TDraw: a computer-based tactile drawing tool for blind people
Assets '96 Proceedings of the second annual ACM conference on Assistive technologies
A study of blind drawing practice: creating graphical information without the visual channel
Assets '00 Proceedings of the fourth international ACM conference on Assistive technologies
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Hand exploratory movements are an important aspect in the pedagogical exercise of teaching and learning diagrammatic representations among vision impaired students. The Tactile Graphic Tool is one such device allowing hand exploratory movement in making tactile diagrams of graphical and geometric constructions. In this paper the same device is modified to be used along with a portable digital pad making the tactile picture drawn accessible as digital picture in computer through its interface. Illustrations of tactile geometrical construction in tactile and digital format are provided.