Benefits & drawbacks of different means of interaction for placing objects above a video footage

Public Display Systems (PDS) increasingly have a greater presence in our cities. These systems provide information and advertising specifically tailored to audiences in spaces such as airports, train stations, and shopping centers. A large number of public displays are also being deployed for entertainment reasons. Sometimes designing and prototyping PDS come to be a laborious, complex and a costly task. This dissertation focuses on the design and evaluation of PDS at early development phases with the aim of facilitating low-effort, rapid design and the evaluation of interactive PDS. This study focuses on the IPED Toolkit. This tool proposes the design, prototype, and evaluation of public display systems, replicating real-world scenes in the lab. This research aims at identifying benefits and drawbacks on the use of different means to place overlays/virtual displays above a panoramic video footage, recorded at real-world locations. The means of interaction studied in this work are on the one hand the keyboard and mouse, and on the other hand the tablet with two different techniques of use. To carry out this study, an android application has been developed whose function is to allow users to interact with the IPED Toolkit using the tablet. Additionally, the toolkit has been modified and adapted to tablets by using different web technologies. Finally the users study makes a comparison about the different means of interaction

Designing 3D input devices for immersive environments

In this paper we describe the end user driven development process of input devices for magnetic tracking in virtual immersive environments. Based on pre-tests with expert users we defined criteria for testing and found out about the preferences for handles of input devices. For this trial period we designed a new set of functional prototypes for magnetic tracking. Having taken the views of expert users into consideration, a controlled experiment was then conducted with novice users to compare the usability of an existing and a new device. Based on the results of this experiment we defined criteria to design input devices for immersive systems. A second controlled experiment was carried out to evaluate the revised device regarding its general design and the proposed design criteria. In this paper we will give a detailed presentation of the results of this experiment. From the results of this experiment we conclude that most of the applied design criteria have led to an i mproved input device