Dissertations / Theses on the topic 'Google glasses'

In recent years wearable devices have been advancing at a rapid pace and one of the largest growing segments is the smart glass segment. In this thesis the feasibility of today’s ARM-based smart glasses are evaluated for automatic license plate recognition (ALPR). The license plate is by far the most prominent visual feature to identify a spe- cific vehicle, and exists on both old and newly produced vehicles. This thesis propose an ALPR system based on a sequence of vertical edge detection, a cascade classifier, verti- cal and horizontal projection as well as a general purpose optical character recognition library. The study further concludes that the optimal input resolution for license plate detection using vertical edges is 640x360 pixels and that the license plate need to be at least 20 pixels high or the characters 15 pixels high in order to successfully segment the plate and recognize each character. The separate stages were successfully implemented into a complete ALPR system that achieved 79.5% success rate while processing roughly 3 frames per second when running on a pair of Google Glass.
Under de senaste åren har området wearables avancerat i snabb takt, och ett av de snabbast växande segmenten är smarta glaögon. I denna examensuppsats utvärderas lämpligheten av dagens ARM-baserade smarta glasögon med avseende på automatisk registreringsskyltigenkänning. Registreringsskylten är den i särklass mest framträdande visuella egenskapen som kan användas för att identifiera ett specifikt fordon, och den finns på både gamla och nyproducerade fordon. Detta examensarbete föreslår ett system för automatisk registreringsskyltigenkänning baserat på en följd av vertikal kantdetektering, en kaskad av boostade klassificerare, vertikal och horisontell projektion samt ett optiskt teckenigenkänningsbibliotek. Studien konstaterar vidare att den optimala upplösningen för registreringsskyltdetektion med hjälp av vertikala kanter på smarta glasögonär 640x360 pixlar och att registreringsskylten måste vara minst 20 pixlar hög eller tecknen 15 pixlar höga för att registreringsskylten framgångsrikt skall kunna segmenteras samt tecken identifieras. De separata stegen implementerades framgångsrikt till ett system för automatisk registreringsskyltigenkänning på ett par Google Glass och lyckades känna igen 79,5% av de testade registreringsskyltarna, med en hastighet av ungefär 3 bilder per sekund.

Dois dispositivos de comunicação sem fio populares são considerados nesta pesquisa. Em primeiro lugar, o fone de ouvido que utiliza tecnologia Bluetooth, sendo um dos acessórios móveis mais econômicos do mercado e os óculos para dispositivos de comunicação que são uma representação da nova visão futurista. A absorção de ondas eletromagnéticas na cabeça humana durante um certo período de tempo, pode conduzir a problemas de saúde. A Taxa de Absorção Específica (SAR) foi simulada em quatro modelos diferentes para duas abordagens que realizam variações nos parâmetros dielétricos dos tecidos da cabeça. Estes resultados foram comparados com as recomendações internacionais (IEC 62209-2, 2010; ICNIRP, 2009; IEEE C95.1,2005; WHO, 2006; IEEE, 2002). O primeiro modelo utilizado foi o Manequim Antropomórfico Específico (SAM phantom), bem como três modelos realistas de cabeça humana (ou seja, um adulto de 34 anos e duas crianças de 10 e 6 anos). As simulações foram executadas utilizando o método de diferenças finitas (FDTD) e a frequência usada para alimentar as antenas foi de 2,45 GHz. Além disso foram feitas medidas experimentais de potência transmitida pelo dispositivo Bluetooth.
Two popular wireless communication devices are considered in this research. Firstly, the handset Bluetooth which is one of the most economic mobile accessories and the eyewear Communicating Device which are a representation of the new futuristic vision. It is well known that the absorption of electromagnetic waves on the human head for a certain period of time may lead to health problems such as headaches. The Specific Absorption Rate (SAR) is simulated to four different head models for two approaches that perform variations in the dielectric parameters in the head tissues and compared with the available international recommendations (IEC 62209-2, 2010; ICNIRP, 2009; IEEE C95.1,2005; WHO, 2006; IEEE, 2002). The first model used is the Specific Anthropomorphic Mannequin (SAM phantom), as well as three realistic models of human head (i.e., a 34 years old adult and two children of 10 and 6 years old). The simulations were performed using the finite difference time domain (FDTD) method and the frequency used to feed the antennas was 2.45 GHz. Experimental measurements of transmission power in Bluetooth device are also described.

Scopo primario della tesi è studiare e progettare un sistema informatico che proponga un buon livello di innovazione tecnologica in relazione al contesto applicativo di riferimento, ovvero relativamente al supporto al lavoro cooperativo di operatori in scenari d'emergenza. In particolare, la tesi si concentra sul'ecosistema software che ruota attorno al singolo operatore con l'obiettivo di dotarlo di uno strumento informatico che gli consenta di avvalersi di un efficace ed efficiente supporto per l'esecuzione delle proprie azioni sul campo (in generale, per la prima assistenza ai pazienti, triage e monitoraggio di parametri vitali). A tal proposito, l'ambito tecnologico di riferimento è quello del Pervasive Mobile Computing, con specifico riferimento ai sistemi context-aware e a quelli con comportamenti fortemente autonomi. Inoltre, al fine di dotare l'operatore di un supporto per l'interazione con il sistema stesso in modalità hands-free, sono stati analizzati i dispositivi wearable di tipo "see-through"; in particolare, i recenti glasses per realtà aumentata. La progettazione del sistema e il conseguente sviluppo del prototipo (che implementa le caratteristiche più significative ed innovative), è stata guidata da un'ispirazione basata sul modello ad agenti (integrato a quello ad oggetti), rivisitando opportunamente l'utilizzo dei componenti offerti dalla tecnologia Android, al fine di ottenere un prodotto software robusto e modulare facilmente manutenibile ed estendibile. Infine, per garantire a ciascun operatore rapida fruibilità del sistema sono state sfruttate le potenzialità offerte dall'uso di smartcard NFC ed inoltre è stato progettato un protocollo di comunicazione ad hoc, basato su stack Bluetooth, per l'integrazione degli AR-Glasses all'intero sistema.

