Dissertations / Theses: 'Webcare'

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Weitzl, Wolfgang. "Webcare's effect on constructive and vindictive complainants." Emerald Publishing Limited, 2019. http://dx.doi.org/10.1108/JPBM-04-2018-1843.

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Purpose: This paper aims to demonstrate that online complainants' reactions to a company's service recovery attempts (webcare) can significantly vary across two different types of dissatisfied customers ("vindictives" vs "constructives"), who have dramatically diverging complaint Goal orientations. Design/methodology/Approach: Online multi-country survey among 812 adult consumers who recently had a dissatisfying brand experience and turned to a marketer-generated social media site to voice an online complaint for achieving their ultimate complaining goals. Scenario-based online experiment for cross-validating the survey findings. Findings: Results suggest that "vindictive complainants" - driven dominantly by brand-adverse motives - are immune to any form of webcare, while "constructive complainants" - interested in restoring the customer-brand relationship - react more sensitively. For the latter, "no-responses" often trigger detrimental brand-related reactions (e.g. unfavorable brand image), whereas "defensive Responses" are likely to stimulate postwebcare negative word-of-mouth. Research limitations/implications: This research identifies the gains and harms of (un-)desired webcare. By doing so, it not only sheds light on the circumstances when marketers have to fear negative effects (e.g. negative word-of-mouth) but also provides insights into the conditions when such effects are unlikely. While the findings of the cross-sectional survey are validated with an online experiment, findings should be interpreted with care as other complaining contexts should be further investigated. Practical implications: Marketers have to expect a serious "backfiring effect" from an unexpected source, namely, consumers who were initially benevolent toward the involved brand but who received an inappropriate response.

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Gustafsson, Lina, and Hanna Nathassia Sabrina Julkunen. "Sminkat ansvar : Relationshantering på sociala medier." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-22405.

