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Finger flicking is a familiar finger movement, and we often flick a small object on the table with a finger in our daily life. We developed a flicking gesture recognition system called the dasiaOHAJIKI interfacepsila, which can track very rapid flicking movements using a high-speed camera, and estimate the flicking power and direction in real time. In this paper, we describe the recognition techniques...
To realize the potential of multi-touch tables, interaction designers need to create meaningful applications for them in real-world contexts. One convenient shortcut towards that end is adapting a meaningful application from another interface paradigm. In this paper, we detail the process of adapting DigiQuilt, a single-user desktop educational technology, to DigiTile, a collaborative multi-touch...
We propose a novel display technique that presents information with different visibility to multiple users. The system projects information on a screen through a revolving linear polarizer in front of the projector, and it shows information through another polarizer in front of the userpsilas viewpoint. The brightness of the observed information is reduced according to the relative angle of the polarization...
Negotiation and coordination of activities involving a number of people can be a difficult and time-consuming process, even when all participants are collocated. We propose the use of spatial proximity regions around mobile devices on a table to significantly reduce the effort of proposing and exploring content within a group of collocated people. In order to determine the location of devices on ordinary...
An advantage of physical interfaces over graphical widgets is that they bring controls closer to hand. VoodooSketch is a system that supports dynamic customisation of tabletop interfaces with physical controls that users can arrange on palettes. The system employs pen and paper techniques to achieve two novel capabilities: first, users are able to sketch controls that are immediately operational for...
In this paper we examine tilted tabletops as workspaces for computer-supported group collaboration. The configuration of a tilted tabletop is considered to be in between a fully horizontal tabletop and a vertical whiteboard. We describe related work, and provide an overview of the advantages and disadvantages of such a configuration. Furthermore, we present the results of a user study about tilted...
This paper introduces TurTan, a tangible programming language for creative exploration inspired by Logo, which uses a tabletop interface with tangible objects. The aim of this project is to design a toy language for programming entertainment and creative purposes. Along this paper we also discuss some interesting technical issues we have found during its implementation such as tangible linking and...
Multi-touch large display interfaces are becoming increasingly popular in public spaces. These spaces impose specific requirements on the accessibility of the user interfaces: most users are not familiar with the interface and expectations with regard to user experience are very high. Multi-touch interaction beyond the traditional move-rotate-scale interactions is often unknown to the public and can...
Most tabletop research presents findings from lab-based user studies, focusing on specific interaction techniques. This means we still know little about how these new interfaces perform in real life settings and how users appropriate them. This paper presents findings from a field study of an existing interactive table in a museum of natural history. Visitors were found to employ a wide variety of...
To better understand the potential for horizontal surfaces in day-to-day work, we conducted a field study. We collected and analyzed over a month of use data from eight participants who used horizontal displays in conjunction with their existing office computer setups. Our analysis of the system logs, observations, and interview data from the study reveals clear differences in preference and use patterns...
This paper presents selected results from an experimental study designed to compare fantasy play in a virtual and physical setting. Twenty-two children (aged 3 and 4) played in same-sex dyads with a real wooden tree house and its virtual implementation on a DiamondTouch tabletop. The study evinced several problems in the interaction with the tabletop as children often struggled to drag the objects...
In order to increase the ways that users can intuitively interact with a tabletop display, we developed UlteriorScape. This system integrates two major functions of its predecessors. As with Tablescape Plus, UlteriorScape uses tabletop objects as both projection screens and input interfaces. As with the Lumisight Table, the tabletop is physically single, but visually multiple with a view-dependent...
For human vision, the resolution of visual perception is not uniform across the entire eye, in which the fovea, a dimple on the central retina, provides our highest resolution vision. While many researchers have focused on building a large homogeneous high-resolution display for better visual quality, our approach goes a step further to exploit the variable-resolution nature of human vision on tabletop...
This paper discusses some general results from an in-situ study of the use of a tabletop system for card playing that differs in several ways from most tabletop systems: 1. It was designed primarily for use by senior citizens with little or no computer experience. 2. It is a single-user system, though social interaction with nearby persons during its use is typical. 3. It includes a simple conversational...
Knowledge workers often undertake tasks that involve a variety of information artifacts, including both paper and digital documents. In this paper, we first summarize findings from a study that illustrate some of the challenges of managing tasks that include both paper and digital content. We then introduce DocuDesk, a prototype interactive desk that demonstrates interaction techniques for establishing...
Most tabletop groupware systems provide a single shared display, and users must coordinate access to both resources and space. In many situations, it can be difficult to manage this shared space - for example, it can be difficult to deal with clutter, to partition the work area, to divide the task, and to work with multiple objects at a time. To address these limitations, we developed an interaction...
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