technology, Germany