The through-the-lens metaphor: taxonomy and application
Stanislav L. Stoev, Dieter Schmalstieg, Wolfgang Straßer · 2003
We present a set of tools based on the through-the-lens metaphor. This metaphor enables simultaneous exploration of a virtual world from two different viewpoints. The one is used to display the surrounding environment and represents the user, the other is interactively adjusted and the resulting images are displayed in a dedicated window.