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I samband med att dagens konsumenter blir allt mer medvetna om de globala, sociala och miljömässiga konsekvenser som vår konsumtion medför, har det på senare år ställt större krav ett på företagens arbetssätt mot ett mer hållbart och etiskt verksamhetsutövande. Av denna anledning har företagens ansvarstagande för miljön och samhället blivit en central fråga i företagsekonomiska diskussioner, även känt som Corporate Social Responsibility (CSR). Syftet med CSR- strategier är att ett företag, på eget bevåg integrerar sociala, miljömässiga, ekonomiska eller/och etiska hänsyn i sin affärsmodell, samt i relation till intressenter, utöver vad lagen kräver. CSR blir allt vanligare bland företag att använda som ett verktyg för att kommunicera sitt CSR-arbete är via sociala medier. Den ökade användningen av sociala medier har förändrat kommunikationen för både företag och konsumenter, då det har skapat nya möjligheter att integrera med varandra. Användningen av sociala medier kan därmed vara ett effektivt verktyg inom marknadskommunikation, då det kan användas som en direkt kommunikation till sina målgrupper, samt användas för att bygga, bevara och vårda relationen till sina konsumenter. Vidare har sociala mediers användning också ökat transparensen, då det skapar en tillgänglighet till information om företag, som konsumenter tidigare inte fått tillgång till. Detta ställer därmed krav på att företagens marknadskommunikation, inte minst inom CSR hanteras effektivt, då CSR är ett starkt debatterat ämne bland dagens konsumenter. Många företag ser möjligheterna med att använda sociala medier, däremot om det inte används eller hanteras rätt, kan det likväl visa sig vara ett hinder som det är en fördel. Eftersom sociala medier skapar en möjlighet för konsumenter att lämna feedback, som i många fall inom CSR kan vara negativt, skapar det också möjligheten till att enkelt sprida Negative Word of Mouth (NWOM), dvs negativa budskap om ett företag. Att kommunicera CSR på sociala medier kan således upplevas som en utmaning för företag. Kan företag hantera sociala medier kan det användas som ett effektivt marknadskommunikationsverktyg. Därför är det betydelsefullt att använda tydliga strategier som kan hantera möjliga konflikter som kan uppstå i samband med diskussioner om CSR på sociala medier. Behandlar företag inte konflikterna kan det påverka konsumenters attityder och köpintentioner, och slutligen deras relationer till ett varumärke. Syftet med studien är att undersöka och observera strategier inom marknadskommunikation med CSR-inriktning på sociala mediet Facebook [Facebooksidor]. Vidare kartlägger studien möjliga utmaningar som de observerade strategierna medför inom kosmetikabranschen, i syfte med att få en ökad förståelse för strategihanteringar inom marknadskommunikation. För att undersöka CSR-kommunikation på sociala medier har studien avgränsats till kosmetikabranschen som en empirisk kontext, då det i dagsläget pågår stora diskussioner om CSR inom branschen. Studien resulterade i en CSR-integrerad relationshanteringsmodell och som observerade två huvudkategorier: Verbala och Icke-verbala relationshanteringsstrategier. Dessa innefattar fyra olika hanteringsstrategier; tillmötesgående, defensiv, censurerande och oengagerade. Studien resulterade även i vilka utmaningar, dvs svårigheter företag har när de använder sociala medier [Facebooksidor] inom CSR. Det observerade tre omfattade utmaningar; (1), det är svårt att kompensera en missnöjd konsument ämnen inom CSR går bortom transaktionen och är mer baserat på en individs emotioner. Då CSR är ett komplext ämne, blir det utmanande för företaget att kompensera en missnöjd kund då CSR handlar om att integrera socialt och miljömässigt ansvarstagande i hela företagets affärsmodell. (2) CSR-diskussioner är svåra att hantera för företag med traditionella kundservice-strategier inom social media marketing och webcare. (3) Företag som inte har CSR integrerat i sin affärsmodell från grunden har svårt att skapa, bevara och vårda relationen till sina konsumenter inom CSR-diskussioner.
As today's consumers become increasingly aware of the global, social and environmental consequences that our consumption brings, has in recent years influenced companies' way towards business ethics and sustainability. Therefore, corporate responsibility for the environment and society has become a central subject in business decisions, also known as Corporate Social Responsibility (CSR). The purpose of CSR is to encourage and integrate the work of ethical, financial, social and environmental aspects of business processes, and in relation to stakeholders, in addition to what the law requires. One tool that is becoming more common among companies when communicating their CSR work, is via social media. The increased use of social media has changed the communication for both companies and consumers, as it has created new opportunities to integrate with one another. The use of social media can thus be an effective tool in market communication, as it can be used as a direct communication tool to its target groups, as well as be used to build, maintain and nurture the relationship with its consumers. In addition, social media has increased the transparency, as it creates accessibility to information, whereas the consumers have more information and insight about companies today. Which demands on companies' marketing communications to be handled effectively, not least in the field of CSR, since social responsibility is a highly debated topic among today's consumers. Companies are becoming more aware of the possibilities of using social media, however, if it is not used or handled properly, it can also prove to be an obstacle as it is an advantage. Since social media creates an opportunity for consumers to provide feedback, which in many cases within CSR can be negative, it can also create the opportunity to easily spread Negative Word of Mouth (NWOM). Thus, communicating CSR on social media can therefore be a challenge for companies. If companies can manage social media, it can be used as an effective marketing communication tool. Therefore, it is important to use strategies that can handle possible conflicts that may arise in discussions of CSR on social media. If it is not handled, it can affect consumers' attitudes and purchase intentions, and ultimately their relationships with a brand. The purpose of this study is to investigate and observe strategies in market communication with CSR discussions on the social media platform, Facebook [Facebook pages]. Furthermore, identify possible challenges that the observed strategies pose, with the aim of gaining an increased understanding of strategy management in market communication. To study CSR communication on social media, the study has delimited to the cosmetics industry, as an empirical context, due to currently great discussions about CSR among consumers. The study resulted in a CSR-integrated relationship management model and observed two main categories: Verbal and non-verbal relationship management strategies. which includes four different management strategies; accommodating, defensive, censorship and non-engaging. The study also resulted in different difficulties companies have when using social media [Facebook pages] within the field of CSR. It observed three major difficulties/challenges; (1) It is difficult to satisfy a displeased consumer within the concept of CSR, due to the concept of CSR goes beyond the transaction and it is more based on an individual's emotions. As CSR is a complex subject, the difficulty of compensating a dissatisfied customer becomes challenging as CSR is about integrating social and environmental responsibility into the entire business model. (2) CSR discussions are difficult to manage for companies with traditional customer service strategies in social media marketing and webcare. (3) Companies that do not have integrated CSR into their business model from start, finds it difficult to create, maintain and nurture the relationship with their consumers within CSR discussions.

