Influence of control/display ratio on the perception of mass of manipulated objects in virtual environments
Influence of control/display ratio on the perception of mass of manipulated objects in virtual environments
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DOI：
10.1109/vr.2005.1492749
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
L. Dominjon;A. Lécuyer;Jean-Marie Burkhardt;P. Richard;S. Richir
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文献类型：
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作者：
L. Dominjon;A. Lécuyer;Jean-Marie Burkhardt;P. Richard;S. Richir
本文介绍了两个心理物理实验，以评估对照/显示（C/D）比率对虚拟环境（VE）中受操纵物体的质量感知的影响。在这两个实验中，都使用了一项歧视任务，其中要求参与者识别两个虚拟球之间的较重对象。参与者可以通过触觉界面称量每个球，并在计算机屏幕上查看其合成显示。参与者未知，每个试验之间有两个参数不同：在称重比较球时，球之间的质量差与视觉显示中使用的C/D比。收集的数据表明，C/D比显着影响了大规模歧视任务的结果，有时甚至会逆转。缺乏重力力在很大程度上增加了这种影响。这些结果表明，与用户手的实际运动相比，操纵虚拟对象的视觉运动会被放大（即，如果使用的C/D比小于1），则用户倾向于感觉到该质量的质量对象减小。因此，减少或放大用户在VE中的动作可以强烈改变他/她操纵对象的触觉特性的感知。虚拟环境的设计人员可以使用这些结果进行简化注意事项，并避免潜在的感知畸变。
This paper describes two psychophysical experiments which were conducted to evaluate the influence of the control/display (C/D) ratio on the perception of mass of manipulated objects in virtual environments (VE). In both experiments, a discrimination task was used in which participants were asked to identify the heavier object between two virtual balls. Participants could weigh each ball via a haptic interface and look at its synthetic display on a computer screen. Unknown to the participants, two parameters varied between each trial: the difference of mass between the balls and the C/D ratio used in the visual display when weighing the comparison ball. The data collected demonstrated that the C/D ratio significantly influenced the result of the mass discrimination task and sometimes even reversed it. The absence of gravity force largely increased this effect. These results suggest that if the visual motion of a manipulated virtual object is amplified when compared to the actual motion of the user's hand (i.e. if the C/D ratio used is smaller than 1), the user tends to feel that the mass of the object decreases. Thus, decreasing or amplifying the motions of the user in a VE can strongly modify the perception of haptic properties of objects that he/she manipulates. Designers of virtual environments could use these results for simplification considerations and also to avoid potential perceptual aberrations.