This article presents a model of character recognition and the experiments used to develop and test it. The model applies to foveal viewing of blurred or unblurred characters and to tactile sensing of raised characters using the fingerpad. The primary goal of the model is to account for variations in legibility across character sets; a secondary goal is to account for variations in the cell ent...

One of the issues in Web page design is the selection of appropriate combinations of background and foreground colors to display textual information. Colors have to be selected in order to guarantee legibility for different devices, viewing conditions and, more important, for all the users, including those with deficient color vision. In this paper we present a tool to select background and for...

Ambient lighting conditions, under which the packaging is viewed, determine to a large extent the visual perception of the information which it carries. This paper investigated how different illuminants affect the legibility of pictograms intended for the application on different coloured packaging. 87 participants observed the pictograms on blue, red and yellow coloured backgrounds in a viewin...