The Effect of Colour and Transparency on the Perception of Overlaid Grids

摘要: Overlaid reference elements need to be sufficiently visible effectively relate the underlying information, but not so obtrusive that they clutter presentation. We seek create guidelines for presenting such structures through experimental studies define boundary conditions visual intrusiveness. base our work on practice of designers, who use transparency integrate overlaid grids with their imagery. Previous discovered a useful range alpha values black or white overlayed scatterplot images rendered in shades gray over backgrounds different lightness values. This compares blue and red ones image types scatterplots maps. expected coloured grayscale would more visually salient than ones, resulting lower Instead, we found there was no significant difference between boundaries set grids, were consistently higher (more opaque). As previous study, are affected by density rather type, many default settings. These results have implications design subtle structures.