Illustrative halos in information visualization

ABSTRACT

In many interactive scenarios, the fast recognition and localization of crucial information is very important to effectively perform a task. However, in information visualization the visualization of permanently growing large data volumes often leads to a simultaneously growing amount of presented graphical primitives. Besides the fundamental problem of limited screen space, the effective localization of single or multiple items of interest by a user becomes more and more difficult. Therefore, different approaches have been developed to emphasize those items -- mainly by manipulating the items size, by suppressing the whole context or by adding supplemental visual elements (e.g., contours, arrows). This paper introduces the well known illustrative technique of haloing to information visualization to address the localization problem. Applying halos emphasizes items without a manipulation of size or an introduction of additional visual elements and reduces the context suppression to a locally defined region. This paper also presents the results of a first user-study to get an impression of the usefulness of halos for a faster recognition.

References

1. A. Appel, F. J. Rohlf, and A. J. Stein. The haloed line effect for hidden line elimination. In Proceedings of ACM SIGGRAPH'79, 1979.
2. S. Bruckner and E. Gröller. Enhancing depth-perception with flexible volumetric halos. In Proceedings of IEEE Visualization (Vis'07), 2007.
3. M. S. T. Carpendale, D. J. Cowperthwaite, and F. D. Fracchia. Distortion viewing techniques for 3-dimensional data. In Proceedings of the IEEE Symposium on Information Visualization (InfoVis'96), 1996.
4. D. Ebert and P. Rheingans. Volume illustration: Non-photorealistic rendering of volume models. In Proceedings of IEEE Visualization (VisŠOO), 2000.
5. G. W. Furnas. Generalized fisheye views. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI'86), 1986.
6. H. Hagh-Shenas, S. Kim, V. Interrante, and C. Healey. Weaving versus blending: a quantitative assessment of the information carrying capacities of two alternative methods for conveying multivariate data with color. In Proceedings of IEEE Information Visualization (InfoVis'07), 2007.
7. V. Interrante and C. Grosch. Strategies for effectively visualizing 3d flow with volume lic. In Proceedings of IEEE Visualization (Vis'97), 1997.
8. L. Li and H.-W. Shen. Image-based streamline generation and rendering. IEEE Transactions on Visualization and Computer Graphics, 13(3):630--640, 2007.
9. J. Loviscach. Stylized haloed outlines on the gpu. ACM SIGGRAPH '04 Poster, 2004.
10. T. Luft, C. Colditz, and O. Deussen. Image enhancement by unsharp masking the depth buffer. In Proceeding of ACM SIGGRAPH'06, 2006.
11. B. Preim, C. Tietjen, and C. Doerge. Npr, focussing and emphasis in medical visualizations. In Proceedings of Simulation und Visualisierung, 2005.
12. C. Stoll, S. Gumhold, and H.-P. Seidel. Visualization with stylized line primitives. In Proceedings of IEEE Visualization (Vis'05), 2005.
13. N. A. Svakhine and D. S. Ebert. Interactive volume illustration and feature halos. In Proceedings of the 11th Pacific Conference on Computer Graphics and Applications (PG'03), 2003.
14. C. Waters and T. J. Jankun-Kelly. Illustrative rendering for information visualization. IEEE InfoVis'06 Poster, Oct. 2006.

Index Terms

• Human-centered computing

  • Human computer interaction (HCI)