Modifying Perceived Size of a Handled Object through Hand Image Deformation
Modifying Perceived Size of a Handled Object through Hand Image Deformation
复制标题
通过手部图像变形修改所处理物体的感知尺寸
DOI：
10.1162/pres_a_00154
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Tomohiro Tanikawa and Michitaka Hirose
中科院分区：
文献类型：
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作者：
Yuki Ban;Takuji Narumi;Tomohiro Tanikawa and Michitaka Hirose
在这项研究中，我们的目标是构建一个基于感知的形状显示系统，为用户提供仅使用简单机制即可触摸不同形状的虚拟对象的感觉。到目前为止，我们已经证明，可以通过替换用户手的视觉表示来修改识别的曲面形状或边角。然而，使用这种方法，我们不能模拟多指触摸，因为空间不一致。为了解决这个问题，我们专注于通过变形用户手的视觉表示来修改使用两个手指识别形状的方法。我们设计了一种视频透视系统，使我们能够改变用户在视觉上触摸的对象的感知形状。用户手的视觉表示被变形，就好像用户正在处理视觉对象一样；然而，用户实际上正在处理不同形状的对象。利用该系统，我们进行了两个实验，以考察视觉-触觉交互的效果并评估其有效性。一种是关于大小知觉修正的调查，以证实手指没有触摸形状，而是静态地触摸了它。另一种是对形状知觉修正的研究，以确定手指是否动态地触摸了形状的表面。这些实验的结果表明，如果物理刺激和视觉刺激的大小之间的差异在−40%到35%的范围内，那么使用拇指和其他手指(S)处理的对象的感知大小可以被修改。此外，我们还发现，当用户用多个手指触摸形状时，该算法可以产生形状感知修改的效果。
In this study, we aim to construct a perception-based shape display system to provide users with the sensation of touching virtual objects of varying shapes using only a simple mechanism. Thus far, we have proved that identified curved surface shapes or edge angles can be modified by displacing the visual representation of the user's hand. However, using this method, we cannot emulate multifinger touch, because of spatial unconformity. To solve this problem, we focus on modifying the identification of shapes using two fingers by deforming the visual representation of the user's hand. We devised a video see-through system that enables us to change the perceived shape of an object that a user is touching visually. The visual representation of the user's hand is deformed as if the user were handling a visual object; however, the user is actually handling an object of a different shape. Using this system, we conducted two experiments to investigate the effects of visuo-haptic interaction and evaluate its effectiveness. One is an investigation on the modification of size perception to confirm that the fingers did not stroke the shape but only touched it statically. The other is an investigation on the modification of shape perception for confirming that the fingers dynamically stroked the surface of the shape. The results of these experiments show that the perceived sizes of objects handled using a thumb and other finger(s) could be modified if the difference between the size of physical and visual stimuli was in the −40% to 35% range. In addition, we found that the algorithm can create an effect of shape perception modification when users stroke the shape with multiple fingers.