The recent invention of Google Glass has prompted me to contemplate how future technologies will affect the way we interact with one another. In this paper, I argue that Google Glass technology is the first sort of technology that will facilitate us to violate our genuine interactions with one another in a face-to-face setting. Once we diminish these types of interactions, we fail to respect one another on a fundamental level and as a result, we fail to genuinely pursue one of the most important classes of meaningful projects in our lives: developing and maintaining relationships.

The Mobile Life (TML) is a company with great passion for mobile devices that has set its primary focus on developing tailor-made mobile applications. Some of their bigger clients consist of airlines where TML designs, develops and delivers applications, in which travelers who travel with the airline can use to browse through, reserve and book flights. Wearable Technology is being more and more embraced as the future big addition to the ecosystem of mobile devices and exploring what some of the more prominent wearables have to offer is very much in the interest of aspiring companies like TML. To understand more in-depth what it means to develop applications for devices that might suffer from vast limitations in regards to interaction and feedback, we would first investigate what coming wearables could be recognized as prominent. The wearables that we concluded as suitable to investigate closer were Google Glass, Android Wear and various smartwatches. Out of these, Google Glass was the device chosen to act as our platform when exploring the potential of a wearable. A suitable way of understanding the possibilities and limitations of user interaction for Google Glass was to develop our own flight booking application for Glass. The realization we got was that there are various aspects of Glass that limits the kind of applications that can be made for it. The two primary things are the limits of the hardware and the fact that user interaction has taken a step back. From the graphical directmanipulation interaction that we nowadays are so used to in smartphones, to a simple menu system with limitations to how much the user can interact and how much feedback the program can show the user.
The Mobile Life (TML) är ett företag med stort engagemang inom mobil utveckling med fokus på att leverera skräddarsydda mobila lösningar. Vissa av deras större kunder inkluderar flygbolag som TML designar, utvecklar och levererar applikationer för resenärer att söka boka och köpa flygbiljetter. Wearable Technology blir mer och mer accepterat som nästa stora tillskott till det mobila ekosystemet och däri ligger intresset av att undersöka vad de mest hypade enheterna har att erbjuda för avancerande företag som TML. För att få en bättre insikt i vad det betyder att utveckla applikationer för enheter som markant skiljer sig från mobiltelefoner och surfplattor i avseende av prestanda och möjligheter gällande inmatning och utmatning av information tog vi fram de mest framträdande enheterna. De mest framträdande enheterna visade sig vara Google Glass, Android Wear och diverse smarta klockor. Utifrån dessa valdes Google Glass som vår plattform för att undersöka möjligheterna för wearables. Ett lämpligt sätt att förstå möjligheter och begränsningar inom användarinteraktion för Google Glass var att utveckla vår egen flygboknings applikation för Glass. Insikten vi fick var att det finns olika aspekter av Glass som begränsar den typ av applikation som kan göras för den. De två primära sakerna är begränsningar för hårdvara och det faktum att användarinteraktion har på ett vis tagit ett steg tillbaka. Från den grafiska direktmanipulering interaktion som vi idag är så vana vid i smartphones, till ett enkelt menysystem med begränsningar för hur mycket användaren kan interagera och hur mycket feedback programmet kan visa användaren.

This project utilizes speech recognition Application Program Interface (API) together with phonetic algorithms to search Stockholm's restaurant names via Google Glass with higher precision. This project considers the ability of phonetic algorithms and N-gram analyzer to retrieve the word and how it can be combined with automatic speech recognition to find the correct match. Significantly, the combination of these algorithms and the Google Glass limitation, e.g. its smallscreen, makes using a phonnetic filtering algorithm very helpful in getting better results.

The Internet is dramatically changing the way we communicate, and it is becoming increasingly important for communication services to adapt to context in which they are used. The goal of this thesis was to research how Google Glass and WebRTC can be used to create a communication system tailored for field service support. A prototype was created where an expert is able to provide guidance for a field technician who is wearing Google Glass. A live video feed is sent from Glass to the expert from which the expert can select individual images. When a still image is selected it is displayed to the technician through Glass, and the expert is able to provide instructions using real time annotations. An algorithm that divides the selected image into segments was implemented using WebGL. This made it possible for the expert to highlight objects in the image by clicking on them. The thesis also investigates different options for accessing the hardware video encoder on Google Glass.
Internet har dramatiskt ändrat hur vi kommunicerar, och det blir allt viktigare för kommunikationssystem att kunna anpassa sig till kontexten som de används i. Målet med det här examensarbetet var att undersöka hur Google Glass och WebRTC kan användas för att skapa ett kommunikationssystem som är skräddarsytt för support av fälttekniker. En prototyp skapades som låter en expert ge vägledning åt en fälttekniker som använder Google Glass. En videoström skickas från Glass till experten, och denne kan sedan välja ut enstaka bilder ur videon. När en stillbild väljs så visas den upp på Glass för teknikern, och experten kan sedan ge instruktioner med hjälp av realtidsannoteringar. En algoritm som delar upp den utvalda bilden i segment implementerades med WebGL. Den gjorde det möjligt för experten att markera objekt i bilden genom att klicka på dem. Examensarbetet undersöker också olika sätt att få tillgång till hårdvarukodaren för video i Google Glass.