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Correa, Matías, Felipe Court, Nicolás González, Daniel Montedonico, and Rodrigo Palma. "Webcard : medios de pago electrónico para sitios web." Tesis, Universidad de Chile, 2002. http://www.repositorio.uchile.cl/handle/2250/111908.

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Seminario para optar al grado de Ingeniero Comercial
El objetivo principal de este trabajo, fue hacer una investigación y desarrollo con varios propósitos, el primero es analizar el posible lanzamiento de nuevas formas de pago para compras por internet. De ver posibilidades de lanzamiento, la investigación de mercado nos mostrara las necesidades del mercado en este aspecto, los distintos segmentos y las necesidades críticas a satisfacer para cada uno de estos segmentos. Además esta primera investigación nos guiará en todos los procesos iniciales de marketing, los cuales se irán perfeccionando con el inicio de actividades y nuevas investigaciones. En un primer paso se buscó información secundaria sobre el tema de estudio, formas de pago actuales, evolución del mercado, aceptación de este tipo de tecnologías y servicios etc. La mayor parte de esta información se recolecto desde la publicación LA ECONOMÍA DIGITAL EN CHILE 2002, del CENTRO DE ESTUDIOS DE LA ECONOMÍA DIGITAL EDITORIAL “CÁMARA DE COMERCIO DE SANTIAGO” y desde algunas páginas de internet. Luego la etapa cuantitativa, se desarrolló a través de entrevistas personales a individuos que sean usuarios de internet (Entiéndase que posean el suficiente manejo potencial de internet para poder realizar compras). El número de personas entrevistadas fue superior a las 198 personas, de las cuales solo se analizaron 195 muestras (Por razones de pesos dentro de los grupos). Las 195 muestras se distribuyeron de la siguiente manera: 61.54% hombres 38.46% mujeres. Estos porcentajes se usaron dados los datos recolectados sobre usuarios y compradores a través de internet, y realizando una leve corrección dada la evolución de estos.

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Fox, Michael. "Selbstdarstellungs-Medium Webcam? Persönlichkeitsmerkmale und Ziele von Webcam-Nutzern." Master's thesis, Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600701.

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Untersucht wurde, ob und wie Webcams auf privaten Homepages im Internet als Selbstdarstellungs-Medium genutzt werden und welchen Einfluss dabei Persönlichkeitsmerkmale und Ziele von Webcam-Nutzern ausüben. An einer internetbasierten Befragung nahmen 62 Personen teil, die über eine zufallsgesteuerte Stichprobe ermittelt wurden. In der Befragung wurden die Persönlichkeitsvariablen der Big Five und Authentizität erhoben, sowie interessierende Facetten des Narzissmus, der Selbstwertschätzung, der Selbstüberwachung sowie neun Stile der Selbstdarstellung. Darüber hinaus machten die Teilnehmer Angaben zu Webcam-Motiven, Gründe für die Installation der Webcam, Zielgruppen und Nutzungsweisen von Webcams sowie zu weiteren interessierenden webcam- und homepage-spezifischen Merkmalen. Erste Ergebnisse zeigen, das Webcams auf privaten Homepages zur authentischen Selbstdarstellung verwendet werden. Weiterhin unterscheiden sich Webcam-Besitzer nur marginal hinsichtlich der erhobenen Persönlichkeitsvariablen von Vergleichsstichproben und von Homepage-Besitzern. Dabei richten sich Webcam-Besitzer vorrangig an ein persönlich bekanntes oder nichtbekanntes Publikum und verwenden auch im realen Leben bevorzugte Selbstdarstellungsstile. Abschließend wird die Darstellung der Webcam-Nutzung in öffentlichen Medien kritisch disskutiert und Anregungen für die weitere Forschung in diesem Bereich gegeben.

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Brown, William C. "Credible Webcast for Financial Communications." NSUWorks, 2004. http://nsuworks.nova.edu/gscis_etd/428.

