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Full-Text Articles in Physical Sciences and Mathematics
A Vision System For Providing The Blind With 3d Colour Perception Of The Environment, S. Meers, Koren Ward
A Vision System For Providing The Blind With 3d Colour Perception Of The Environment, S. Meers, Koren Ward
Faculty of Informatics - Papers (Archive)
Although various attempts have been made at providing the blind with substitute visual perception, no existing method provides useful colour perception of the environment. This paper describes a substitute vision system which provides perception of the three-dimensional profile and colour of the surrounding environment via haptic sensations alone. This is aimed at allowing visually-impaired people to avoid obstacles and navigate the environment by recognising landmarks by their colour and profile. The prototype system uses stereo video cameras to capture colour images of the environment from which a disparity depth map can be calculated. The depth map is sampled into ten …
A Substitute Vision System For Providing 3d Perception And Gps Navigation Via Electro-Tactile Stimulation, S. Meers, Koren Ward
A Substitute Vision System For Providing 3d Perception And Gps Navigation Via Electro-Tactile Stimulation, S. Meers, Koren Ward
Faculty of Informatics - Papers (Archive)
This paper describes a novel approach for enabling the blind to achieve obstacle avoidance and navigation in outdoor environments with the aid of visual sensors, GPS and electro-tactile stimulation. The electro-neural vision system (ENVS) works by extracting a depth map from stereo cameras by measuring the disparity between the stereo images. This range data is then delivered to the fingers via electro-neural stimulation to indicate to the user the range of objects being viewed by the cameras. To perceive the location of obstacles and the 3D structure of the environment the user imagines that the hands are held in the …