PressureFish: A Method to Improve Control of Discrete Pressure-based Input

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Abstract

Studies investigating user control of pressure input have reported time-accuracy trade-offs of, on average, over 30%, when interacting with a large number of pressure levels. To increase the level of control with pressure input, we designed and evaluated four different discretization functions: linear, fisheye, visual fisheye, and clustered. The fisheye discretization dynamically modifies the range of pressure values based on the position of the pressure cursor. Our results show that a fisheye function results in significantly lower error rates and a lower number of crossings than have been reported in the literature. Furthermore, the fisheye function improves control without compromising speed. We discuss the findings of our study and identify several design recommendations for integrating pressure control into common interface tasks.

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Publisher Link

http://dx.doi.org/10.1145/1357054.1357256

Citation

Kang Shi, Pourang Irani, Sean Gustafson and Sriram Subramanian. 2008. PressureFish: A Method to Improve Control of Discrete Pressure-based Input. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '08), 1295-1298.

Bibtext Entry

@INPROCEEDINGS { shi08,
    AUTHOR = { Kang Shi and Pourang Irani and Sean Gustafson and Sriram Subramanian },
    TITLE = { PressureFish: A Method to Improve Control of Discrete Pressure-based Input },
    BOOKTITLE = { Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '08) },
    YEAR = { 2008 },
    PAGES = { 1295--1298 },
    DOI = { 10.1145/1357054.1357256 },
}