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A growing body of knowledge suggests that credibility can be engineered into computer applications. This dissertation evaluates the moderating variables of engagement, persuasive tools, and attunement and common ground to determine whether the credibility of financial web casts is enhanced. A sample population that understands financial reporting evaluated three alternative webcasts that used (a) streaming audio, (b) streaming audio and slides with financial content, and (c) integrated streaming audio, slides with financial content, and an interface design to enhance engagement, offer persuasive tools, and create attunement and common ground. When participants were asked what they liked most about the streaming audio webcast, the favorable response to the professional actor used in the research was the dominant theme. When participants were asked about what they liked most about the webcast that used streaming audio and slides, the favorable response to the slides with financial content was the dominant theme. The enhanced webcast with an interface design that attempted to enhance engagement, offer persuasive tools, and create attunement and common ground produced subdued favorable feedback. The enhanced webcast paced the slide presentation with the speaker and ultimately caused participants to make unfavorable comments about excessive speed and confusion. The streaming audio and slide with financial content in print form produced higher positive levels of satisfaction in graphics, usefulness, value, and trust. Within the scope of this research, it could not be determined whether selected features used in the enhanced webcast could further enhance credibility. Several areas of additional research are suggested, including designs that further enhance user control and streaming video. Over 50% of the Fortune 1000 use streaming audio webcasts, an application design that produces lower levels of usefulness, value, and trust than a webcast using streaming audio and slides with financial content. The Securities and Exchange Commission recommended financial webcasts in 2001 to enhance financial disclosure communications using asynchronous communications. Companies in the Fortune 1000 use webcasts extensively for investor relations. Additionally, this research has broad implications for webcast applications in other domains and multimedia.

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ALBUQUERQUE, ANTONIA LUCINELMA PESSOA. "A MODEL FOR STEREOSCOPIC VISUALIZATION THROUGH WEBCAMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9348@1.

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As comunicações à distância estão crescendo consideravelmente pelo uso de aplicações através da Internet e de ambientes virtuais. Interaçõoes sociais e pessoais têm recebido especial enfoque, sobretudo a videoconferência, acarretando uma grande demanda de tecnologia apropriada para esses sistemas. Resultados de pesquisas em Presença, alguns deles obtidos nesta tese, permitiram inferir os quatro pilares da proposta: 1. visualização é muito importante nas interações sociais/pessoais; 2. tecnologia simples pode promover presença social; 3. imagens de câmera são mais satisfatórias do que avatares para algumas interações sociais/pessoais; 4. estereoscopia influência presença positivamente. Sob a restrição de usar tecnologia simples e de baixo custo, a tese propõe o uso de visualização estereoscópica para webcams, em tempo real. Porque webcams são equipamentos simples com baixa resolução de imagem, a obtenção de um estéreo com qualidade torna- se um desafio. Partindo do princípio que o olho humano não se comporta da mesma forma para ver de perto e de longe, a pesquisa analisou o processamento de estéreo natural do olho humano, e com base em resultados psicofísicos e fisiológicos da visão binocular, a tese propõe um modelo para o processamento de imagens estereoscópicas a serem visualizadas em curta distância, e usa este modelo na implementação apresentada. Os resultados obtidos foram satisfatórios para a visualização de imagens estéreo com webcams, em tempo real, e principalmente, eliminaram a necessidade de reajuste de paralaxe das imagens e do reposicionamento das câmeras a cada movimentação do observador, dando assim mais liberdade de visualização ao observador.
The improvement of communication among remotely located people constitutes a very comprehensive prominent subject nowadays. Among applications to attain this goal, some aim to support social and personal interactions to meet partners, friends and family in distance. Presence research results, some obtained as part of this thesis, allowed to infer the four pillars of the proposal: 1. visualization is very important in social/personal interactions, mainly when people have close social/personal relationship; 2. simple technology can afford social presence; 3. camera images are more satisfactory than avatars during some social/personal interactions; 4. stereoscopy influences presence positively. Under the constraint of using simple technology without adding any special hardware to a PC system, the thesis proposes the use of stereoscopy through webcams, in real- time, as one solution to add 3D features to camera images. Since webcams are simple equipments with low resolution, to obtain stereo images in good quality is a challenge. Considering the fact that human eyes treat short and long distance in a different way, this research analysed the natural stereo processing of human eye, and based on psychophysical and physiological features of binocular vision, the thesis proposes a model to process stereoscopic images to be visualized in short distance, and implemented it as a proof of concept. The obtained results are satisfactory for stereoscopic images visualization through webcams, in real-time, and mainly, eliminated the need of adjusting images parallax and cameras position for each viewer´s movement, allowing more freedom to the viewer.

