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New Metrics for Understanding Touch by People with and without Limited Fine Motor Function 理解有或没有精细运动功能限制的人触摸的新指标
Junhan Kong, Mingyuan Zhong, J. Fogarty, J. Wobbrock
Current performance measures with touch-based systems usually focus on overall performance, such as touch accuracy and target acquisition speed. But a touch is not an atomic event; it is a process that unfolds over time, and this process can be characterized to gain insight into users’ touch behaviors. To this end, our work proposes 13 target-agnostic touch performance metrics to characterize what happens during a touch. These metrics are: touch direction, variability, drift, duration, extent, absolute/signed area change, area variability, area deviation, absolute/signed angle change, angle variability, and angle deviation. Unlike traditional touch performance measures that treat a touch as a single (x, y) coordinate, we regard a touch as a time series of ovals that occur from finger-down to finger-up. We provide a mathematical formula and intuitive description for each metric we propose. To evaluate our metrics, we run an analysis on a publicly available dataset containing touch inputs by people with and without limited fine motor function, finding our metrics helpful in characterizing different fine motor control challenges. Our metrics can be useful to designers and evaluators of touch-based systems, particularly when making touch screens accessible to all forms of touch.
当前基于触控系统的性能测量通常侧重于整体性能,如触控精度和目标获取速度。但触摸不是原子事件;这是一个随着时间的推移而展开的过程,我们可以通过描述这个过程来洞察用户的触摸行为。为此,我们的工作提出了13个与目标无关的触摸性能指标来描述触摸过程中发生的事情。这些指标是:触摸方向、可变性、漂移、持续时间、范围、绝对/符号面积变化、面积可变性、面积偏差、绝对/符号角度变化、角度可变性和角度偏差。与传统的将触摸视为单个(x, y)坐标的触摸性能测量不同,我们将触摸视为从手指向下到手指向上发生的椭圆时间序列。我们为我们提出的每个度量提供了一个数学公式和直观的描述。为了评估我们的指标,我们对一个公开可用的数据集进行了分析,该数据集包含有或没有精细运动功能限制的人的触摸输入,发现我们的指标有助于表征不同的精细运动控制挑战。我们的指标对基于触控系统的设计师和评估人员很有帮助,特别是在让所有触控形式都能接触到触摸屏的时候。
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引用次数: 2
How Online Tests Contribute to the Support System for People With Cognitive and Mental Disabilities 在线测试如何为认知和精神残疾者的支持系统做出贡献
Qisheng Li, Josephine Lee, C. Zhang, Katharina Reinecke
Roughly 1 in 3 people around the world are affected by cognitive or mental disabilities at some point in their lives, yet people often face a variety of barriers when seeking support and receiving diagnosis from healthcare professionals. While prior work found that people with such disabilities assess themselves using online tests and assessments, it remains unknown whether and how effectively these tests fill gaps in healthcare and general support systems. To find out, we interviewed 17 adults with cognitive or mental disabilities about their motivation for and experience using online tests. We learned that online tests act as an important resource that address the shortcomings in support systems for people with professionally diagnosed or suspected cognitive or mental disabilities. In particular, online tests can lower barriers to a professional diagnosis, provide valuable information about the nuances of a disability, and support people in forming a disability identity – an invaluable step towards a positive acceptance of oneself. Our results also uncovered challenges and risks that prevent people with known or suspected health conditions from fully taking advantage of online tests. Based on these findings, we discuss how online tests can be better leveraged to support people with cognitive or mental disabilities before and after professional diagnosis.
