3D Visualisation Techniques for Multi-Layer DisplayTM Technology

Traditional computer monitors offer limited depth perception due to their 2D nature. The multi-layer display technology uses two or more display layers stacked in parallel and separated physically by depth. When viewing a Multi-Layer Display (MLDTM) objects displayed on the front layer appear closer than objects on the back layer, and when moving the head while viewing the display objects on the front and back layer move relative to each other. However, it is not clear how complex 3D scenes can be rendered effectively using two physically separated view planes. We have experimentally analysed differences in perception when using single and MultiLayer Displays and used the results to develop novel rendering techniques for MLDTM. We found that perception of scenes can be improved by emphasizing important objects by displaying them on a different layer, by separating datasets on different layers, by extruding objects across layers, by transitioning objects smoothly between layers and by making use of the transparency of the front layer. As a result of our user studies we present a set of guidelines for the most effective use of Multi-Layer Display technology for rendering 3D scenes.