Google Glass är ett par glasögon med utökade tekniska funktioner som är under utveckling av Google X. Denna kandidatuppsats undersöker hur produkten kommer att stå sig på marknaden. De områden som denna studie har valt att fokusera på är de säkerhetsfrågor som kan komma att uppstå gällande produkten. Säkerhetsfrågorna syftar på integritetsaspekten för användaren och dess omgivning, samt hantering och spridning av data. Det andra område som denna rapport analyserar är människa-datorinteraktion. Interaktionsstil samt utseende var de två faktorer som vägde tyngst gällande frågor kring MDI. En enkätundersökning och olika slags intervjuer genomfördes för att sammanställa ett kvantitativt respektive kvalitativt resultat. Resultatet av metoderna visar att det finns en skeptisk syn på produkten gällande utseendet, prissättningen och integritetsaspekterna.

Google Glass is a new personal computing device that employs an over-eyetransparent display together with voice-control in order to offer audiovisual informationto the device's users. Glass is also a new mediated-reality platform,fundamentally different from common computers and smartphones, and theavailable Glass application (Glassware) design guides do not fully cover human-computer interaction issues that are imposed by Glass' characteristics – issuessuch as optimum information density, use of colourization and positioningto separate information, optimum amount of discrete entities on display, and theuse of iconography. By combining existing guidelines for Glassware UI designwith past research on human-computer interaction and psychology, those issuescan be addressed and can lead to additional design principles. To evaluate theefficacy of such combinations within the technical and design limitations imposedby Google Glass, a set of UI mock-ups for fictional Glassware is createdand used in multiple surveys to acquire data on human response to those combinedfactors. During the study, it was determined that factors including colourization,element positioning and use of icons have a definite effect on user perceptionand preferences, whilst factors related to information density andamount of discrete entities on screen are less relevant. Additionally, supportingevidence was found in relation to the assumption that utility is more importantthan functionless aesthetics. As a result, a UI design guideline set was formulatedthat can be used to supplement existing UI design guidelines for GoogleGlass and similar over-eye transparent-screen devices.

La tesi è una rassegna storica e tecnica del Sistema Operativo Android, che parte da eventi del 1999 fino ad arrivare ai giorni nostri. É presente un'analisi della sua struttura del sistema e dell'anatomia di un'applicazione e si sviluppa fino agli usi alternativi di questo sistema operativo.

