比较视障人士在物体定位上的表现和偏好:触觉、语言和声音提示模式

Shatha Abu Rass, Omer Cohen, Eliav Bareli, Sigal Portnoy
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引用次数: 0

摘要

音频引导是帮助视障人士导航的常用手段,从而增加他们的独立性。然而,在三维空间中定位物体的不同制导方式之间的差异还有待研究。本研究的目的是比较视障人士使用三种自动提示方式的时间、手的路径长度和满意度:音高、言语和振动。我们招募了30名视障人士(11名女性,平均年龄39.6±15.0),他们被要求在三种提示方式之一的引导下定位一个小立方体:声音(当手接近立方体时频率增加的连续哔哔声),语言提示(“右”,“向前”等)和振动(通过五个马达,连接在手上的不同位置)。这三种线索模式由计算机化的动作捕捉系统自动激活。受试者分别回答了每种提示方式的满意度问题。主要发现是使用声波提示找到立方体的时间更长(p = 0.016)。在手径长度和被试满意度上没有显著差异。可以得出结论,口头指导可能是最有效的指导视力障碍的人在三维空间中定位物体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparing Performance and Preference of Visually Impaired Individuals in Object Localization: Tactile, Verbal, and Sonification Cueing Modalities
Audio guidance is a common means of helping visually impaired individuals to navigate, thereby increasing their independence. However, the differences between different guidance modalities for locating objects in 3D space have yet to be investigated. The aim of this study was to compare the time, the hand’s path length, and the satisfaction levels of visually impaired individuals using three automatic cueing modalities: pitch sonification, verbal, and vibration. We recruited 30 visually impaired individuals (11 women, average age 39.6 ± 15.0), who were asked to locate a small cube, guided by one of three cueing modalities: sonification (a continuous beep that increases in frequency as the hand approaches the cube), verbal prompting (“right”, “forward”, etc.), and vibration (via five motors, attached to different locations on the hand). The three cueing modalities were automatically activated by computerized motion capture systems. The subjects separately answered satisfaction questions for each cueing modality. The main finding was that the time to find the cube was longer using the sonification cueing (p = 0.016). There were no significant differences in the hand path length or the subjects’ satisfaction. It can be concluded that verbal guidance may be the most effective for guiding people with visual impairment to locate an object in a 3D space.
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