A Vision Based System for Assisting Blind People at Indoor and Outdoor Exploration Topics: Guidance, Navigation and Control; Human-Machine Interfaces; Human-Robots Interfaces; Image Processing; Intelligent Transportation Technologies and Systems; Mobile Robots and Autonomous Systems; Perception and Awareness; Vision, Recognition and Reconstruction In Proceedings of the 21st International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO, 54-65, 2024 , Porto, Portugal