• openAccess   Analysis of volumetric tactile symbols produced with 3D printing 

      Gual, Jaume; Puyuelo Cazorla, Marina; Lloveras Macià, Joaquim (2012)
      The morphological elements of design used for designing tactile maps and symbols for visually impaired users are points, linear, and areal elements. One of the main characteristics of these elements is their two-dimensional ...