benko_mm09bnt236

benko_mm09bnt236 - Beyond Flat Surface Computing:...

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Beyond Flat Surface Computing: Challenges of Depth-Aware and Curved Interfaces Hrvoje Benko Microsoft Research One Microsoft Way Redmond, WA, USA +1-425-707-2731 benko@microsoft.com ABSTRACT In the past decade, multi-touch-sensitive interactive surfaces have transitioned from pure research prototypes in the lab, to commercial products with wide-spread adoption. One of the longer term visions of this research follows the idea of ubiquitous computing, where everyday surfaces in our environment are made interactive. However, most of current interfaces remain firmly tied to the traditional flat rectangular displays of the today’s computers and while they benefit from the directness and the ease of use, they are often not much more than touch-enabled standard desktop interfaces. In this paper, we argue for explorations that transcend the traditional notion of the flat display, and envision interfaces that are curved, three-dimensional, or that cross the boundary between the digital and physical world. In particular, we present two research directions that explore this idea: (a) exploring the three- dimensional interaction space above the display and (b) enabling gestural and touch interactions on curved devices for novel interaction possibilities. To illustrate both of these, we draw examples from our own work and the work of others, and guide the reader through several case studies that highlight the challenges and benefits of such novel interfaces. The implications on media requirements and collaboration aspects are discussed in detail, and, whenever possible, we highlight promising directions of future research. We believe that the compelling application design for future non-flat user interfaces will greatly depend on exploiting the unique characteristics of the given form factor. Categories and Subject Descriptors H5.2. Information interfaces and presentation (e.g., HCI): User Interfaces – Input devices and strategies: Graphical user interfaces. General Terms Design, Human Factors. Keywords Interactive surfaces, surface computing, spherical displays, multi- touch interactions, depth-sensing cameras, curved interfaces, gestures. 1. INTRODUCTION Since the pioneering work by Wellner [33], where he imagined many surfaces in our environment becoming interactive and adaptive to the users and their context, research in the area of interactive surfaces has enjoyed stellar growth. Wellner’s work was followed by many technological innovations that demonstrated ways of sensing user’s touches on the surface: through camera-based tracking of diffuse infra-red illumination (e.g., [23]), frustrated total internal reflection [15], and through capacitive or electrostatic coupling (e.g., [28][11]). Furthermore, in the past five years, we have seen the emergence
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benko_mm09bnt236 - Beyond Flat Surface Computing:...

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