全世界大约有三分之一的人在其生命的某个阶段受到认知或精神残疾的影响,但人们在寻求支持和接受医疗保健专业人员的诊断时往往面临各种障碍。虽然先前的研究发现,这些残疾人使用在线测试和评估来评估自己,但这些测试是否以及如何有效地填补了医疗保健和一般支持系统的空白,仍不得而知。为了找到答案,我们采访了17名有认知或精神障碍的成年人,了解他们使用在线测试的动机和体验。我们了解到,在线测试是一种重要的资源,可以解决专业诊断或怀疑患有认知或精神残疾的人的支持系统中的缺陷。特别是,在线测试可以降低专业诊断的障碍,提供有关残疾细微差别的宝贵信息,并支持人们形成残疾身份——这是积极接受自己的宝贵一步。我们的研究结果还揭示了阻碍已知或疑似健康状况的人充分利用在线测试的挑战和风险。基于这些发现,我们讨论了如何更好地利用在线测试在专业诊断之前和之后为患有认知或精神残疾的人提供支持。
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引用次数: 3
Investigating the Navigational Habits of People who are Blind in India 调查印度盲人的导航习惯
Anirudh Nagraj, Ravi Kuber, Foad Hamidi, Raghavendra S. G. Prasad
Assistive navigational technologies offer considerable promise to people who are blind. However, uptake of these technologies has traditionally been lower in low and middle income countries (LMICs), where levels of investment and maintenance in infrastructure differ from upper middle (UMICs) and high income countries (HICs). In this paper, we describe a qualitative study undertaken with 14 people who identify as legally-blind in an LMIC (India) to understand their experiences and strategies used when navigating within a metropolitan area. We highlight a set of scenarios impacting people who are blind within the context studied. These include crossing busy highways, navigating in the rainy season, collaborating with others to navigate at night, and using older public transportation. Our work brings attention to areas where the latest successful and well-publicized innovations in blind navigation may fall short when used in an Indian metropolitan area. We suggest that designers should be cognizant of the role that infrastructure (particularly its shortcomings) and environmental factors may play when navigating in LMICs such as India, with a view to designing assistive navigational technologies to better match the needs of users within these contexts.
辅助导航技术为盲人带来了巨大的希望。然而,这些技术在低收入和中等收入国家(LMICs)的使用率一直较低,这些国家的基础设施投资和维护水平与中高收入国家(UMICs)和高收入国家(HICs)不同。在本文中,我们描述了一项定性研究,对14名在LMIC(印度)认定为法定盲人的人进行了研究,以了解他们在大都市地区导航时的经历和使用的策略。我们强调了在研究的背景下影响盲人的一系列场景。这些措施包括穿越繁忙的高速公路,在雨季导航,与他人合作在夜间导航,以及使用旧的公共交通工具。我们的工作引起了人们的注意,在印度大都市地区,最新成功和广泛宣传的盲人导航创新可能会有所不足。我们建议设计人员应该认识到基础设施(特别是其缺点)和环境因素在印度等中低收入国家导航时可能发挥的作用,以便设计辅助导航技术,以更好地满足这些背景下用户的需求。
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引用次数: 3
Clew3D: Automated Generation of O&M Instructions Using LIDAR-Equipped Smartphones Clew3D:使用配备激光雷达的智能手机自动生成操作和维护指令
Hwei-Shin Harriman, D. Ahmetovic, S. Mascetti, D. Moyle, Michael Evans, P. Ruvolo
Certified orientation and mobility specialists (COMS) work with clients who are blind or visually impaired (BVI) to help them travel independently with confidence. Part of this process involves creating a narrative description of a route and using specific techniques to help the client internalize it. We focus on the problem of automatically generating a narrative description of an indoor route based on a recording from a smartphone. These automatically generated narrations could be used in cases where a COMS is not available or to enable clients to independently practice routes that were originally learned with the help of a COMS. Specifically, we introduce Clew3D, a mobile app that leverages LIDAR-equipped iOS devices to identify orientation and mobility (O&M) landmarks and their relative location along a recorded route. The identified landmarks are then used to provide a spoken narration modeled after traditional O&M techniques. Our solution is co-designed with COMS and uses methods and language that they employ when creating route narrations for their clients. In addition to presenting Clew3D, we report the results of an analysis conducted with COMS regarding techniques and terminology used in traditional, in-person O&M instruction. We also discuss challenges posed by vision-based systems to achieve automatic narrations that are reliable. Finally, we provide an example of an automatically generated route description and compare it with the same route provided by a COMS.
