We propose a novel visualization of moving or shape-changing 3-D objects. Events in 3-D space are represented as 4-D spatio-temporal information in 4-D space composed of three space dimensions and one time dimension. We have developed an interactive 4-D space-time visualization system that enables users to intuitively understand such events using an interactive interface that consists of a glasses-free 3-D display and a flight controller pad. While conventional systems visualize events in 3-D space by degenerating one dimension of space or time, the proposed system visualizes events including both 3-D space and time by projecting 4-D spatio-temporal information onto a 3-D viewing field. Using the proposed system, we can flexibly observe various dynamic events of a 3-D object from an arbitrary eye point and visual axis while changing the form of the viewing field in 4-D space-time. Consequently, we can visually perceive dynamic characteristics of a 3-D object that cannot generally be overviewed in 3-D space, such as 3-D velocity and acceleration, in 4-D space-time.
抄録全体を表示