Developing Multimodal Adaptation Algorithm for Mobility Impaired Users by Evaluating Their Hand Strength
Developing Multimodal Adaptation Algorithm for Mobility Impaired Users by Evaluating Their Hand Strength
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DOI：
10.1080/10447318.2011.636294
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发表时间：
2012-01-01
影响因子：
4.7
通讯作者：
Langdon, Patrick
中科院分区：
文献类型：
--
作者：
Biswas, Pradipta;Langdon, Patrick
最近对计算机、数字电视、智能手机等互动电子系统的研究可以帮助许多残疾人和老年人更充分地参与世界，从而提高他们的生活质量。以前，开发了一个模拟器，反映了损害对电子设备交互的影响，从而帮助设计师开发无障碍系统。在本文中，模拟器的范围已扩展到多个指向设备。在四种不同的输入方式下，研究了手部力量对有和无行动障碍的人在图形用户界面上的指向表现的影响，并建立了一套线性方程来预测不同设备的指向时间和平均子动作次数。这些模型用于开发一种自适应算法，以方便运动障碍用户使用不同的指向设备在电子界面中进行指向。该算法在指针靠近目标时吸引指针，从而有助于减少在归巢和点击过程中的随机移动。利用模拟器对该算法进行了优化，然后在实际应用中对涉及三种不同指向设备的多个干扰进行了测试。该算法显著缩短了不同输入模态的指向时间。
Recent research on interactive electronic systems like computer, digital TV, smartphones can improve the quality of life of many disabled and elderly people by helping them to engage more fully to the world. Previously, a simulator was developed that reflects the effect of impairment on interaction with electronic devices and thus helps designers in developing accessible systems. In this article, the scope of the simulator has been extended to multiple pointing devices. The way that hand strength affects pointing performance of people with and without mobility impairment in graphical user interfaces was investigated for four different input modalities, and a set of linear equations to predict pointing time and average number of submovements for different devices was developed. These models were used to develop an adaptation algorithm to facilitate pointing in electronic interfaces by users with motor impairment using different pointing devices. The algorithm attracts a pointer when it is near a target and thus helps to reduce random movement during homing and clicking. The algorithm was optimized using the simulator and then tested on a real-life application with multiple distractors involving three different pointing devices. The algorithm significantly reduces pointing time for different input modalities.