Browsing by Author "Weigel, Martin"

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    From Focus to Context and Back: Combining Mobile Projectors and Stationary Displays
    (2012-10-12T19:29:53Z) Weigel, Martin; Boring, Sebastian; Marquardt, Nicolai; Steimle, Jurgen; Greenberg, Saul; Tang, Anthony
    Focus plus context displays combine high-resolution detail and lower-resolution overview using displays of different pixel densities. Historically, they employed two fixed-size displays of different resolutions, one embedded within the other. In this paper, we explore focus plus context displays using one or more mobile projectors in combination with a stationary display. The portability of mobile projectors as applied to focus plus context displays contributes in three ways. First, the projector’s projection on the stationary display can transition dynamically from being the focus of one’s interest (i.e. providing a high resolution view when close to the display) to providing context around it (i.e. providing a low resolution view beyond the display’s borders when further away from it). Second, users can dynamically reposition and resize a focal area that matches their interest rather than repositioning all content into a fixed high-resolution area. Third, multiple users can manipulate multiple foci or context areas without interfering with one other. A proof-of-concept implementation illustrates these contributions.
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    ProjectorKit: Easing the Development of Interactive Applications for Mobile Projectors
    (2013-02-19) Weigel, Martin; Boring, Sebastian; Steimle, Jurgen; Marquardt, Nicolai; Greenberg, Saul; Tang, Anthony
    Researchers have developed interaction concepts based on mobile projectors. Yet pursuing work in this area – particularly in applying projector-based techniques within an application – is cumbersome and time-consuming. To mitigate this problem, we generalize existing interaction techniques using mobile projectors. First, we identified five interaction primitives that serve as building blocks for a large set of applications. Second, these primitives were used to derive a set of principles that inform the design of a toolkit that ease and support software development for mobile projectors. Finally, we implemented these principles in a toolkit, called ProjectorKit, which we contribute to the community as a flexible open-source platform.