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Informational mobility has made possible various cultural transformations, among these transformations there is a new kind of nomadism, with wich we came to comunicate and produce content any time. As the wearables arrived to the Market, we began to have an intimate relation between technology and our body. Always on devices capture our information and act independently, storaging and evoking them when necessary. From these tecnological transformations resides also a constant concern with memory. Our production of information as a way to externalize the memory is growing and is related to our nomadic way of life provided by computing tecnologies. In order to understand the relations of social memory and facing the wearables scenario, the present work analises the photographic production in Google Glass aiming to discuss the externalization of memory through wearable computers, as a first look at the issue. The main authors used to theoretical basis of this research were Halbwachs, Le Goff, Garde-Hansen, Dijck, Ernst, Maffesoli, Lemos, Mitchell, McLuhan and Mann. Trough the method of Cultural Analytics, used to analyze huge volumes of image in a computerized way, there were developed different media views from information extracted from 680 images taken by Google Glass camera and posted on Flickr under Creative Commons license for 13 months. The results are divided into points of rupture and points of continuity in relation to photography and memory. There are evidences in the analyzed photographs of repetition of frameworks and themes that are traditional in photography and that are owned by a collective memory. However, we can also identify constituent elements of a language, brought by the use of Google Glass. The position of the camera above the eyes of the wearer print a point of view that can impact the evocation of memories afterwards. Indicative traits of learning in relation to the device, the predominance of outdoor photographs and forms of being present in the photographs also help to form an identity of these images through what they can influence memory.
A mobilidade informacional proporcionou diversas transformações culturais, entre elas um novo tipo de nomadismo, com o qual passamos a nos comunicar e produzir conteúdo em qualquer momento. Com a entrada dos wearables (computadores vestíveis) no mercado, passamos a ter uma ligação mais íntima da tecnologia com o corpo. Dispositivos always on captam nossas informações e atuam de forma independente, armazenando e evocando-as quando necessário. A partir destas transformações tecnológicas reside também uma constante preocupação com a memória. Nossa produção de informações, como uma forma de externalizar a memória, é crescente e está ligada ao nosso modo de vida nômade proporcionado pelas tecnologias informáticas. Em busca de compreender as relações da memória social e frente ao cenário dos wearables, o presente trabalho analisa a produção fotográfica do Google Glass com objetivo de problematizar a externalização da memória através dos computadores vestíveis, como um primeiro olhar sobre o tema. Os principais autores utilizados no embasamento teórico desta pesquisa foram Halbwachs, Le Goff, Garde-Hansen, Dijck, Ernst, Maffesoli, Lemos, Mitchell, McLuhan e Mann. A partir do método da Analítica Cultural, utilizado para analisar grandes volumes de imagem de forma computadorizada, foram desenvolvidas diferentes visualizações de mídia a partir de informações extraídas de 680 imagens capturadas pela câmera do Google Glass e publicadas no Flickr com licença Creative Commons, durante 13 meses. Os resultados encontrados dividem-se entre pontos de ruptura e pontos de continuidade em relação a fotografia e a memória. Há indícios nas fotografias analisadas de repetição de enquadramentos e de temáticas que são tradicionais da fotografia e que são pertencentes a uma memória coletiva. Entretanto, é possível identificar, também, elementos constituintes de uma linguagem própria, ocasionada pelo uso do Google Glass. A posição da câmera acima dos olhos de quem veste esse dispositivo imprime um ponto de vista que pode impactar na evocação das memórias posteriormente. Traços indicativos da aprendizagem em relação ao uso deste wearable, a predominância de fotografias ao ar livre e formas de fazer-se presente nas fotografias também ajudam a formar uma identidade destas imagens através do que podem influenciar na memória.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
Informational mobility has made possible various cultural transformations, among these transformations there is a new kind of nomadism, with wich we came to comunicate and produce content any time. As the wearables arrived to the Market, we began to have an intimate relation between technology and our body. Always on devices capture our information and act independently, storaging and evoking them when necessary. From these tecnological transformations resides also a constant concern with memory. Our production of information as a way to externalize the memory is growing and is related to our nomadic way of life provided by computing tecnologies. In order to understand the relations of social memory and facing the wearables scenario, the present work analises the photographic production in Google Glass aiming to discuss the externalization of memory through wearable computers, as a first look at the issue. The main authors used to theoretical basis of this research were Halbwachs, Le Goff, Garde-Hansen, Dijck, Ernst, Maffesoli, Lemos, Mitchell, McLuhan and Mann. Trough the method of Cultural Analytics, used to analyze huge volumes of image in a computerized way, there were developed different media views from information extracted from 680 images taken by Google Glass camera and posted on Flickr under Creative Commons license for 13 months. The results are divided into points of rupture and points of continuity in relation to photography and memory. There are evidences in the analyzed photographs of repetition of frameworks and themes that are traditional in photography and that are owned by a collective memory. However, we can also identify constituent elements of a language, brought by the use of Google Glass. The position of the camera above the eyes of the wearer print a point of view that can impact the evocation of memories afterwards. Indicative traits of learning in relation to the device, the predominance of outdoor photographs and forms of being present in the photographs also help to form an identity of these images through what they can influence memory.
A mobilidade informacional proporcionou diversas transforma??es culturais, entre elas um novo tipo de nomadismo, com o qual passamos a nos comunicar e produzir conte?do em qualquer momento. Com a entrada dos wearables (computadores vest?veis) no mercado, passamos a ter uma liga??o mais ?ntima da tecnologia com o corpo. Dispositivos always on captam nossas informa??es e atuam de forma independente, armazenando e evocando-as quando necess?rio. A partir destas transforma??es tecnol?gicas reside tamb?m uma constante preocupa??o com a mem?ria. Nossa produ??o de informa??es, como uma forma de externalizar a mem?ria, ? crescente e est? ligada ao nosso modo de vida n?made proporcionado pelas tecnologias inform?ticas. Em busca de compreender as rela??es da mem?ria social e frente ao cen?rio dos wearables, o presente trabalho analisa a produ??o fotogr?fica do Google Glass com objetivo de problematizar a externaliza??o da mem?ria atrav?s dos computadores vest?veis, como um primeiro olhar sobre o tema. Os principais autores utilizados no embasamento te?rico desta pesquisa foram Halbwachs, Le Goff, Garde-Hansen, Dijck, Ernst, Maffesoli, Lemos, Mitchell, McLuhan e Mann. A partir do m?todo da Anal?tica Cultural, utilizado para analisar grandes volumes de imagem de forma computadorizada, foram desenvolvidas diferentes visualiza??es de m?dia a partir de informa??es extra?das de 680 imagens capturadas pela c?mera do Google Glass e publicadas no Flickr com licen?a Creative Commons, durante 13 meses. Os resultados encontrados dividem-se entre pontos de ruptura e pontos de continuidade em rela??o a fotografia e a mem?ria. H? ind?cios nas fotografias analisadas de repeti??o de enquadramentos e de tem?ticas que s?o tradicionais da fotografia e que s?o pertencentes a uma mem?ria coletiva. Entretanto, ? poss?vel identificar, tamb?m, elementos constituintes de uma linguagem pr?pria, ocasionada pelo uso do Google Glass. A posi??o da c?mera acima dos olhos de quem veste esse dispositivo imprime um ponto de vista que pode impactar na evoca??o das mem?rias posteriormente. Tra?os indicativos da aprendizagem em rela??o ao uso deste wearable, a predomin?ncia de fotografias ao ar livre e formas de fazer-se presente nas fotografias tamb?m ajudam a formar uma identidade destas imagens atrav?s do que podem influenciar na mem?ria.