经过认证的定向和移动专家(COMS)与盲人或视障人士(BVI)合作,帮助他们自信地独立旅行。这个过程的一部分包括创建路线的叙述性描述,并使用特定的技术来帮助客户内化它。我们专注于基于智能手机的记录自动生成室内路线的叙述性描述的问题。这些自动生成的叙述可以在没有COMS的情况下使用,或者使客户能够独立地练习最初在COMS的帮助下学习的路线。具体来说,我们介绍了Clew3D,这是一款移动应用程序,它利用配备激光雷达的iOS设备来识别方向和移动(O&M)地标,以及它们在记录路线上的相对位置。然后,识别出的地标被用来提供模仿传统运维技术的口头叙述。我们的解决方案是与COMS共同设计的,并使用他们在为客户创建路由叙述时使用的方法和语言。除了介绍Clew3D之外,我们还报告了与COMS一起进行的关于传统现场操作和维护教学中使用的技术和术语的分析结果。我们还讨论了基于视觉的系统在实现可靠的自动叙述方面所面临的挑战。最后,我们提供了一个自动生成路由描述的示例,并将其与COMS提供的相同路由进行了比较。
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引用次数: 2
An Intelligent Math E-Tutoring System for Students with Specific Learning Disabilities 面向特殊学习障碍学生的智能数学网络辅导系统
Z. Wen, Yuhang Zhao, Erica Silverstein, Shiri Azenkot
Students with specific learning disabilities (SLDs) often experience negative emotions when solving math problems, which they have difficulty managing. This is one reason that current math e-learning tools, which elicit these negative emotions, are not effective for these students. We designed an intelligent math e-tutoring system that aims to reduce students’ negative emotional behaviors. The system automatically detects possible negative emotional behaviors by analyzing gaze, inputs on the touchscreen, and response time. It then uses one of four intervention methods (e.g., hints or brain breaks) to prevent students from being upset. To form this design, we conducted a formative study with five teachers for students with SLDs. The teachers thought that the design of four intervention methods would help students with SLDs. Among the four intervention methods, providing brain breaks is new and particularly useful for the students. The teachers also suggested that the system should personalize the detection of negative emotional behaviors to help students who have more severe learning disabilities.
患有特殊学习障碍(SLDs)的学生在解决数学问题时经常会经历负面情绪,他们很难处理这些情绪。这就是目前的数学电子学习工具对这些学生无效的原因之一,这些工具会引发这些负面情绪。我们设计了一个智能数学电子辅导系统,旨在减少学生的消极情绪行为。该系统通过分析凝视、触摸屏上的输入和反应时间,自动检测可能的负面情绪行为。然后,它使用四种干预方法中的一种(例如,暗示或大脑休息)来防止学生感到不安。为了形成这个设计,我们和五位老师一起对有特殊障碍的学生进行了形成性研究。教师们认为四种干预方法的设计能够帮助有特殊学习障碍的学生。在四种干预方法中,提供大脑休息是一种新的方法,对学生特别有用。老师们还建议,该系统应该个性化消极情绪行为的检测,以帮助那些有更严重学习障碍的学生。
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引用次数: 2
At a Different Pace: Evaluating Whether Users Prefer Timing Parameters in American Sign Language Animations to Differ from Human Signers’ Timing 以不同的速度:评估用户是否喜欢美国手语动画中的时间参数不同于人类手语的时间
Sedeeq Al-khazraji, Becca Dingman, Sooyeon Lee, Matt Huenerfauth
Adding American Sign Language (ASL) versions of information content to websites can improve information accessibility for many people who are Deaf or Hard of Hearing (DHH) who may have lower levels of English literacy. Generating animations from a script representation would enable this content to be easily updated, yet software is needed that can set detailed speed and timing parameters for such animations, which prior work has revealed to be critical for their understandability and acceptance among DHH users. Despite recent work on predicting these parameters using AI models trained on recordings of human signers, no prior work had examined whether DHH users actually prefer for these speed and timing properties to be similar to humans, or to be exaggerated, e.g. for additional clarity. We conducted two empirical studies to investigate preferences of ASL signers for speed and timing parameters of ASL animations, including: sign duration, transition time, differential signing rate, pause length, and pausing frequency. Our first study (N=20) identified two preferred values from among five options for each parameter, one of which included a typical human value for this parameter, and a second study (N=20) identified the most preferred value. We found that while ASL signers preferred pause length and frequency to be similar to those of humans, they actually preferred animations to have faster signs, slower transitions, and less dynamic variation in differential signing speed, as compared to the timing of human signers. This study provides specific empirical guidance for creators of future ASL animation technologies, and more broadly, it demonstrates that it is not safe to assume that ASL signers will simply prefer for properties of ASL animations to be as similar as possible to human signers.
