Establishing Vibration-Based Tactile Line Profiles for Use in Multimodal Graphics

Establishing Vibration-Based Tactile Line Profiles for Use in Multimodal Graphics
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建立用于多模态图形的基于振动的触觉线轮廓

DOI:
10.1145/3383457
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发表时间:
2020
影响因子:
1.6
通讯作者:
Gorlewicz, Jenna L.
Gorlewicz, Jenna L.
中科院分区:
计算机科学4区
文献类型:
--
作者:
Tennison, Jennifer L.;Uesbeck, P. Merlin;Giudice, Nicholas A.;Stefik, Andreas;Smith, Derrick W.;Gorlewicz, Jenna L.

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振动在用户与触摸屏交互的方式中起着重要作用。对于许多用户来说,振动提供了触觉警报和其他增强功能。对于没有眼睛的用户和有视觉障碍的用户,振动也可以在用户界面中发挥更重要的作用,例如在地图上指示街道,传达有关图形的信息,甚至指定基本图形。然而,除了基本的提示之外,振动很少用于当前的用户界面。此外,由于开箱即用的软件和硬件限制,实际上更广泛地使用振动的设计师和开发人员通常无法确定他们正在实现的振动信号的确切特性。我们在这项工作中做出了两个贡献。首先,我们研究触摸屏振动的上下文属性,以及如何使用振动来有效地传达传统的浮雕元素,如破折号和圆点。为此,我们开发了一个基于Android的开源库,以生成感知突出和直观的振动,改进现有的振动库。其次,我们进行了一项用户研究,26名盲人或视力受损的用户进行评估和分类的影响,相对于传统的触觉线轮廓。我们已经建立了一系列振动效果,这些效果可以由我们的触觉库可靠地生成,并且可以被用户感知和区分。
Vibration plays a significant role in the way users interact with touchscreens. For many users, vibration affords tactile alerts and other enhancements. For eyes-free users and users with visual impairments, vibration can also serve a more primary role in the user interface, such as indicating streets on maps, conveying information about graphs, or even specifying basic graphics. However, vibration is rarely used in current user interfaces beyond basic cuing. Furthermore, designers and developers who do actually use vibration more extensively are often unable to determine the exact properties of the vibration signals they are implementing, due to out-of-the-box software and hardware limitations. We make two contributions in this work. First, we investigate the contextual properties of touchscreen vibrations and how vibrations can be used to effectively convey traditional, embossed elements, such as dashes and dots. To do so, we developed an open source, Android-based library to generate vibrations that are perceptually salient and intuitive, improving upon existing vibration libraries. Second, we conducted a user study with 26 blind or visually impaired users to evaluate and categorize the effects with respect to traditional tactile line profiles. We have established a range of vibration effects that can be reliably generated by our haptic library and are perceptible and distinguishable by users.
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