Sjukvården är ett område som man ständigt försöker förbättra med ny teknik för att kunna ge bättre vård och rädda fler liv. En teknik som på senaste åren hamnat allt mer i fokus inom sjukvården är Augmented Reality. Det här arbetet har utförts med målet att utveckla en heuristisk utvärderingsmetod som ska kunna appliceras på Augmented Reality-teknik inom prehospital vård. För att nå målet så utvecklades en Augmented Reality-prototyp som till plattformen Google Glass. Med hjälp av resultat från användartester av prototypen som genomförts av sjukvårdare så utvecklades en lista bestående av 11 stycken heuristiker. Heuristikerna har använts för att utvärdera prototypen som utvecklades och heuristikerna var effektiva för att hitta designproblem hos prototypen.

Da alcuni anni in ambito business ed enterprise si sta diffondendo l'utilizzo di dispositivi wearable al fine di rendere più efficiente ed efficace la gestione di molteplici attività e processi aziendali. I sistemi hand-held comunemente utilizzati in ambito lavorativo, tra cui smartphone e tablet, spesso non risultano idonei in contesti in cui un operatore debba interagire con il dispositivo mentre ha le proprie mani impegnate con attrezzature e strumenti di lavoro. I sistemi hands-free rimediano a tali problematiche supportando tecniche di interazione non convenzionali che consentono all'operatore di mantenere libere le proprie mani durante la consultazione del dispositivo e di rimanere concentrato sull'attività che sta svolgendo. I sistemi basati su smart-glass, oltre ad offrire funzionalità hands-free, presentano l'ulteriore vantaggio di poter presentare all'interno del campo visivo dell'utente importanti informazioni di supporto inerenti all'attività che sta svolgendo, avvalendosi anche dell'utilizzo di tecnologie di realtà aumentata. La sinergia tra dispositivi basati su smart-glass e tecniche di realtà aumentata sta destando un crescente interesse sia in ambito accademico che industriale; esiste la possibilità che in un prossimo futuro questa tipologia di sistemi divenga la nuova piattaforma computazionale enterprise di riferimento. L'obiettivo di questo lavoro di tesi è stato lo studio e la progettazione di una soluzione hands-free basata su smart-glass in grado di supportare alcune attività di customer care del Gruppo Loccioni, una società che si occupa dello sviluppo di sistemi automatici di misura e controllo per migliorare la qualità, l'efficienza e la sostenibilità di prodotti, processi ed edifici. In particolare, il sistema sviluppato ha consentito di migliorare la gestione dei processi di manutenzione e riparazione degli impianti energetici sostenibili che il Gruppo Loccioni installa presso le sedi di imprese clienti.

This thesis evaluates how a head mounted display (HMD) can be used to increase usability compared to existing computer programs that are used during maintenance work on vehicles. Problems identified during a case study in a vehicle workshop are first described. As an attempt to solve some of the identified problems a prototype application using a HMD was developed. The prototype application aids the user during troubleshooting of systems on the vehicle by leading the mechanic with textual information and augmented reality (AR). Assessment of the prototype application was done by comparing it to the existing computer program and measuring error rate and time to completion for a predefined task. Usability was also measured using the System Usability Scale. The assessment showed that HMDs can provide higher usability in terms of efficiency and satisfaction. Furthermore, the thesis describes and discusses other possibilities and limitations that usage of HMDs and AR can lead to that were identified both from theory and during implementation.

Quest' ultimo ventennio ha visto una vera e propria rivoluzione dei dispositivi, partendo dal computer desktop, passando ai laptop fino ad arrivare agli smartphone. Oggi giorno invece si parla di computer indossabili, i dispositivi stanno diventando sempre più piccoli e integrati in oggetti di moda come possono essere degli orologi, occhiali e orecchini.Questi sono connessi in rete con migliaia di dispositivi e con computer più grandi, con i quali, gli utenti nel corso della giornata interagiscono continuamente senza nemmeno rendersene conto scambiandosi migliaia di piccole informazioni: quando si cammina per strada, in centro città quando si fanno compere, quando si è in casa a guardare la TV. Questo ha portato quindi alla nascita di una nuova tipologia di sistemi, in risposta ai cambiamenti portati da questa rivoluzione, i così detti "Sistemi Context-Aware".Il context di un utente può essere descritto come la relazione che vi è tra i suoi dispositivi elettronici, e l' ambiente che lo circonda, a seconda di dove si trova esso dovrà dare delle risposte opportune, e compiere quindi autonomamente certe azioni, tal volta ad insaputa dell' utente. Le applicazioni che usano quindi questo sistema, vengono continuamente messe a conoscenza dei cambiamenti che vengono apportati all' ambiente circostante, regolandosi e reagendo di conseguenza in autonomia. Ad esempio, il nostro dispositivo scopre tramite la rete, la presenza di un amico nelle vicinanze, mentre stiamo passeggiano per strada, allora potrebbe inviarci un messaggio mostrandoci chi è, e dove si trova, con il tragitto da percorrere per raggiungerlo. Le migliaia di informazioni che vengono quindi scambiate in rete andranno a creare “un ambiente intelligente”, con il quale gli utenti interagiscono inviando informazioni sul proprio conto, senza nemmeno accorgersene, in modo da avere una risposta personalizzata, da parte dell' ambiente.

In this thesis research, we investigate the usability of hand-held display (Tablet PC) and wearable head-mounted display (Google Glass) interfaces and their effect on doctor-patient interaction during clinical ward round in the hospital. We looked at existing literature to identify existing research about our topic. Using a User Centered Interaction Design process we developed a prototype hybrid system that used both a hand-held and head-mounted display. An evaluation of this prototype with a hand-held system and a paper based interface was performed in a simulated patient room with 20 doctors and 5 patients. The participants were observed, surveyed, and interviewed about their experiences. Generally, the patients had a high satisfaction rate and felt the interfaces were not causing the doctors to lose focus on them. The doctors found the hand-held display by itself and existing paper-based interface to be the most usable and least distracting interfaces for accessing patient information during clinical ward rounds.