在网站上添加美国手语(ASL)版本的信息内容可以提高许多聋人或重听人(DHH)的信息可访问性,这些人的英语读写水平可能较低。从脚本表示生成动画将使这些内容易于更新,但是需要软件来为这些动画设置详细的速度和时间参数,之前的工作已经表明,这对于DHH用户的可理解性和接受度至关重要。尽管最近有研究使用人工智能模型来预测这些参数,但之前没有研究过DHH用户是否真的喜欢这些速度和时间属性与人类相似,或者为了更清晰而夸大。本文通过两项实证研究,探讨了手语使用者对手语动画的速度和时间参数的偏好,包括:手语持续时间、转换时间、差异签名率、暂停长度和暂停频率。我们的第一项研究(N=20)从每个参数的五个选项中确定了两个首选值,其中一个包括该参数的典型人类值,第二项研究(N=20)确定了最优选值。我们发现,虽然手语使用者更喜欢与人类相似的停顿长度和频率,但与人类手语使用者的时间相比,他们实际上更喜欢具有更快的手势、更慢的转换和更少动态变化的不同手势速度的动画。这项研究为未来的ASL动画技术的创造者提供了具体的经验指导,更广泛地说,它表明,假设ASL手语使用者会简单地希望ASL动画的属性尽可能地与人类手语使用者相似是不安全的。
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引用次数: 9
Disability-first Dataset Creation: Lessons from Constructing a Dataset for Teachable Object Recognition with Blind and Low Vision Data Collectors 残障优先数据集创建:基于盲人和低视力数据收集器构建可教对象识别数据集的经验教训
Lida Theodorou, Daniela Massiceti, L. Zintgraf, S. Stumpf, C. Morrison, Edward Cutrell, Matthew Tobias Harris, Katja Hofmann
Artificial Intelligence (AI) for accessibility is a rapidly growing area, requiring datasets that are inclusive of the disabled users that assistive technology aims to serve. We offer insights from a multi-disciplinary project that constructed a dataset for teachable object recognition with people who are blind or low vision. Teachable object recognition enables users to teach a model objects that are of interest to them, e.g., their white cane or own sunglasses, by providing example images or videos of objects. In this paper, we make the following contributions: 1) a disability-first procedure to support blind and low vision data collectors to produce good quality data, using video rather than images; 2) a validation and evolution of this procedure through a series of data collection phases and 3) a set of questions to orient researchers involved in creating datasets toward reflecting on the needs of their participant community.
可访问性人工智能(AI)是一个快速发展的领域,需要包含辅助技术旨在服务的残疾用户的数据集。我们提供了一个多学科项目的见解,该项目构建了一个数据集,用于盲人或低视力人群的可教物体识别。可教对象识别使用户可以通过提供对象的示例图像或视频来教模型他们感兴趣的对象,例如他们的白色手杖或自己的太阳镜。在本文中,我们做出了以下贡献:1)残障优先程序,以支持盲人和低视力数据采集人员产生高质量的数据,使用视频而不是图像;2)通过一系列数据收集阶段验证和发展这一程序;3)提出一系列问题,引导参与创建数据集的研究人员反映其参与者社区的需求。
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引用次数: 19
Towards Using Live Photos to Mitigate Image Quality Issues In VQA Photography 朝着使用实时照片,以减轻图像质量问题在VQA摄影
Lauren Olson, C. Kambhamettu, Kathleen F. McCoy
Studies show Visual Question Answering (VQA) systems are valuable tools for people with visual impairments to quickly obtain information from an image. In this poster, we present our ongoing work towards developing uses of live photos to mitigate quality issues in photography from people with visual impairments for VQA. New contributions building on our prior research include an expanded live photos dataset, a more in-depth analysis of VQA results, and an analysis of features of our live photos compared with existing data collected from people with visual impairments. We show that live photos are a promising method for improving accuracy of VQA and that our sample live photos mimic the types of images taken in real-world settings by people with visual impairments for the task of VQA.
