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Diagram Drawing Using Braille Text: A Low Cost Learning Aid for Blind People
Abstract
This chapter presents a novel system for drawing geometric diagrams on the Braille medium in order to make the diagrams tactile and accessible by blind people. The computer graphics algorithms for drawing digital shapes have been suitably modified to make them work for the Braille environment. The goodness of the diagrams is measured by quantifying approximation errors in these diagrams. This chapter further demonstrates how computational intelligence can be embedded in the system to develop an intelligent teaching-learning aid for the blind, especially for teaching them figure-based subjects like geometry, physics, engineering, drawing, etc.
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