The main aim of this thesis was to evaluate the performance of the contrast sensitivity clock (CSC), a new screening device for measuring contrast sensitivity (CS) and glare. This device allows CS without glare, with glare and disability glare scores to be recorded. After initial data collection the design of the CSC was slightly amended improving the performance of the device. The amended design of the CSC was shown to be a valid, discriminative and repeatable measure for purpose. The CSC is also a quick test to perform and is relatively cheap to produce. If all these factors are considered it shows potential to become the test of choice for the assessment of visual glare. A head-mounted display system was also evaluated in terms of the glare effects it may cause. The monocular display screen of the device significantly reduced the CS of the eye directly exposed but also had an effect on binocular performance, reducing amounts of binocular summation. Electronic devices, including head-mounted displays and satellite navigation systems can seriously affect CS at low luminance levels, similar to those found when driving at night.

Bien qu’ils soient largement utilisés dans le domaine, les mesures vibratoires classiques présentent plusieurs limites. A la base, l’analyse vibratoire ne peut identifier qu’environ 60% des défauts qui peuvent survenir dans les machines. Cependant, les principaux inconvénients des mesures de la vibration sont l’accès difficile au système de transmission afin d’y placer le capteur ainsi que le coût conséquent de la mise en œuvre. Ceci résulte en des problèmes de sensibilité relatifs à la position de l’installation et ceux de difficulté pour distinguer la source de vibration à cause de la diversité des excitations mécaniques qui existent dans l’environnement industriel.Par conséquent, l’analyse des signatures du courant électrique des moteurs s’impose comme une alternative prometteuse à l’analyse vibratoire et a donc fait l’objet d’une attention grandissante au cours des dernières années. En effet, l’analyse des signatures électriques a l’avantage d’être une méthode techniquement accessible, non-intrusive au système et peu coûteuse. Les techniques basées sur le courant et la tension ne requièrent que les mesures électriques du moteur qui sont souvent déjà surveillées pour le contrôle et la protection des machines électriques. Ce processus a été principalement utilisé pour la détection des défauts de moteur tels que la rupture de barres du rotor et les défauts d’excentricité ainsi que les défauts de roulements. En revanche, très peu de recherches concernent la détection des défauts en utilisant l’analyse du courant. En outre, les signaux électriques triphasés sont caractérisés par des représentations géométriques particulières liées à leur forme d’onde qui peuvent servir en tant qu’indicateurs différents offrant des informations supplémentaires. Parmi ces indicateurs géométriques, les transformées de Park et de Concordia modélisent les composantes électriques dans un repère bidimensionnel et toute déviation par rapport à la représentation d’origine indique l’apparition d’un dysfonctionnement. Aussi, les équations différentielles de Frenet-Serret représentent la trajectoire du signal dans un espace euclidien tridimensionnel et indiquent ainsi tout changement dans l’état du système. Bien qu’ils aient été utilisés pour les défauts de roulements, ces indicateurs n’ont pas été appliqués dans la détection des défauts d’engrenages en utilisant l’analyse des signatures des courants électriques. D’où l’idée novatrice de combiner ces indicateurs avec des techniques de traitement de signal, ainsi que des techniques de classification pour le diagnostic des engrenages en utilisant l’analyse des signatures de courant et de tension du moteur électrique.Ainsi, dans ce travail, on propose une nouvelle approche pour le diagnostic des défauts d’engrenages en utilisant l’analyse des courants et des tensions électriques du stator de la machine et ceci en se basant sur un ensemble d’indicateurs géométriques (Transformées de Park et de Concordia ainsi que les propriétés du repère Frenet-Serret). Ces indicateurs font partie d’une bibliothèque de signatures de défauts qui a été construite et qui comprend également les indicateurs classiques utilisés pour un large éventail de défauts. Ainsi, un algorithme combine les acquisitions expérimentales des signaux électriques à des méthodes de traitement de signal avancées (décomposition modale empirique,…). Ensuite, celui-ci sélectionne les indicateurs les plus pertinents au sein de la bibliothèque en se basant sur les algorithmes de sélection de paramètres (sélection séquentielle rétrograde et analyse des composantes principales). Enfin, cette sélection est utilisée pour la classification non-supervisée (K-moyennes) pour la distinction entre l’état sain et l’état défaillant
Although they are widely used, classical vibration measurements have several limitations. Vibration analysis can only identify about 60% of the defects that may occur in mechanical systems. However, the main drawbacks of vibration measurements are the difficult access to the transmission system in order to place the sensor as well as the consequent cost of implementation. This results in sensitivity problems relative to the position of the installation and the difficulty to distinguish the source of vibration because of the diversity of mechanical excitations that exist in the industrial environment.Hence, the Motor Current Signatures Analysis (M.C.S.A.) represents a promising alternative to the vibration analysis and has therefore been the subject of increasing attention in recent years. Indeed, the analysis of electrical signatures has the advantage of being a technically accessible method as well as inexpensive and non-intrusive to the system. Techniques based on currents and voltages only require the motor’s electrical measurements which are often already supervised for the purposes of the control and the protection of the electrical machines. This process was mainly used for the detection of motors faults such as rotor bars breakage and eccentricity faults as well as bearings defects. On the other hand, very little research has been focused on gear faults detection using the current analysis. In addition, three-phase electrical signals are characterized by specific geometric representations related to their waveforms and they can serve as different indicators providing additional information. Among these geometric indicators, the Park and Concordia transforms model the electrical components in a two-dimensional coordinate system and any deviation from the original representation indicates the apparition of a malfunction. Moreover, the differential equations of Frenet-Serret represent the trajectory of the signal in a three-dimensional euclidean space and thus indicate any changes in the state of the system. Although they have been previously used for bearing defects, these indicators have not been applied in the detection of gear defects using the analysis of electrical current signatures. Hence, the innovative idea of combining these indicators with signal processing techniques, as well as classification techniques for gears diagnosis using the three-phase motor’s electrical current signatures analysis is established.Hence, in this work, a new approach is proposed for gear faults diagnosis using the motor currents analysis, based on a set of geometric indicators (Park and Concordia transforms as well as the properties of the Frenet-Serret frame). These indicators are part of a specifically built fault signatures library and which also includes the classical indicators used for a wide range of faults. Thus, a proposed estimation algorithm combines experimental measurements of electrical signals with advanced signal processing methods (Empirical Mode Decomposition, ...). Next, it selects the most relevant indicators within the library based on feature selection algorithms (Sequential Backward Selection and Principal Component Analysis). Finally, this selection is combined with non-supervised classification (K-means) for the distinction between the healthy state and faulty states. It was finally validated with a an additional experimental configuration in different cases with gear faults, bearing faults and combined faults with various load levels

