Utilizing sensor fusion in markerless mobile augmented reality

One of the key challenges of markerless Augmented Reality (AR) systems, where no a priori information of the environment is available, is map and scale initialization. In such systems, the scale is unknown as it is impossible to determine the scale from a sequence of images alone. Implementing scale is vital for ensuring that augmented objects are contextually sensitive to the environment they are projected upon. In this paper we demonstrate a sensor and vision fusion approach for robust and user-friendly initialization of map and scale. The map is initialized, using inbuilt accelerometers, whilst scale is initialized by the camera auto-focusing capability. The later is possible by applying the Depth From Focus (DFF) method, which was, till now, limited to high precision camera systems. The demonstrated illustrates benefits of such a system, which is running on a commercially available mobile phone Nokia N900

Local Convexity Properties of Quasihyperbolic Balls in Punctured Space

This paper deals with local convexity properties of the quasihyperbolic metric in the punctured space. We consider convexity and starlikeness of quasihyperbolic balls.Comment: Submitted to Journal of Mathematical Analysis and Application

Social network for collaboration and content sharing

Glavni cilj završnog rada bio je izrada samostalne web aplikacije za dijeljenje podataka i suradnju. Korisnicima je kroz korištenje aplikacije osiguran pristup i privatnost, te je samo korištenje aplikacije dosta intuitivno. U svijetu gdje sve vrvi od malicioznih programa i nesigurnosti tokom surfanja internetom, sigurnost je prilikom izrade bila na prvom mjestu. Teorijski dio rada ukratko opisuje glavne alate i tehnologije korištene pri izradi, te arhitekturalni koncept i smjer u kojem se razvoj aplikacije kretao. Praktični dio je posvećen prikazu načina implementacije prilikom razvoja, uz objašnjenja zašto i na koji način je izabran taj način implementacije u odnosu na druge. Unatoč tome što je aplikacija funkcionalna, za današnje standarde i korisnikove potrebe, koje rastu nekontroliranom brzinom, moglo bi se reći da je aplikacija tek u povojima.The main purpose of this paper was to develop self sustaining Internet application for sharing files between users, and to provide additional collaboration. Through using this application, users are guaranteed security and privacy, also, navigating and using this application is intuitive. In the world, where Internet dangers are lurking everywhere, from malicious programs to insecurity of suring through the Internet, implementing security was of the utmost importance. Theoretical part of this paper shortly describes main tools and technologies which were used while developing the application, it also describes architectural concept and general direction in which development of the application was going. Practical part is dedicated to displaying different ways of implementations through development, with clarifications why and in what way was that exact implementation used compared to others. In spite of application being fully functional, nowadays, standards and user needs are growing uncontrollably, it could be said that this application is in very early stages of its lifecycle

Local Convexity Properties of j-metric Balls

This paper deals with local convexity properties of the j-metric. We consider convexity and starlikeness of the j-metric balls in convex, starlike and general subdomains of R^n.Comment: To appear in Annales Academiae Scientiarum Fennicae Mathematic

Designing mobile augmented reality art applications:addressing the views of the galleries and the artists

The utilization of mobile augmented reality to display gallery artworks or museum content in novel ways is a well-established concept in the augmented reality research community. However, the focus of these systems is generally technologically driven or only addresses the end user and not the views of the gallery or the original artist. In this paper we discuss the design and development of the mobile application ?Taking the Artwork Home?, which allows people to digitally curate their own augmented reality art exhibitions in their own homes by digitally ?replacing? the pictures they have on their walls with content from the Peter Scott Gallery in Lancaster. In particular, we present the insights gained from a research through design methodology that allowed us to consider how the views of the gallery and artists impacted on the system design and therefore the user experience. Thus the final artifact is the result of an iterative evaluation process with over 100 users representing a broad range of demographics and continues to be evaluated/enhanced by observing its operation ?in the wild?. Further, we consider the effect the project has had on gallery practices to enable both augmented reality designers, and galleries and museums to maximize the potential application of the technology when working together on such project

Becoming Holistic Teachers and Learners: A Review of Teaching Qualitative Research: Strategies for Engaging Emerging Scholars

In this review I offer an alternative perspective on the book Teaching Qualitative Research: Strategies for Engaging Emerging Scholars by emphasizing how the authors propose a holistic approach to learning qualitative research. Departing from the point of view of an emerging scholar, this piece was written as I was transitioning from a doctoral program to the professional world, learning with the authors what it is to teach qualitative research methods while being socialized as a scholar in the doing of qualitative research

An approach to conceptualize learning enterprises in the manufacturing sector

Tese (doutorado) - Universidade Federal de Santa Catarina, Centro TecnologicoO trabalho realizado discute a necessidade de 'Learning Enterprises' para fazer frente às crescentes globalização e customização de produtos e processos assim como a urgente necessidade de uma conscientização ambiental por parte das indústrias de manufatura. É abordada a necessidade de uma revisão da filosofia de produção e das estruturas organizacionais e gerenciais adotadas atualmente pela maioria das empresas do setor de manufatura. Trabalho também inclui um estudo de três elementos que podem ser utilizados como catalisadores para a obtenção de 'Learning Enterprises': Áreas Virtuais de Produção, representando o elemento organizacional, Sistemas Distribuídos de Planejamento Fino, Monitoração e Controle da Produção, como o elemento tecnológico e a 'Human Networking' obtida pelo Gerenciamento da Comunicação Humana, como o elemento necessário para o gerenciamento de sistemas dinâmicos centrados no homem. O resultado do estudo realizado em cada uma das áreas identificadas acima é, então, integrado segundo um procedimento sistemático originando um modelo de referência genérico para a concepção de uma 'Learning Enterprise'. A abordagem apresentada enfoca empresas de manufatura fabricantes de pequenos lotes e de produtos 'one-of-a-kind'

User curated augmented reality art exhibitions

Creating mobile augmented reality applications to display gallery artworks or museum content is a well-established concept within the research community. However, the focus of these systems is generally technologically driven and primarily addresses the end user and not the views of the gallery or the original artist. In this paper we present the design and development of the mobile application ?Taking the Artwork Home?, which allows people to digitally curate augmented reality art exhibitions in their own homes. A research through design methodology was adopted so that we could more fully understand how the views of the gallery and artists impacted on the artifact design and therefore the user experience