9 Real–Time Assistance Prototype – a new Navigation Aid for blind people.pdf

Real–Time Assistance Prototype – a new Navigation Aid for blind people Larisa Dunai, Guillermo Peris Fajarnes, Victor Santiago Praderas, Beatriz Defez Garcia, Ismael Lengua Lengua Research Center in Graphic Technology, Universidad Politecnica de Valencia, Camino de Vera s/n, 8L, Valencia, 46022, Spain ladu@upv.es considered the first developed ultrasound mobility device [2]. Abstract- This paper presents a new prototype for being used as The device transmits ultrasonic beams within a range of 30º a travel aid for blind people. The system is developed to at a maximum distance of 6 feet. Via vibrotactile and auditory complement traditional navigation systems such as white cane interface, the system warns about objects presence [3]. The and guide dogs. The system consists of two stereo cameras and a system is based on a box hanging from the user’s neck. Next portable computer for processing the environmental information. The aim of the system is to detect the static and generation object detector device were small hand held dynamic objects from the surrounding environment and systems, which allowed blind people to navigate more transform them into acoustical signals. Through stereophonic comfortably. Mowat Sonar System is one of the simplest and headphones, the user perceives the acoustic image of the most popular sonar sensor considered in the 80’s [4]. Via environment, the volu