This thesis deals with the detection of Uniform Marker Fields and the position of a camera in a space. The steps of the UMF detection, the Windows Phone 8 platform, DirectX working and the concept of augmented reality are described in the thesis. Implementation and design of the demo application together with the whole architecture of the project is described in the thesis. The result of the thesis is an application using the UMF detector and plotting a 3D object into a scene. Finally the application is tested and evaluated.

The aim of the thesis was to ensure simple and clear operation while providing users the ability to monitor and analyze the current historical data from sensors in the smart home. Beyond the task I have extended the work on the Windows Phone platform. Designed user interface based on the requirements for intelligent home control in the project IoT (Internet of Things), which are written in this work. Tests were conducted using the available auto-mated testing and continuous testing at alpha and beta. Finally, the quality of the interface and user friendliness assessed using questionnaires.

I denna studie kommer vi att undersöka det populära ramverket Xamarin. Xamarin är ett cross-platform ramverk som använder programmeringsspråket C# för att utveckla samma applikation för iOS, Android och Windows Phone. Studiens huvudsyfte är att genomföra en inledande explorativ studie där vi försöker att identifiera ett antal särskiljande aspekter mellan native- och Xamarin utveckling och dess slutprodukter.För att göra denna jämförelse har vi utvecklat tre applikationer: en native android applikation, en Windows Phone applikation i Xamarin, och en Android app-likation i Xamarin. Med hjälp av en litteraturstudie och utvecklingen av de ovan-nämnda applikationerna har de särskiljande aspekter observerats och identifieras.Resultatet av vår studie visar att native Android applikationen tar upp mindre plats i telefonen jämfört med Xamarin Android applikationen, medan Xamarin Win-dows Phone applikationen tar 1/6 mindre utrymme i telefonen jämfört med Xamarin Android applikationen. Ytterligare tester visar också att Xamarin Android appli-kationen tar längre tid att starta jämfört med native Android och Xamarin Winows Phone applikationen. / In this study, we will examine the popular framework Xamarin. Xamarin is a cross-platform framework that uses the C# programming language to develop the same application for iOS, Android and Windows Phone. The study's main purpose is to conduct an initial exploratory study in which we try to identify a number of distin-guishing aspects between native- and Xamarin development and its products. In order to make this comparison we developed three applications: one native android application, one Windows Phone application in Xamarin, and one Android application in Xamarin. With the help of a literature study and the development of the aforementioned applications, the distinctive aspects have been observed and identified.The result of our study shows that the native android application takes up less space in the phone compared to the Xamarin android application, whereas the Xamarin Windows Phone app takes 1/6 less space in the phone compared to the Xamarin android application. Further tests also show that the Xamarin android ap¬p-lication takes longer time to start-up than with the native Android and Xamarin Winows Phone applications.

The subject of this thesis is to compare the most widely used mobile operating systems from the perspective of the development, distribution and monetization of applications developed for these systems. Compared systems are Android, iOS, Symbian OS, Windows Phone and BlackBerry OS. The thesis defines a total of 16 criteria against which systems are compared. These criteria are further divided into three categories, namely SDK features, functionality and distribution and monetization. All criteria have assigned weights which are determined by the paired comparison method using the Fuller's triangle, which is part of the Annexes of this work. Practical part of this thesis is focused on determining the values of defined criteria. Each criterion is evaluated separately, including an analysis of results. The overall evaluation is performed in a separate part of the thesis and is composed by categories evaluation and overall evaluation.