研究表明,视觉问答(VQA)系统是有视觉障碍的人从图像中快速获取信息的有价值的工具。在这张海报中,我们展示了我们正在进行的工作,即开发实时照片的使用,以减轻视障人士在VQA中拍摄的质量问题。我们在先前研究的基础上做出了新的贡献,包括扩展了实时照片数据集,对VQA结果进行了更深入的分析,并将我们的实时照片的特征与从视觉障碍人士那里收集的现有数据进行了比较。我们表明,实时照片是提高VQA准确性的一种有前途的方法,并且我们的样本实时照片模拟了视觉障碍者在现实环境中为VQA任务拍摄的图像类型。
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引用次数: 1
Making Math Graphs More Accessible in Remote Learning: Using Sonification to Introduce Discontinuity in Calculus 使数学图在远程学习中更容易理解:使用声波在微积分中引入不连续
Keita Ohshiro, Amy Hurst, R. DuBois
Math graphs need to be accessible to People with Visual Impairments (PVI). While tactile graphics are a common way for PVI to access math graphs, their use becomes complicated in remote learning. To make math graphs more accessible in remote education, we focused on sonification, the use of non-speech sound. In this study, we designed techniques of sonification of math graphs to introduce the concept of discontinuity in calculus to PVI. First, we conducted a remote interview with six participants to understand their experiences with math education using graphs. Based on these findings, we developed a series of sonifications of math graphs that we remotely evaluated with three participants from our initial interviews. Our findings reveal that sonification can intuitively convey simple patterns and trends in math graphs with a little practice, be useful to introduce the discontinuities, and be more effective with descriptions of the sound and graphs.
数学图形需要对视障人士(PVI)无障碍。虽然触觉图形是PVI访问数学图形的常用方法,但在远程学习中,触觉图形的使用变得复杂。为了使数学图表在远程教育中更容易理解,我们专注于声音化,即非语音的使用。在本研究中,我们设计了数学图的声音化技术,将微积分中的不连续概念引入PVI。首先,我们对六名参与者进行了远程访谈,以了解他们使用图表进行数学教育的经验。基于这些发现,我们开发了一系列数学图形的声音,我们从最初的访谈中对三个参与者进行了远程评估。我们的研究结果表明,经过少量的练习,声化可以直观地传达数学图形中的简单模式和趋势,有助于引入不连续点,并且更有效地描述声音和图形。
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引用次数: 8
Towards a Secured and Safe Online Social Media Design Framework for People with Intellectual Disability 为智障人士打造一个安全可靠的在线社交媒体设计框架
Ya-Wen Chang, Laurianne Sitbon, L. Simpson
This paper aims to create a tangible design framework for practitioners to follow when designing an online social media platform for individuals with intellectual disability. Currently, legislation and best practice consider cyber security and safety for the general public, giving particular attention to the protection of children. However, despite the support in health care, financial assistance, and education, individuals with intellectual disability are rarely considered when it comes to cybersafety. To achieve inclusivity, an integrative review was conducted to make connections between disciplines of education and information technology and law. The process was split into three phases: (i) understanding the challenges those with intellectual disability face, both when using a social media interface and when evaluating safety risks; (ii) identifying gaps and understanding the implications for persons with intellectual disability from legislative and design and design principles; and (iii) visualisation of data flow to model interactions. In conclusion, an inclusive framework is proposed for practitioners when designing online social media platforms for people with intellectual disability.
本文旨在为从业者在为智障人士设计在线社交媒体平台时提供一个切实可行的设计框架。目前,立法和最佳实践都考虑到公众的网络安全和安全,特别关注儿童的保护。然而,尽管在医疗保健、经济援助和教育方面提供了支持,但在网络安全方面,智障人士很少被考虑在内。为了实现包容性,我们进行了一项综合审查,以建立教育、信息技术和法律学科之间的联系。这个过程分为三个阶段:(i)了解智障人士在使用社交媒体界面和评估安全风险时面临的挑战;(ii)从立法、设计和设计原则中找出差距,了解对智障人士的影响;(三)数据流的可视化以模拟交互。综上所述,在为智障人士设计在线社交媒体平台时,为从业者提供了一个包容性的框架。
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引用次数: 1
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Proceedings of the 23rd International ACM SIGACCESS Conference on Computers and Accessibility
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