Design review of CAD assemblies using bimanual natural interface
- PDF / 1,659,597 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 11 Downloads / 191 Views
ORIGINAL PAPER
Design review of CAD assemblies using bimanual natural interface Michele Fiorentino · Rafael Radkowski · Christian Stritzke · Antonio E. Uva · Giuseppe Monno
Received: 18 October 2012 / Accepted: 30 October 2012 © Springer-Verlag France 2012
Abstract The interaction metaphor, based on mouse, monitor and keyboard, presents evident limits in the engineering design review activities, when real and virtual models must be explored and compared, and also in “outside-theoffice” environments, where the desk is not available. The presented research aims to explore a new generation of gesture-based interfaces, called “natural interfaces”, which promise an intuitive control using free hands and without the desk support. We present a novel natural design review workspace which acquires user motion using a combination of video and depth cameras and visualizes the CAD models using monitor-based augmented reality. We implemented a bimanual egocentric pointer paradigm by a virtual active surface in front of the user. We used a XML configurable approach to explore bimanual gesture commands to browse, select, dis/assembly and explode 3D complex models imported in standard STEP format. Our experiments demonstrated that the virtual active surface is able to effectively trigger a set of CAD specific commands and to improve technical navigation in non-desktop environments: e.g. shop floor maintenance, on site quality control, etc. M. Fiorentino (B) · A. E. Uva · G. Monno Department of Mechanics, Mathematics and Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, Italy e-mail: [email protected] A. E. Uva e-mail: [email protected] G. Monno e-mail: [email protected] R. Radkowski · C. Stritzke Heinz Nixdorf Institute, University of Paderborn, Paderborn, Germany e-mail: [email protected] C. Stritzke e-mail: [email protected]
We evaluated the feasibility and robustness of the interface and reported a high degree of acceptance from the users who preferred the presented interface to a unconstrained 3D manipulation. Keywords Natural interfaces · Augmented reality · Human computer interfaces · CAD · Depth camera · 3D manipulation
1 Introduction Ubiquitous computing is becoming reality with the fast diffusion of smartphones, tablets, because of their increasing processing and 3D graphic power. A novel humancomputer interaction paradigm, caller post-desktop approach [1], is also strictly related to pervasive computing where the devices are not personal computers, but tiny, even invisible devices, embedded in almost any type of surrounding objects, including cars, tools, appliances, clothing, etc., all communicating through increasingly interconnected networks [2]. Nowadays, these mobile devices are candidate to replace desktop PCs in our daily life and, in a near future to play an important role also in industrial scenarios. The incorporation of ubiquitous devices, micro projectors, and embedded 3D scanners can lead to a revolutionary way to interact with 3D CAD models. Therefore, in t
Data Loading...
