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Tactile Diagrams for Visually
Challenged

Mayank Aamseek, Dr. PVM Rao, Dr. M Balakrishnan
IIT Delhi
(Supported by MeitY)
Tactile diagrams enable perception of two dimensional images through touch. Tactile diagrams are embossed outline
drawings which are specially designed for individuals with visual impairment and blindness in order to communicate
visual information. Students with blindness can attempt to study subjects that are heavily dependent on graphics like
geography, mathematics, science etc if tactile diagrams can be produced in an affordable manner.

Tactile diagrams can be produced by multiple production methods.
The production method adopted by us involve multiple steps which
include -

- Converting diagram prepared for visual route to learning to that
suitable for tactile route to learning
- Preparing production ready diagrams with Braille annotations
- Design of mold or master
- Production of mold, and
- Production of tactile diagrams by thermoforming