stanford hci group 30 June 2015 CINCH David Akers a cooperatively designed marking interface for 3D pathway selection

2 The Human Brain white matter

3 Estimated Pathways

4 Pathway Selection DTI-Query [Akers et al. 2004, Sherbondy, et al. 2005]

5 Background brain imaging and pathway selection Design Process Wizard of Oz prototype The CINCH System demonstration and implementation details Design Implications reflections on design process Outline

6 Touch

7 Shape Match

8 An Interface Design Quandary How to develop a marking language that is both: Useful to scientists (solves their selection problems) Intuitive to scientists (matches their mental model)

9 Whiteboard Explorations

10 Wizard of Oz Prototype Scientists invent their own marking operations Wizard modeUser mode Designer simulates the effects, using a crude but functional interface

11 Wizard of Oz Prototype [ Live Demo ]

12 Marking Operations Invented shape matchingtouchsurface intersection Selection modes: Add, Remove, Intersect

13 Design Principles Minimality Remove unnecessary parameters whenever possible. Visibility Marks should only affect pathways on the visible side of each cutting plane.

14 The CINCH Interface [ Demo Video ]

15 The CINCH Interface

16 Details: Shape Match 3D pathway (projected) Gestural mark Distance metric: Mean closest points

17 Details: Grow/Shrink Distance to selection Distance matrix

18 Related Work 3D modeling interfaces  Sketch [Zeleznik et al. 1996]  Teddy [Igarashi et al. 1999] 3D selection interfaces  SenseShapes [Olwal et al. 1999]  Volume Catcher [Owada et al. 2003] Participatory design  Cooperative Prototyping [Bødker and Grønbæk 1989]

19 CINCH In Use CINCH was evaluated using: Event logs Screen Captures Interviews Scientists self-reported 2-5 times speedup when using CINCH. CINCH has been adopted and is being used actively.

20 Final Thoughts

21 Acknowledgments Computer Science Scott Klemmer (Stanford U.) Tomer Moscovich (Brown U.) Neuroscience Brian Wandell (Stanford U.) All the participants in our experiments Sponsors NIH (EY ) Charles A. Dana Foundation ( )

stanford hci group jects/dti Questions? David Akers u