Abstract:International audienceThe development of robust methods to identify which finger is causing each touch point, called “finger identification,” will open up a new input space where interaction designers can associate system actions to different fingers. However, relatively little is known about the performance of specific fingers as single touch points or when used together in a “chord.” We present empirical results for accuracy, throughput, and subjective preference gathered in five experiments with 48 particip… Show more
“…We also leveraged previous work when deciding to define a bimanual interaction style where the off-hand anchors and defines the task for the dominant hand [7,8,20,10].…”
Figure 1. Illustration of transient zooming. The user wants to precisely annotate the letter T (a); she bookmarks the starting viewport using her non-dominant hand (b), zooms in, (c) annotates the T (d), and then lifts her fingers to restore the bookmarked viewport (e). Normal operations can be performed before, during or after the bookmark operation.
ABSTRACTDespite the ubiquity of touch-based input and the availability of increasingly computationally powerful touchscreen devices, there has been comparatively little work on enhancing basic canonical gestures such as swipe-to-pan and pinch-to-zoom. In this paper, we introduce transient pan and zoom, i.e. pan and zoom manipulation gestures that temporarily alter the view and can be rapidly undone. Leveraging typical touchscreen support for additional contact points, we design our transient gestures such that they co-exist with traditional pan and zoom interaction. We show that our transient pan-and-zoom reduces repetition in multi-level navigation and facilitates rapid movement between document states. We conclude with a discussion of user feedback, and directions for future research.
“…We also leveraged previous work when deciding to define a bimanual interaction style where the off-hand anchors and defines the task for the dominant hand [7,8,20,10].…”
Figure 1. Illustration of transient zooming. The user wants to precisely annotate the letter T (a); she bookmarks the starting viewport using her non-dominant hand (b), zooms in, (c) annotates the T (d), and then lifts her fingers to restore the bookmarked viewport (e). Normal operations can be performed before, during or after the bookmark operation.
ABSTRACTDespite the ubiquity of touch-based input and the availability of increasingly computationally powerful touchscreen devices, there has been comparatively little work on enhancing basic canonical gestures such as swipe-to-pan and pinch-to-zoom. In this paper, we introduce transient pan and zoom, i.e. pan and zoom manipulation gestures that temporarily alter the view and can be rapidly undone. Leveraging typical touchscreen support for additional contact points, we design our transient gestures such that they co-exist with traditional pan and zoom interaction. We show that our transient pan-and-zoom reduces repetition in multi-level navigation and facilitates rapid movement between document states. We conclude with a discussion of user feedback, and directions for future research.
“…Physical motion involves the distance and precision with which a cursor needs to be moved, and has been used widely in studying humancomputer interaction tasks using Fitts' Law (e.g., [19], [20], [21]). …”
Section: Physical-motion Costs To Execute Sequencesmentioning
Abstract-The aim of the PETMiner software is to reduce the time and monetary cost of analysing petrophysical data that is obtained from reservoir sample cores. Analysis of these data requires tacit knowledge to fill 'gaps' so that predictions can be made for incomplete data. Through discussions with 30 industry and academic specialists, we identified three analysis use cases that exemplified the limitations of current petrophysics analysis tools. We used those use cases to develop nine core requirements for PETMiner, which is innovative because of its ability to display detailed images of the samples as data points, directly plot multiple sample properties and derived measures for comparison, and substantially reduce interaction cost. An 11-month evaluation demonstrated benefits across all three use cases by allowing a consultant to: (1) generate more accurate reservoir flow models, (2) discover a previously unknown relationship between one easy-to-measure property and another that is costly, and (3) make a 100-fold reduction in the time required to produce plots for a report.
“…Mc-Manus et al compared the fingers through the approach of motor control by measuring the inter-tap interval (the time between two consecutive finger taps) for all fingers [23]. Colley et al [3] and Goguey et al [7] compared their performance as well as users' preferences in Fitts' tasks. Roy et al also looked at their reaction times and error rates [28].…”
Atomic interactions in touch interfaces, like tap, drag, and flick, are well understood in terms of interaction design, but less is known about their physical performance characteristics. We carried out a study to gather baseline data about finger pitch and roll orientation during atomic touch input actions. Our results show differences in orientation and range for different fingers, hands, and actions, and we analyse the effect of tablet angle. Our data provides designers and researchers with a new resource to better understand what interactions are possible in different settings (e.g. when using the left or right hand), to design novel interaction techniques that use orientation as input (e.g. using finger tilt as an implicit mode), and to determine whether new sensing techniques are feasible (e.g. using fingerprints for identifying specific finger touches).
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