Finger-based touch input has become a major interaction modality for mobile user interfaces. However, due to the low precision of finger input, small user interface components are often difficult to acquire and operate on a mobile device. It is even harder when the user is on the go and unable to pay close attention to the interface. In this paper, we present Gesture Avatar, a novel interaction technique that allows users to operate existing arbitrary user interfaces using gestures. It leverages the visibility of graphical user interfaces and the casual interaction of gestures. Gesture Avatar
Multi-Touch technology provides a successful gesture based Human Computer Interface. The contact and gesture recognition algorithms of this interface are based on full hand function and, therefore, are not accessible to many people with physical disability. In this paper, we design a set of command-like gestures for users with limited range and function in their digits and wrist. Trajectory and angle features are extracted from these gestures and passed to a recurrent neural network for recognition. Experiments are performed to test the feasibility of gesture recognition system and determine
This paper explores the interactive possibilities enabled when the barrel of a digital pen is augmented with a multi-touch sensor. We present a novel multi-touch pen (MTPen) prototype and discuss its alternate uses beyond those of a standard stylus, such as allowing new touch gestures to be performed using the index finger or thumb and detecting how users grip the device as a mechanism for mode switch-ing. We also discuss the hardware and software implemen-tation challenges in realizing our prototype, and showcase how one can combine different grips (tripod, relaxed tripod, sketch, wrap) and
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TEAM MEMBERS:
Jim SpadacciniHyunyoung SongHrvoje BenkoFrancois GuimbretiereShahram IzadiXiang CaoKen Hinckley
In this paper we describe two projects that utilize reality-based interaction to advance collaborative scientific inquiry and discovery. We discuss the relation between reality-based and embodied interaction, and present findings from an experimental study that illustrate benefits of reality-based tabletop interaction for collaborative inquiry-based learning.
New mobile devices with large multi-touch displays, such as the iPad, have brought revolutionary changes to ways users interact with computers. Instead of traditional input devices such as keyboards, touchpads and mice, multi-touch gestures are used as the primary means of interacting with mobile devices. Surprisingly, body-motion gestures are evolving to become a new, natural, and effective way for game players to interact with game consoles in a very similar fashion: in Kinect for Xbox 360, a controller-free gaming experience is made possible by using body-motion gestures to play games.
Direct-touch interaction on mobile phones revolves around screens that compete for visual attention with users‟ real-world tasks and activities. This paper investigates the impact of these situational impairments on touch-screen interaction. We probe several design factors for touch-screen gestures, under various levels of environmental demands on attention, in comparison to the status-quo approach of soft buttons. We find that in the presence of environmental distractions, ges-tures can offer significant performance gains and reduced attentional load, while performing as well as soft buttons
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TEAM MEMBERS:
Andrew BragdonEugene NelsonYang LiKen Hinckley
Zooming user interfaces are increasingly popular on mobile devices with touch screens. Swiping and pinching finger gestures anywhere on the screen manipulate the displayed portion of a page, and taps open objects within the page. This makes navigation easy but limits other manipulations of objects that would be supported naturally by the same gestures, notably cut and paste, multiple selection, and drag and drop. A popular device that suffers from this limitation is Apple’s iPhone. In this paper, we present Bezel Swipe, an interaction technique that supports multiple selection, cut, copy
In recent years, a large amount of software for multitouch interfaces with various degrees of similarity has been written. In order to improve interoperability, we aim to identify the common traits of these systems and present a layered software architecture which abstracts these similarities by defining common interfaces between successive layers. This provides developers with a unified view of the various types of multitouch hardware. Moreover, the layered architecture allows easy integration of existing software, as several alternative implementations for each layer can co-exist. Finally
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TEAM MEMBERS:
Florian EchtlerGudrun KlinkerJim Spadaccini
Recent advances in touch screen technology have increased the prevalence of touch screens and have prompted a wave of new touch screen-based devices. However, touch screens are still largely inaccessible to blind users, who must adopt error-prone compensatory strategies to use them or find accessible alternatives. This inaccessibility is due to interaction techniques that require the user to visually locate objects on the screen. To address this problem, we introduce Slide Rule, a set of audiobased multi-touch interaction techniques that enable blind users to access touch screen applications
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TEAM MEMBERS:
Jim SpadacciniJeffrey BighamJacob Wobbrock
Most current multi-touch capable interactive user interfaces for tabletop are built from custom toolkits that are decoupled from, and on top of, the “Desktop” provided by the underlying Operating System. However, this approach requires that each individual touch system build their own suite of touch capable custom applications (such as photo browsers), usually resulting in limited functionality. In this paper, we propose a software architecture for supporting and integrating multi-touch capability on existing desktop systems, where multi-touch and multiple single pointer input can be used
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TEAM MEMBERS:
Kelvin ChengBenjamin ItzsteinPaul SztajerMarkus Rittenbruch
Despite the considerable quantity of research directed towards multitouch technologies, a set of standardized UI components have not been developed. Menu systems provide a particular challenge, as traditional GUI menus require a level of pointing precision inappropriate for direct finger input. Marking menus are a promising alternative, but have yet to be investigated or adapted for use within multitouch systems. In this paper, we first investigate the human capabilities for performing directional chording gestures, to assess the feasibility of multitouch marking menus. Based on the positive
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TEAM MEMBERS:
Julian LepinskiTovi GrossmanGeorge Fitzmaurice
Watching a long unedited video is usually a boring experience. In this paper we examine a particular subset of videos, tour videos, in which the video is captured by walking about with a running camera with the goal of conveying the essence of some place. We present a system that makes the process of sharing and watching a long tour video easier, less boring, and more informative.
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TEAM MEMBERS:
Michael CohenJue WangSuporn Pongnumkul