Η παρούσα εργασία ασχολείται με τη μελέτη των τεχνολογιών ανάπτυξης εφαρμογών σε περιβάλλον φορητών συσκευών και συγκεκριμένα σε Windows Phone 7.5 (ή Mango) συσκευές. Ιδιαίτερα δόθηκε έμφαση στη δημιουργία πολυμεσικών εφαρμογών πολιτισμικού περιεχομένου, οι οποίες θα είναι όχι μόνο λειτουργικές αλλά θα διαθέτουν επίσης ένα φιλικό περιβάλλον διεπαφής έτσι ώστε να αποτελούν μια ευχάριστη εμπειρία για τον τελικό χρήστη. Με αφορμή αυτό το ερέθισμα, σχεδιάσαμε και αναπτύξαμε το Museum Guide – ένα ολοκληρωμένο περιβάλλον διαχείρισης περιεχομένου που έχει σαν στόχο την ξενάγηση σε ένα χώρο πολιτισμού, όπως για παράδειγμα ένα μουσείο, εκμεταλλευόμενο τις πολλές δυνατότητες που προσφέρει μια Windows Phone 7.5 συσκευή. Έτσι χρησιμοποιώντας το Museum Guide ο επισκέπτης του μουσείου μπορεί να βλέπει τα εκθέματα καθώς και συνοδευτικό υλικό που περιλαμβάνει κείμενο, εικόνες, αρχεία ήχου και βίντεο. Επιπλέον μπορεί να επιλέγει κάποια από αυτά τα εκθέματα ως αγαπημένα και να μοιράζεται τις εμπειρίες του με τα υπόλοιπα μέλη της ομάδας του μέσω άμεσων μηνυμάτων. Για τη λειτουργία των άμεσων μηνυμάτων δημιουργήσαμε έναν ενσωματωμένο messenger που λειτουργεί πάνω από xmpp πρωτόκολλο με τη βοήθεια της βιβλιοθήκης Matrix. Εκτός από τα παραπάνω, το Museum Guide δίνει τη δυνατότητα στον χρήστη να λάβει πληροφορίες για ένα συγκεκριμένο έκθεμα, βγάζοντας απλά μια φωτογραφία τού εν λόγω εκθέματος με την κάμερα του κινητού. Την λειτουργία αυτή την ονομάζουμε on-demand ξενάγηση και δόθηκε ιδιαίτερη έμφαση στον αλγόριθμο με βάση τον οποίο γίνεται η αναγνώριση της φωτογραφίας που βγάζει ο χρήστης. Για το σκοπό αυτό μελετήσαμε και αξιολογήσαμε διάφορους αλγορίθμους αναγνώρισης εικόνας και καταλήξαμε στη χρήση hashing τεχνικών με τη βοήθεια της βιβλιοθήκης pHash. / The current thesis is on study of application development technologies in portable devices environment and namely in Windows Phone 7.5 (or Mango) devices. Especially emphasis was placed on creation of multimedia applications with cultural content which will not only be functional but also have a friendly interface in order to be a pleasant experience for the end user. In response to this stimulus, we designed and developed the Museum Guide – an integrated content management environment which aims at guidance in an area of culture, for example a museum, exploiting the capabilities of a Windows Phone 7.5 device. Thereby the visitor of the museum can use the Museum Guide to see the exhibits as well as accompanying material including text, photos, audios and videos. Additionally the visitor can mark any of these exhibits as favorites and share their experiences with the other members of their group through instant messages. For the operation of instant messaging, we have created an embedded messenger which works over the xmpp protocol using the Matrix library. Besides the above, the Museum Guide gives to the user the opportunity to receive information about a specific exhibit, just taking a photo of this exhibit with phone’s camera. We call this operation on-demand guidance and we emphasized especially on the algorithm of user’s photo recognition. For this purpose we studied and evaluated various image recognition algorithms and came to the conclusion to use hashing techniques with help of pHash library.

This thesis is focused on issues with development of mobile applications. At first it shows comparison of market shares by mobile platforms. Next there are presented individually technologies together with their possible development environment. Then there are trends in mobile applications with their progressions and possible ways to get data for application. Practical part is focused on choice of way of development of mobile Application. After there is draft, implementation and creating application including build and import to device.

Storing warranty receipts can sometimes be problematic. Receiptscan be lost, bleached and become illegible or in an extreme case, the storage area is destroyed. The company Freck AB offers a service to store these receiptsonline. They also provides a webpage where the user is able to handle their receipts and an iPhone client for easier uploading. Since the smartphones are increasing in market share each year, with different operating systems, it causes a market fragmentation. If Freck AB wants to address more potential customers, the application needs to get ported to more platforms. Currently iOS holds a 15.7% of the market share, and if the application is ported to the AndroidOS platform, 38.4% of the smartphone users will be addressed. This thesis will present a portation of an iOS application to the Android OS platform. It will also discuss basic Android programming together with the Android SDK classes and techniques used. The portation was considered successful and the subgoals were met. The application has been tested on multiple emulators and on one physical device with good results.

This work deals with the development of cross-platform mobile applications and compares cross-platform development frameworks. First the mobile devices market is defined and its dominant platforms are described. The main objective is to compare the frameworks with defined criteria. The theoretical part analyzes the mobile market and defines the different types of mobile devices. Further, describes the various mobile platforms, including its architecture and de-velopment environment. Subsequently, the approaches to cross-platform development are described with their individual frameworks. In the practical part the selected frameworks are compared to defined criteria and subse-quently evaluated.

The main objective of this thesis is to introduce the Windows Azure platform, its possibilities and limits, particularly with regard to interaction with mobile clients running on the Windows Phone 7 platform. This is demonstrated by the development of an application designed to ease navigation through difficult terrain. This application is primarily designed to help cyclists and people with handicap restricting their movement. The knowledge acquired through design and implementation of this application is generalized to be useful for other developers using Windows Azure. The application is developed with focus on the usefulness for the defined target groups. This thesis is focused on the server side of the application running on the Windows Azure platform. The client side of the application running on the Windows Phone 7 platform is not covered in this thesis and is described in detail by Bc. Vít Čurda in his thesis Development of map application for tracking in cloud - Client side on Windows Phone 7.

This thesis is focused on the technology of mobile devices. In the first part I analyse the technical parameters of the mobile device in detail, I mention each parameter and its importance, pitfalls and benefits. The second part is focused on mobile operating systems, especially iOS, Android and Windows Phone. The operating systems are analysed from the perspective of technological complexity, which builds on the analysis of the technology of mobile devices. The third part consists of future prediction. I describe hypothetical future development for both of previous parts of my survey. Approximate future development is mentioned in each chapter of of both first and second parts. The main benefit(contribution) of this work is the compact view on the issue of the technology of mobile devices. It helps reader to make a complex overview of the evolution and possibilities on the current mobile devices market.