The Information Value of Tactile Maps: A Comparison of Maps Printed with the Use of Different Techniques

Abstract

Visually impaired people use tactile maps that can be read by the sense of touch or, to a limited extent, with their eyes. This article concerns the methods of assessing tactile maps in terms of their information value. In the research, methods used to assess traditional maps have been adopted to assess tactile maps. Tactile elements of two maps – one developed with the use of traditional methods and the second developed with the use of 3D printing – have been compared. Structural measures of information as well as the information efficiency coefficient of each map have been determined to assess whether new cartographic symbols proposed on a multi-level 3D printed map can increase its information value.

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