碩士
國立交通大學
多媒體工程研究所
105
This thesis discusses the topic of automatic segmentation and summarization of videos taken with Google Glasses. Using the information from both the video images and additional sensor data that are recorded concurrently, we devise methods that automatically divide the video into coherent segments and estimate the importance of the extracted segments. Such information then enables automatic generation of video summary. The features used include colors, image details, motions, and speeches. We then train multi-layer perceptrons for the two tasks (segmentation and importance estimation) according to expert annotations. We also present a systematic evaluation procedure that compares the automatic segmentation and importance estimation results with those given by multiple users and demonstrate the effectiveness of our approach.

Localization is critical to a number of wireless network applications. In many situations GPS is not suitable. This dissertation (i) develops novel localization schemes for wireless networks by explicitly incorporating mobility information and (ii) applies localization to physical analytics i.e., understanding shoppers' behavior within retail spaces by leveraging inertial sensors, Wi-Fi and vision enabled by smart glasses. More specifically, we first focus on multi-hop mobile networks, analyze real mobility traces and observe that they exhibit temporal stability and low-rank structure. Motivated by these observations, we develop novel localization algorithms to effectively capture and also adapt to different degrees of these properties. Using extensive simulations and testbed experiments, we demonstrate the accuracy and robustness of our new schemes. Second, we focus on localizing a single mobile node, which may not be connected with multiple nodes (e.g., without network connectivity or only connected with an access point). We propose trajectory-based localization using Wi-Fi or magnetic field measurements. We show that these measurements have the potential to uniquely identify a trajectory. We then develop a novel approach that leverages multi-level wavelet coefficients to first identify the trajectory and then localize to a point on the trajectory. We show that this approach is highly accurate and power efficient using indoor and outdoor experiments. Finally, localization is a critical step in enabling a lot of applications --- an important one is physical analytics. Physical analytics has the potential to provide deep-insight into shoppers' interests and activities and therefore better advertisements, recommendations and a better shopping experience. To enable physical analytics, we build ThirdEye system which first achieves zero-effort localization by leveraging emergent devices like the Google-Glass to build AutoLayout that fuses video, Wi-Fi, and inertial sensor data, to simultaneously localize the shoppers while also constructing and updating the product layout in a virtual coordinate space. Further, ThirdEye comprises of a range of schemes that use a combination of vision and inertial sensing to study mobile users' behavior while shopping, namely: walking, dwelling, gazing and reaching-out. We show the effectiveness of ThirdEye through an evaluation in two large retail stores in the United States.
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This dissertation describes a project to create a prototype application for Google Glass,where the purpose is to help assembly line industries by allowing workers to see instructionsvisually while working with both hands free. This solves the problem of requiringan instruction manual since instead all instructions will be stored in a database. GoogleGlass retrieves and displays the information for the user after scanning a QR-code forthe product which is going to be assembled. An important aspect is to see if such a systemis powerful enough for industries to start working with Google Glass. This conceptwas developed into a working prototype system, where Google Glass can retrieve data byscanning a QR-code that contains information about a specific product. This informationwill give a step by step instruction on which components the product contains and theinstructions for assembling them. The results presented in this dissertation shows thatGoogle Glass is not suited for the industry at its current state.

