Study and Evaluation of Separability Techniques and Occlusion in Multitouch Surfaces (original) (raw)

Abstract

Multitouch interfaces allow interacting with a virtual object directly, similar to a real object. However, there are several issues to be resolved, such as the accuracy of the manipulation, the occlusion, the separability of the manipulation, etc. Multitouch interfaces allow multiple spatial transformations that can be performed on a virtual object with only a gesture. For example, an object can be rotated, translated and scaled with two fingers with a single gesture. However, some unwanted movements may occur accidentally. Separability techniques appear with the intent to prevent unwanted movements on multitouch surfaces. Occlusion is another problem that occurs in multitouch interfaces. Often the user's hand hides the vision of the object with which he/she interacts; or the user's action on interface hinders the movement when it clicks on a bottom that triggers action. This paper proposes two techniques of separability, aiming to reduce the problems that arise due to excessive freedom of manipulation in multi-touch interfaces, and evaluates the efficiency of these techniques. The techniques developed are not only applicable in simple virtual objects; they are also for WIMP (windows, icons, menus, pointer) objects, aiming to reduce occlusion. A series of tests was performed to evaluate precision, occlusion time for completion of task, and ease of use.

Loading...

Loading Preview

Sorry, preview is currently unavailable. You can download the paper by clicking the button above.

References (17)

  1. Nacenta, M., Baudish, P., Banko, H., Wilson, A.: Separability of spatial manipulations in multi-touch interfaces, pp. 175-182 (2009)
  2. Wigdor, D., Benko, J., Pella, J., Lomabardo, J., Williams, S.: Rock & rails: Extending multi-touch interactions with shape gestures to enable precise spatial manipulations. In: SIGCHI Conference on Human Factors in Computing Systems, pp. 1581-1590 (2011)
  3. Wu, M., Balakrishnan, R.: Multi-Finger and Whole Hand Gestural Interaction Techniques for Multi-User Tabletop Displays. In: Proceedings of the 16th Annual ACM Symposium on User Interface Software and Technology, pp. 193-202 (2003)
  4. Dietz, P.: DiamondTouch: A Multi-User Touch Technology. In: Proceedings of UIST, pp. 219-226 (2001)
  5. Kruger, R., Carpendale, S., Scott, S.D., Tang, A.: Fluid integration of rotation and translation. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 601-610 (2005)
  6. Wobbrock, J.O., Morris, M.R., Wilson, A.D.: User-defined gestures for surface computing. In: Proceedings of the 27th International Conference on Human Factors in Computing Systems, pp. 1083-1092 (2009)
  7. Moscovich., T., Hughes, J.F.: Multi-finger Cursor Techniques. In: Proceedings of Graphics Interface, pp. 1-7 (2006)
  8. Hancock, M., Ten Cate, T., Carpendale, S.: Sticky tools: Full 6DOF force-based interaction for multi-touch tables. In: Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces, pp. 133-140 (2009)
  9. Ashtiani., B., Stuerzlinger, W.: 2D similarity transformations on multi-touch surfaces. In: Proceedings of Graphics Interface, pp. 57-64 (2011)
  10. Vogel, D., Casiez, G.: Hand Occlusion on a Multi-Touch Tabletop. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 2307-2316 (2012)
  11. Vogel, D., Baudisch, P.: Shift: A technique for operating pen-based interfaces using touch. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 657-666 (2007)
  12. Roudaut, A., Huot, S., Lecolinet, E.: TapTap and MagStick: Improving One-Handed Target Acquisition on Small Touch-screens. In: Proceedings of the Working Conference on Advanced Visual Interfaces, pp. 146-153 (2008)
  13. Brandl, P., Leitner, J., Seifried, T., Haller, M., Doray, B., To, P.: Occlusion-aware menu design for digital tabletops. In: Proceeding of CHI 2009 Extended Abstracts on Human Factors in Computing Systems, pp. 3223-3228 (2009)
  14. Potter, R.L., Weldon, L.J., Shneiderman, B.: Improving the Accuracy of Touchscreens: An Experimental Evaluation of Three Strategies. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 27-32 (1988)
  15. Apted, T., Kay, J., Quigley, A.: Tabletop sharing of digital photographs for the elderly. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 781-790 (2006)
  16. Wigdor, D., Williams, S., Cronin, M., Levy, R., White, K., Mazeev, M., Benko, H.: Ripples: Utilizing per-contact visualizations to improve user interaction with touch displays. In: Proceedings of the 22nd Annual ACM Symposium on User Interface Software and Technology, pp. 3-12 (2009)
  17. Wang, F., Ren, X.: Empirical Evaluation for Finger Input Properties in Multi-touch Interaction. In: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pp. 1063-1072 (2009)