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In ubiquitous computing era, the notion of context-awareness will play an important role. An application should be aware of its operating context for supporting and enriching human activities. Such contextual information is required to be extracted as seamlessly as possible through interaction between users and surrounding environments. This leads to the need for dealing with a wide variety of contextual...
We propose a unified ubiHome application service model which provides user-centered services by exploiting intelligent context-awareness. Recently, most of research related to smart home focused on the infrastructure rather than a user, and did not consider effective use of context. Such approaches are not appropriate for a user-centered interface, intelligent home control, flexible extension of application...
In this paper, we propose a way to retrieve and invoke ubiquitous objects within our living spaces by our behavior. Accumulations of GPS location information collected by a tiny program on a user’s cellular phone are organized into a structure which represents the user’s spatial behavior. This representation provides ubiquitous computing environment with assumptions about the user’s movement in one-day...
Forget processing power, memory, or the size of computers for a moment: Sensors, and the data they provide, are as important as any of these factors in realising ubiquitous and pervasive computing. Sensors have already become influential components in newer applications, but their data needs to be used more intelligently if we want to unlock their true potential. This requires improved ways to design...
How many “things” do we have in our house? More than eighty years ago, Wajiro Kon conducted a study to answer the question. In this paper, I introduced the works of Kon and his followers, including the ecological study of life commodities by CDI (Communication Design Institute) and the database of things in a Korean house from the exhibition of “Seoul Style 2002” by National Museum of Ethnology. ...
This paper describes a design, implementation and evaluations of a direction based service system named Azim, which utilizes both a position and a direction of a user. In this system, a user’s position is estimated by having the user point to and measure azimuths of several markers or objects whose positions are already known. Because the system does not require any other accurate position sensors...
This paper describes an architecture model designed to allow the development of web-based client-server applications where results should be dependent of the location of the client on a mobile (normally wireless) environment. It has been designed to work with the most popular technologies used nowadays which are available in every modern personal computer such as HTTP protocol client-server internetworking,...
In this paper, an indoor positioning system has been presented. The proposed system is set up by using infra-red transmitters. The developed system will be utilized as the museum guiding system for the next-generation at the National Science Museum of Japan in this summer. Plenty of research works have been performed for the development of positioning systems or mobile devices of the museum guiding...
In this paper, we identify navigation sub-tasks in a mobile map-application, and apply adaptive and gesture-based control methods having improved user experience as our goal. We investigate how automated positioning and rotating of maps and intuitive gesture control for zooming and scrolling facilitates navigation. Several smart features were implemented into a handheld prototype: Map is positioned...
With the integration of cameras, mobile phones have evolved into networked personal image capture devices. Camera phones can perform image processing tasks on the device itself and use the result as an additional means of user input and a source of context data. In this paper we present a system that turns such phones into mobile sensors for 2-dimensional visual codes. The proposed system induces...
This paper proposes an experience-sharing system that captures experience by using ubiquitous sensing environments and a humanoid communication robot. For experience sharing, a summarizing method is absolutely necessary because it is impossible to spend enough time to experience all other person’s experiences or past experiences vicariously. This system uses human-human or human-object interaction...
We developed AirTransNote, a computer-mediated classroom collaboration system. The system enables real-time note-sharing. AirTransNote manages notes written by students on paper and enables the teacher to browse through the notes or show them to the students. AirTransNote can analyze students’ answers, helping the teacher better understand their problems. The system is not meant to provide an alternative...
This paper describes our design and implementation of an augmented table system for face-to-face meetings. The system was designed to be used by multiple users in the ubiquitous environment, where people do not need to bring their laptop PCs. With effective use of the advantage of computer vision, we implemented the concept of ubiquitous desktop as personal workspace and virtual Chinese table as shared...
Today’s RFID protocols that govern the communication between RFID readers and tags are solely optimized for performance, but fail to address consumer privacy concerns by appropriately supporting the fair information practices. In this paper we propose a feature set that future privacy-aware RFID protocols should include in order to support the fair information principles at the lowest possible level...
This paper presents a study that has been performed in order to combine the strength of two emerging technologies: Smart Items and Enterprise Architectures. Smart Items are physical objects with sensing, computing and communication capabilities based on RFID techniques. Enterprise services are generic services that can be tailored to an industry’s or a company’s specific needs. Examples include accounting,...
In this paper, we present two methods for calibration of acceleration sensors that are inexpensive, in-situ, require minimum user interaction and are targeted to a broad set of acceleration sensor applications and devices. We overcome the necessity of orthogonal axes alignment by extending existing calibration methods with a non-orthogonal axes model. Our non-orthogonal method can furthermore be used...
Fiducial tags can be recognised successfully and decoded by computer vision systems in order to produce location information. We term a system dependable if its observable results are predictable and repeatable. The dependability of such a vision system is fundamentally dependent on the scheme used to encode data on the tag. We show that the rotational symmetry common to many tag designs requires...
The paper describes an agent-based web service coordination framework in ubiquitous computing. It is called context-mediated web service coordination. In the framework, all service processes in ubiquitous computing environments are wrapped in web services that have standard communication protocols. The framework coordinates sensor devices wrapped in web services, web services on the Internet, and...
Today, many organizations and individuals are creating a large variety of services. However, even if these services are connected through a network, there are very few examples where such services operate in an interconnected way. One reason for this is the lack of systems that are able to coordinate multiple systems, with different schemes for user management, in a safe way with adequate authorization...
In this paper, we propose universal interaction for networked home appliances, which provides a simple mechanism to fill the gap between traditional user interface systems and advanced user interaction devices. Our middleware enables us to control appliances in a uniform way at any places, and the system allows us to select suitable input and output interaction devices according to our preferences...
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