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The reliability of a safety sensor is strongly dependent on the range the sensor is able to cover. Safety devices for electric automatic gates, mainly photodetectors, with their reduced sensing capabilities, can not provide the complete avoidance of injuries so that to guarantee protection for people crossing the danger area additional devices must be introduced. In this paper we evaluate as safety sensor a solo vision system fitting sliding and swing gates, the most widespread gate sorts for residential, commercial and industrial automations. Two cameras are placed at the opposite ends of the gate doorway looking at the same area to be monitored. The evaluation is carried out on both virtual and real image sequences in order to verify the practical suitability of the system after the theoretical trials exploitation.

Robot compe ons are effec ve means to learn the issues of autonomous systems on the field, by solving a complex problem end-to-end. In this paper, we illustrate Red Beard Bu on, the robo c system that we developed for the Sick Robot Day 2012 compe on, and we highlight no ons about design and implementa on of robo c systems acquired through this experience. The aim of the contest was to detect, fetch and carry balls with an assigned color to a dropping area, similarly to a foraging naviga on task. The developed robo c system was required to perceive colored balls, to grasp and transport balls, and to localize itself and navigate to assigned areas. Through extensive experiments the team developed an ini al prototype, discovered pi alls, revised the ini al assump ons and design decisions, and took advantage of the itera on process to perform successfully at the compe on.