Towards Developing a Voice-Over-Guided System for Visually Impaired People to Learn Writing the Alphabets

The visually impaired people have been previously brought into the sphere of learning and education using various assistive technology, which has the latent to improve. These technologies have primarily relied on haptic feedback. Similarly, these technologies or approaches require the assistance of sighted teachers or various costly tools. Moreover, these existing systems are typically restricted to teaching the alphabet or strokes of a single language. To address these research gaps, a system is developed that teaches visually impaired people to learn the writing of the alphabet. In the proposed system, the visually impaired learners will be guided by a voice-over from a computer to write alphabets on a graphics pad using a stylus. Finally, the written alphabet can be checked through an image-processing technique to measure its accuracy. The voice-over guide constantly monitors the strokes being made by the learner, and if the learner gives any wrong strokes or move out of the guided way when writing the pad, the system provides alert and instructions accordingly. The system also very successfully informed the visually impaired learners about their learning progress or accuracy of a particular alphabet and suggested improvement, if required.