11 citations · 19 across the 16 of their papers we have counts for
12 papers · 1 filter
Blur Effects on User Performance in Target-Pointing Tasks
Ryuto Tomihari, Taiki Kinoshita, Yosuke Oba +2
In projectors and head-mounted displays, an out-of-focus image appears blurred. Even when a display itself is in focus, computer operation may be hindered if the display is far fro…
Skewed Dual Normal Distribution Model: Predicting Touch Pointing Success Rates for Targets Near Screen Edges and Corners
Nobuhito Kasahara, Shota Yamanaka, Homei Miyashita
Typical success-rate prediction models for tapping exclude targets near screen edges. However, design constraints often force such placements, and in scrollable user interfaces, an…
Skewed Dual Normal Distribution Model: Predicting 1D Touch Pointing Success Rate for Targets Near Screen Edges
Nobuhito Kasahara, Shota Yamanaka, Homei Miyashita
Typical success-rate prediction models for tapping exclude targets near screen edges; however, design constraints often force such placements. Additionally, in scrollable UIs any e…
Improving Data Quality via Pre-Task Participant Screening in Crowdsourced GUI Experiments
Takaya Miyama, Satoshi Nakamura, Shota Yamanaka
In crowdsourced user experiments that collect performance data from graphical user interface (GUI) interactions, some participants ignore instructions or act carelessly, threatenin…
Normalizing Speed-accuracy Biases in 2D Pointing Tasks with Better Calculation of Effective Target Widths
Shota Yamanaka, I. Scott MacKenzie
For evaluations of 2D target selection using Fitts' law, ISO 9241-411 recommends using the effective target width (W_e) calculated using the univariate standard deviation of select…
A Tool for Estimating Success Rates of Raycasting-Based Object Selection in Virtual Reality
Tatsuya Okuno, Haruto Shimizu, Nobuhito Kasahara +3
As XR devices become widespread, 3D interaction has become commonplace, and UI developers are increasingly required to consider usability to deliver better user experiences. The HC…
Tappy Plugin for Figma: Predicting Tap Success Rates of User-Interface Elements under Development for Smartphones
Shota Yamanaka, Hiroki Usuba, Junichi Sato +3
Tapping buttons and hyperlinks on smartphones is a fundamental operation, but users sometimes fail to tap user-interface (UI) elements. Such mistakes degrade usability, and thus it…
Single-tap Latency Reduction with Single- or Double- tap Prediction
Naoto Nishida, Kaori Ikematsu, Junichi Sato +2
Touch surfaces are widely utilized for smartphones, tablet PCs, and laptops (touchpad), and single and double taps are the most basic and common operations on them. The detection o…
Tappy: Predicting Tap Accuracy of User-Interface Elements by Reverse-Engineering Webpage Structures
Hiroki Usuba, Junichi Sato, Naomi Sasaya +2
Selecting a UI element is a fundamental operation on webpages, and the ease of tapping a target object has a significant impact on usability. It is thus important to analyze existi…
Error-rate Prediction for Mouse-based Rectangular-target Pointing with no Knowledge of Movement Angles
Shota Yamanaka
In rectangular-target pointing, movement angles towards targets are known to affect error rates. When designers determine target sizes, however, they would not know the frequencies…
Interaction Design of Dwell Selection Toward Gaze-based AR/VR Interaction
Toshiya Isomoto, Shota Yamanaka, Buntarou Shizuki
In this paper, we first position the current dwell selection among gaze-based interactions and its advantages against head-gaze selection, which is the mainstream interface for HMD…
Computing Touch-Point Ambiguity on Mobile Touchscreens for Modeling Target Selection Times
Shota Yamanaka, Hiroki Usuba
Finger-Fitts law (FFitts law) is a model to predict touch-pointing times, modified from Fitts' law. It considers the absolute touch-point precision, or a finger tremor factor sigma…