Patrick Lindemann

Learn More
— This paper gives an overview of the Gilbert-Johnson-Keerthi (GJK) algorithm, which provides an iterative method for computing the euclidian distance between two convex sets in m-dimensional space with linear time complexity. The algorithm is very versatile and several enhancements have been published since it was first introduced. Apart from some(More)
use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. For other copying of articles that carry a code at the(More)
Saving money is usually a tedious task that requires a high degree of self-control for many of us. Some people have one or more specific savings targets in mind and thus need to prioritize them. We propose connecting a savings box with a personal smartphone. Thus, people become motivated to keep track of their savings for multiple targets. Using a savings(More)
Mobile location recognition by capturing images of the environment (visual localization) is a promising technique for indoor navigation in arbitrary surroundings. However, it has barely been investigated so far how the user interface (UI) can cope with the challenges of the vision-based localization technique, such as varying quality of the query images. We(More)
People do not always think and behave rationally. Behavioral economics has produced theories to explain when and why people make such allegedly irrational decisions, for example if it comes to spending money. However, humans tend to use reference points to judge and decide. Nowadays, mobile devices can work as flexible tools to create reference points thus(More)
In this paper, we propose a floating, multi-layered, wide field-of-view user interface for car drivers. It utilizes stereoscopic depth and focus blurring to highlight items with high priority or urgency. Individual layers are additionally used to separate groups of UI elements according to importance or context. Our work is motivated by two main prospects:(More)
Gestural interaction has entered the automotive domain, allowing the driver to control secondary and tertiary functions of the vehicle. The design space ranges from mid-air gestures to surface-based gestures requiring little or no visual attention of the user. In this paper, we present an up-to-date survey on current gestural interaction methods in the(More)
—Sharing information between traffic participants can improve traffic flow and safety. Currently, communication is mainly done via vehicle lighting such as brake lamps or turn signals. For enhanced information exchange, we propose using the exterior of vehicles as pervasive displays to present information that may be relevant to other traffic participants.(More)