Tactograph – The latest addition by the Assistive Technologies Laboratory
A group of scientists working at the Assistive Technologies Laboratory have an exciting device, this time to enable visually impaired. Jayavel, a scientist with the lab mentions “Visually impaired people face many challenges and difficulties in their daily life. One of the best ways to help them tackle problems in their life is by educating them. For their knowledge source, these people mainly depend on sense of touch”.
They feel difficulty in comprehending various aspects of the physical world, such as shapes, sizes and the relative spatial orientation of objects. In the stages of pre-literacy, their exposure to tactile images becomes the equivalent of a picture book. These books are expensive and limited by non reliable printing process. With this motivation, a low cost Tactograph printer is developed. Using this, any normal paper or books can be printed with touch sensible tactile graphical images and any new lesson plans can be easily created and printed. This gives possibility for the teachers to develop customized lesson plans in the way the students can understand better. To make this printing process user friendly a Graphical User Interface(GUI) is developed with image recognition algorithm. This algorithm helps the teacher to print the tactile image in just four mouse clicks.