Vasco Rodrigues (2015). Manipulações de Modelos 3D no Espaço em Ambientes Virtuais (Semi-)Imersivos. MSc thesis, Técnico Lisboa, University of Lisbon.
Abstract: With the technological advances in recent years, there has been a growth of 3D objects’ manipulation techniques. The most notable examples are the mid-air interaction techniques, that allow users to manipulate objects in their surrounding space.
These techniques can differ in the freedom of manipulation they provide, the use of intrusive devices and the use of stereoscopy. They can also be used in different environments, such as immersive and semi-immersive virtual environments.
Recent studies concluded which techniques were the best in semi-immersive environments, regarding the time to complete a task. However these techniques can have a different performance when used in a different environment. This work had the objective of comparing techniques in both immersive/semiimersive environments, to ultimately conclude which is the best regarding the time to complete a task, as well as the achieved precision.
With this work it was possible to observe that mid-air interactions in immersive systems are the most efficient and satisfying method for users. That is due to the direct manipulation of 6 degrees of freedom, which mimics the way with which we interact with physical objects.
Keywords: Manipulation, 3D Objects, Precision, Mid-Air