Accurate Wide-Range Scaling Manipulation of the Model with a 6-DOF Tracking Device

Abstract

In virtual reality applications, translation, orientation, and scaling are the three basic properties of 3D model manipulation. The 6-DOF tracking device can be used to directly manipulate the former two properties. However, the scaling property cannot be directly mapped with a hand-held tracking device because it is physically impossible. In this study, we first compare various schemes for mapping the translation and orientation of a handheld tracking device to the 3D model’s scaling property. Next, we propose a scaling manipulation framework that combines the advantages of different schemes. This enables accurate and natural wide-range scaling with the orthogonal combination design of the translation and orientation data of the tracking device. The efficiency and accuracy of the proposed framework were examined in a user study, which verified that it improved the scaling error of wide-range scaling by over 55% without a significant decrease in time performance. Finally, two scaling scenarios for the application of this framework were presented.