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Pontual, Jorge Luiz Brandão. "A internet como ferramenta para venda de veículos: o caso Vitória Webcar." reponame:Repositório Institucional do FGV, 2001. http://hdl.handle.net/10438/4027.

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Made available in DSpace on 2009-11-18T19:01:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2003
A possibilidade de interagir em tempo real com o consumidor, ao contrário dos monólogos que normalmente caracterizam os tradicionais meios de marketing, alterou drasticamente o jeito como o Customer Service pode ser oferecido, pois permite pesquisas e compras de produtos e serviços on-line, o que representa um maior conforto para o homem contemporâneo, cujo tempo é bem escasso. O mercado representa um papel central na economia de qualquer nação, facilitando a troca de informações, bens, serviços e pagamentos, além de criar valores econômicos para compradores, vendedores, intermediários e para a sociedade de modo geral. Os mercados provêem a infra-estrutura física que permite que as transações entre os compradores e os vendedores ocorram. Dessa forma, entende-se que Mercado e Negociação eletrônica são especializações dos conceitos gerais de Mercado e Negociação. O uso de meios eletrônicos e, mais especificamente, o uso da Internet como recurso para promover o comércio, tem revolucionado todas as formas de comercialização existentes, promovendo o surgimento de novos tipos de mercados eletrônicos, os mercados baseados em Internet. Com tais vantagens, os mercados eletrônicos geram novas oportunidades de negócios, proporcionam novas estratégias para se atingir o consumidor, o fornecedor e os intermediários que estejam dispostos a somar valores na integração cliente/fornecedor. Mercados eletrônicos melhoram as informações compartilhadas entre compradores e fornecedores e ajudam a reduzir o custo de logística permitindo promoções rápidas, entregas imediatas e inventários reduzidos. É a infra-estrutura da informação substituindo sistemas de distribuição física. Foi, portanto, sobre esta temática que buscou-se desenvolver todo o trabalho de pesquisa, enfocando-se um caso real: Vitória Web Car, por ser uma organização que direcionou o seu foco para a qualidade dos serviços, como base para o seu crescimento e diferenciação no mercado do varejo virtual brasileiro.
The possibility of real time interaction with customers as opposed to the monologues that normally characterize the traditional marketing practices has drastically altered the way Customer Service is offered thus enabling researchers and purchasers of products as well as other on-line services. This represents a substantial degree of comfort to contemporary man when time becomes scarcer on a daily basis. Marketing plays a central role in any nation's economy, facilitating information exchange, assets, services and payments as well as economic values for buyers, salespeople, intermediaries and society in general. Marketing provides the physical infrastructure for transactions between buyers and sales people. We can say that market and electronic negotiation are specializations of the general concepts of market and negotiation. The use of electronic devices, more specifically the use of the Internet as a toei to promote commerce, has revolutionized ali existing forms of commercialization. It has, furthermore, promoted new electronic markets - those based on the Internet. With such advantages, the electronic market generates new business opportunities, provides new strategies to reach consumers, suppliers and intermediaries who are willing to add value to the integration of the customer and supplier. The electronic market has improved qualitative information that is shared between buyers and suppliers and has helped to reduce costs in logistics. It has also permitted effective promotions, faster delivery and reduced inventories. This is due to the web infrastructure substituting physical systems of distribution. The following research was developed on this theme and is based on a factual case: Vitória Web Car, an organization which has focussed on a high quality in service as its foundation for growth and differentiation in service in the virtual Brazilian retail market.

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Barta, Attila. "WebCat-information integration for Web catalogs." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0004/MQ40740.pdf.

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Chan, Clarence. "A framework for the lightweight augmentation of webcast archives." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/5790.

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We propose a framework for augmenting archives of webcast lectures at alow benefit/cost ratio that finesses the issue of costly video post-production, while still significantly enhancing the quality of the webcast. We argue that lightweight augmentations such as alternate slide tracks, video re-orderings via timeline pointers, and simple groupings of related video and slide con tent, will allow webcast producers to not only deliver an adequately polished version of the original webcast, but also to re-use and re-purpose archived webcasts for different audiences and different perspectives on the same con tent. A prototype application for viewing these kinds of augmented webcast archives was developed, and a user study was conducted to determine the benefits of augmenting an archived webcast lecture in such a way. Our results suggest that augmentations make the webcast itself easier to navigate, and improve comprehension of material enough that selective viewing and navigation of the augmented lecture is comparable to simply watching the lecture in its entirety without augmentations.

