This paper describes how to generate a single image which, when viewed in the appropriate way, appears to the brain as a 3D scene. The image is a stereogram composed of seemingly random dots. A new, simple and symmetric algorithm for generating such images from a solid model is given, along with the design parameters and their influence on the display. The algorithm improves on previously-descr...

Research Question: Should photographs of landmarks be displayed in indoor pedestrian navigation systems? At which point of the navigational task can these interfaces support the user? Approach: Two different navigation prototypes were implemented: one of them used photographs of landmarks to explain the route, whereas the other one showed a mobile map. Method: The time it took the users to orie...

This paper reports the layout generation approach used in a new technique for visualizing hierarchies which provides both focus and context visualization. The hierarchy is represented as a node-edge diagram separated in two connected sub-diagrams that show the node of interest and its context.

[This corrects the article on p. 102 in vol. 3, PMID: 20607080.].

We describe Tree Flow, a new technique for visualizing changes to the structure of a hierarchy, and discuss a prototype tool that implements this method. Roughly speaking, Tree Flow works by creating a timeline in which the x-axis corresponds to date information, and the y-axis corresponds to the depth-first ordering of data in a time-varying tree structure. We present several examples of real-...