Using Distortion in 3D Using Distortion in 3D Sheelagh Carpendale - PDF document

Using Distortion in 3D Using Distortion in 3D Sheelagh Carpendale Sheelagh Carpendale University of Calgary University of Calgary Issues • occlusion • context • view operations • comprehension 1

3D Visual Representations 3D Visual Representations 3D Representations stretch sine radial step stretch sine radial step 2

Displacement Only stretch sine radial step stretch sine radial step Viewer Aligned Distortion stretch radial stretch radial 3

Viewer Aligned Distortion start - select start - select for each point for each point - find line-of-sight - find line-of-sight -find shortest distance -find shortest distance to line-of-sight to line-of-sight Viewer Aligned Distortion 4

Viewer Aligned Distortion Viewer Aligned Distortion 5

More than one focus More than one focus Viewer Aligned Distortion 6

References • S. Carpendale, D. J. Cowperthwaite and F. D. Fracchia (1997) Extending Distortion Viewing Techniques from 2D to 3D Data. IEEE Computer Graphics and Applications, Special Issue on Information Visualization, 17(4):42-51, 1997. • Furnas, G. W., & Bederson, B. B. (1995). Space-Scale Diagrams: Understanding Multiscale Interfaces . In Proceedings of Human Factors in Computing Systems (CHI 95) ACM Press, pp. 234-241. 7