Assembling components in a production line could potentially be a tedious task, if performed stepwise by the book. However, an employee who is assembling many different products may not know all the steps by heart. As such they will be reliant on an instruction manual. However, an instruction manual must be carried around and, while assembling components, placed in the assembler's line of sight. Instead new technology could make the process more efficient. Google Glass places a display slightly above the user's line of sight and can be controlled via voice commands, and as such solves many of the problems associated with carrying around instruction manuals. This dissertation is an evaluation of Google Glass and describes the design, implementation and evaluation of an product assembly application for both Google Glass and smartphones. The smartphone version was implemented in order to provide a reference point as well as means of comparison with the Google Glass application. The test application used in the study was to read a QR code and download a set of assembly instructions. Testing was carried out on the different steps of the application, from when the QR code had been scanned until the information was displayed to the user. The results show that Google Glass is almost always slower, in all steps, compared to the smartphone equivalents. The conclusion is that Google must upgrade and improve on Google Glass and in particular the hardware. Google Glass overheats easily and the camera is of inferior quality. Google's implementation restrictions also limits what developers might be able to do with the device. However, Google Glass is easy to use and has potential to become a more useful device in the future.
Montering av komponenter i en produktionslinje kan potentiellt vara en tradig och mekanisk uppgift, om det utförs stegvis enligt instruktioner. En anställd som bygger många olika produkter kan dock eventuellt inte samtliga steg utantill, utan blir beroende av en bruksanvisning. En bruksanvisning måste dock bäras runt och, vid montering av komponenter, lämnad i monterarens siktlinje. Ny teknik skulle kunna göra processen mer effektiv. Google Glass heter den enhet som placerar en display något över användarens siktlinje och kan styras via röstkommandon, och löser således många av de problem som är förknippade med att bära runt en bruksanvisning. Denna uppsats är en utvärdering av Google Glass och beskriver utformning, implementering och utvärdering av en produktsammansättningsapplikation för både Google Glass och smarttelefoner. Smarttelefon-versionen implementerades i syfte att ge en referenspunkt samt medel för jämförelse med Google Glass applikationen. Test-applikationen som används i studien kan skanna en QR-kod och ladda ner en uppsättning monteringsanvisningar. Testning utfördes på de olika stegen i applikationen, från när QR-koden har skannats tills informationen visas för användaren. Resultaten visar att Google Glass nästan alltid är långsammare, i alla steg, jämfört med smarttelefon-ekvivalenter. Slutsatsen är att Google måste uppgradera och förbättra Google Glass, och särskilt hårdvaran. Google Glass överhettas lätt och kameran är av sämre kvalitet. Googles implementationsbegränsningar begränsar också vad utvecklarna skulle kunna göra med enheten. Google Glass är dock lätt att använda och har potential att bli en mer användbar enhet i framtiden.

碩士
國立清華大學
工業工程與工程管理學系
103
Wearable device has been becoming popular over the past few years. With the fast development of the computer network technology, the functions and performance of head mounted displays are constantly making progress. There are few researches addressing the issues of user interface design of head mounted display. This study considered the font size and font lightness of Google Glass to determine the best setting of user interface elements in see-through head-mounted display and investigate the usability in different application situations. In here, the reading completion time, error rate, and the subjective measures including SUS and NASA-TLX were collected. Then, the critical fusion frequency value and eye fatigue scale were collected to evaluate the differences of visual fatigue after reading articles using Google Glass. Lastly, the users are invited to assess the overall feelings and preference through interview. The results indicated that the completion time of women was better than men. The font size, font lightness and reading situation showed significant effects on reading performance and subjective comfort level. In static situation, the best font size was 24 pt and the best font lightness was 165. In dynamic situation, the best font size was 32 pt and the best font lightness was 210. From the overall evaluation, the study observed that the font size must be greater than 24 pt, 32 pt was the best font size and font lightness must be brighter than 165, and 210 was the best. In addition, the results also indicated when users are reading on Google Glass at a static situation, the measures in eye fatigue, usability and mental workload were better than those in a dynamic reading situation. The results of this study can provide very important reference information for interface design of Google glass related products.

碩士
國立臺中科技大學
資訊管理系碩士班
104
Nowadays, Wi-Fi wireless network technology is used widely. Wi-Fi chip is a standard equipment in most smart devices, and is used to connect the Internet and transfer data to each device. It can detect connection quality of the Internet and signal strength of Wi-Fi access point which named RSSI (Received signal strength indication). Subsequently, there is more and more indoor positioning applications seen in the literature. However, traditional triangulation positioning algorithm has been unable to provide accuracy. One of the main goals is to develop an indoor positioning algorithm to improve the accuracy. In order to prove the usability, this study develops an enhanced triangulation positioning algorithm with Google Glass for indoor guidance. The results present the proposed algorithm has better accuracy and is applicable in a simulated exhibition room with a few art works. Furthermore, positive feedback is found from 68 users.

碩士
國立臺北商業技術學院
商學研究所
102
Under the rapid development of technology and network, smartphones have now become part of people's daily life. Today the thesis goes one step further to discuss the next leading-trend mobile gadget-wearable devices. As wearable devices are still in the early stage of development, the future adaptation has also drawn the attention of many. With this in mind, the subject of the study focuses on exploring one of the most representing wearable devices—Google Glass, to do an in-depth research on its actual practicality along with the related influencing factors and also, to see if there are any usage difference comparing with other previous technology products. 301 questionnaires are released via paper and internet and in total 283 copies are collected. The samples then undergo T test to rule out any possible response bias that can affect the validity of the study. Smart PLS 2.0 software is used to test the reliability and validity of questionnaires as well as to make graphical path analysis. GoF model and Sobel Test are also the analytical tools employed in the study. The results of the study show that in addition to the perceived ease-of-use, attitude, subjective norm and other perceived behavior control factors still play significant roles to potential users』 perception of Google Glass. In other words, even when potential users have not yet experienced in person the wearable devices, it is still obvious to identify the key elements that will influence their acceptations which in turn gives companies a clearer direction when deciding marketing plans.