On the 14th December, Ioanna Tziouvara will defend her Master thesis: Integration of 3D tracking systems for Interaction in Spatial Augmented Reality. The defense is open for the public and guests are therefore invited to attend.
Date and time: 14 December 2012, 14:30
Location: van der Poelzaal (LB 01.220), Faculty of EEMCS, Mekelweg 4, Delft
Topic preview can be found at the project website.
Spatial Augmented Reality (SAR) has been a research field for more than a decade. SAR uses digital projectors to augment virtual information on physical objects, which makes it non-invasive and can yield an immersive experience. SAR has shown to have potential in a variety of fields, like entertainment, medicine and industrial applications. Although the opportunities that accompany SAR are great, effort towards the interaction mechanisms is necessary.
In this thesis, a SAR system designed and developed to be applied in the field of Industrial Design Engineering is presented. More specifically, this work contains an approach to set the hardware to support SAR, else known as hardware calibration for SAR. Each hardware entity is calibrated with respect to a common “world” in order to achieve effective communication. This world is set to coincide with the graphics world, and this allows us to imagine being inside the 3D graphics world while the virtual content is rendered onto the scene’s objects. In order to identify the basic ingredients that enable interaction in SAR, a scheme is introduced to help with the analysis of related work. Based on this background knowledge and the newly inserted scheme, we designed the interaction components of our SAR system according to characteristics of our setting. The SAR system was designed to work in the peripersonal region. The user inserts input via a constructed IR tracked pen and a dynamic menu is used as interface to the system. Functionality such as selection, feedback and annotation is enabled for interacting with the SAR system. The system’s application is divided into two parts. The first part includes the use of the RGB-D camera and the IR tracker for the construction of a 3D scanner to produce a virtual model of an object through sampling, segmentation, and registration of sequential point clouds. In the second part, the result of the scanning process, which is a polygonal mesh of the scanned object, is added to the SAR system’s application that enables interaction with virtual models and the ground level of the world. These two parts of the SAR system application aim to support industrial designers in the scanning of a freshly made physical prototype, and enable the design of features on the corresponding virtual model by using the SAR system.
In order to identify the strong points and weaknesses of the current state of the SAR system application, we carried out a user evaluation. 21 students from the Faculty of Industrial Design Engineering evaluated the two parts of the system’s application. The results show that the SAR system is useful and that it has great potential in the field of Industrial Design Engineering. Nevertheless, there is still space for improvement and future work, in order to be fully applied in the field.