Presentation at CHI 2008 in Florence, Italy. For the paper and video go to: http://www.gustaf.ca/PubSummary/gustafson08

1. wedge Sean Gustafson Patrick Baudisch Carl Gutwin Pourang Irani clutter-free visualization of off-screen locations

2. wedge halo: clutter problem wedge: avoids overlap

3. ated work rel

4. overviews [Plaisant 95 and many others]

5. fisheye views fisheye views [Carpendale 01]

6. [Gustafson 07] edgeradar

7. simple arrows [Tecmo Bowl 87]

8. scaled and stretched arrows [Burigat 06]

9. “ space-efficient fisheye technique” city lights [Mackinlay 03]

10. [Baudisch 03] halo

11. [Baudisch 03] halo

12. e problem th

13. the problem: clutter

14. the problem: clutter

15. (also not great: corners) corner side

16. cut lines color ovals clustering Irani et al. Baudisch & Rosenholtz initial approaches separate visually

18. e wedge th

19. leg leg target base base base base wedge

20. halo wedge

21. 3 degrees of freedom rotation aperture intrusion

22. avoiding overlap intrusion rotation aperture

23. out algorithm lay

24. avoidance algorithm

25. avoidance algorithm

26. avoidance algorithm

27. avoidance algorithm

28. avoidance algorithm

29. leaves 2 degrees intrusion ~ distance base-width ~ distance

30. wedge demo

31. ser study u

33. halo task 1: locate wedge same as original halo paper

34. halo task 2: closest wedge same as original halo paper

35. halo task 3: avoid wedge same as original halo paper

36. IV: density sparse dense

37. 16 participants

39. results

42. error in pixels 60 40 20 0 Sparse Dense Side Wedge Halo locate task

43. error in pixels Sparse Dense 60 40 20 0 Sparse Dense Side Corner Wedge Halo locate task

45. fied pointing uni wedge=

46. intrusion  0 citylights

47. aperture  0 stretched arrows

48. ? halo

49. round bases distance information in corner distance information along arc

50. halo aperture  360

51. eling pointing mod

52. better layout than this? ?

54. beam

55. beam

56. beam beam

57. orbital beam beam

58. intrusion

59. intrusion

60. aperture

61. aperture

62. rotation

63. rotation

65. thanks Sean Gustafson http://www.gustaf.ca/

68. recent results post-publication 20 more participants locate task Sparse Dense Error (pixels) 80 60 40 20 0 Sparse Dense Side Corner Wedge Halo

69. recent results post-publication 20 more participants Sparse Dense Error Rate 60% 40% 20% 0% Sparse Dense Side Corner Wedge Halo closest task