A RGB-HSI Conversion Based Model to Map the Colour Perception into Audio Equivalent to Assist Visually Impaired Persons

摘要

The Cognitive learning process of a human being normally begins with sensory inputs. This process of learning gets hampered in case of persons with one or more perceptual disability. Vision being one of the most important perception, maximum learning happens through it. The absence of vision in humans is often supported by Tactile or Auditory perception during the cognitive learning process. Colour identification by a visually impaired person using such sensory substitution still remains a challenge for researchers. This paper discusses a RGB-HSI based mathematical model supported by experimental studies to perceive colours via auditory substitution. The Colour space transformation from {R, G, B} to {H, S, I} is used to establish a mapping from colour to sound, using hue values. The experimental results indicate that this model provides auditory perception as an effective substitute in identifying colours by visually impaired learners.