An Investigation of Leap Motion Based 3D Manipulation Techniques for Use in Egocentric Viewpoint

In this paper we investigate suitable 3D manipulation techniques for a new generation of depth trackers exploitable in ego-vision for an immersive virtual environment. After presenting the specific configuration and hardware used, the paper focuses on an investigation into the advantages and disadvantages of the various techniques in order to choose the one most suitable for the manipulation of an object in an immersive virtual environment. We have faced the problem of canonical manipulation which includes, besides the selection, the positioning and rotation. Two different approaches are described allowing respectively a direct or constrained manipulation of the virtual object. Our aim is to evaluate the perceived usability of the two proposed manipulation techniques in the specific configuration and for this reason qualitative data have been gathered using the System Usability Scale questionnaire. The results show a different level of difficulty perceived by the testers between the two canonical manipulation techniques and a general preference for techniques that prove to be less tiring.

在本文中，我们研究了适用于新一代深度追踪器的三维操作技术，这些追踪器可用于沉浸式虚拟环境中的自我视觉。在介绍了所使用的特定配置和硬件之后，本文重点研究了各种技术的优缺点，以便选择最适合在沉浸式虚拟环境中操作物体的技术。我们已经面临了规范操作的问题，除了选择之外，还包括定位和旋转。描述了两种不同的方法，分别允许对虚拟物体进行直接或受限的操作。我们的目的是评估在特定配置下两种提出的操作技术的感知可用性，因此使用系统可用性量表问卷收集了定性数据。结果显示，测试人员在两种规范操作技术之间感知到不同的难度水平，并且普遍倾向于那些被证明不那么累人的技术。