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Berrios, Guevara Yéiner Michael. "Sistema de videovigilancia utilizando cámaras web como alternativa para mejorar el nivel de percepción de seguridad de la ciudad de Bagua Grande." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo - USAT, 2012. http://tesis.usat.edu.pe/jspui/handle/123456789/297.

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En la presente tesis se muestra el desarrollo de un sistema de videovigilancia utilizando cámaras web como una alternativa a los sistemas convencionales de este tipo. En los primeros capítulos se hace una introducción a la problemática de inseguridad, delimitando y relacionando este problema con los robos. También se introduce conceptualmente para el entendimiento de la terminología y teoría. Posteriormente se realiza una delimitación de la población, las variables e indicadores, que sirven para la contrastación en el capítulo de discusión. Para el desarrollo del sistema se utilizó la metodología Extreme Programing o también conocida como metodología XP. La cual se enfoca principalmente en el desarrollo de los requisitos y no tanto en el diseño, adicionalmente es lo suficientemente flexible para el desarrollo de aplicaciones no tan grandes como ésta. En el capítulo de discusión en el que se contrastan y verifican los resultados obtenidos con la aplicación del sistema de videovigilancia en 3 zonas de la ciudad de Bagua Grande, frente a zonas donde no se aplicó el sistema y comprobando diferencias con datos anteriores brindados por la PNP de la comisaría de Bagua Grande.

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Berrios, Guevara Yéiner Michael, and Guevara Yéiner Michael Berrios. "Sistema de videovigilancia utilizando cámaras web como alternativa para mejorar el nivel de percepción de seguridad de la ciudad de Bagua Grande." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2012. http://tesis.usat.edu.pe/handle/usat/507.

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En la presente tesis se muestra el desarrollo de un sistema de videovigilancia utilizando cámaras web como una alternativa a los sistemas convencionales de este tipo. En los primeros capítulos se hace una introducción a la problemática de inseguridad, delimitando y relacionando este problema con los robos. También se introduce conceptualmente para el entendimiento de la terminología y teoría. Posteriormente se realiza una delimitación de la población, las variables e indicadores, que sirven para la contrastación en el capítulo de discusión. Para el desarrollo del sistema se utilizó la metodología Extreme Programing o también conocida como metodología XP. La cual se enfoca principalmente en el desarrollo de los requisitos y no tanto en el diseño, adicionalmente es lo suficientemente flexible para el desarrollo de aplicaciones no tan grandes como ésta. En el capítulo de discusión en el que se contrastan y verifican los resultados obtenidos con la aplicación del sistema de videovigilancia en 3 zonas de la ciudad de Bagua Grande, frente a zonas donde no se aplicó el sistema y comprobando diferencias con datos anteriores brindados por la PNP de la comisaría de Bagua Grande.
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Toor, Kees, and Robert Jonsson. "Skapa, Publicera & Presentera : Utveckling av en befintlig Webcast- produkt genom interaktionsdesign." Thesis, Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-18765.

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I detta examensarbete beskrivs uppdrag, tillvägagångssätt och resultat för framställning av prototyper för editering av webbsända presentationer. Prototyperna består av två produktionslägen, On-Demand och Live, anpassat för en befintlig webcast- produkt. Utvecklingen har skett iterativt tillsammans med uppdragsgivaren Qbrick. För att prototyperna ska uppnå en god användbarhet har kognitiva- & heuristiska genomgångar genomförts. Funktioner och tilltänkta arbetsflöden har tagits fram efter en användarprofil utifrån resultat av genomförd förstudie. Efter kognitiva genomgångar med användbarhetsexperter beskrevs prototyperna kunna upprätthålla en god överskådlighet samt användarkontroll för användaren, men att inlärningskurvan vid användning av nya funktioner kan vara hög för förstagångsanvändare.
This thesis describes the assignment, procedures and results for the assembled and developed prototypes for editing webcast- presentations. The prototypes consist of two production modes, On-Demand and Live, adapted to an already existing webcast- product. The process has been iteratively developed together with the employer Qbrick. To achieve good usability - cognitive & heuristic walkthroughs have been conducted. Features and estimated workflows have been developed for a specific user profile from results of a pre-study. With several cognitive walkthroughs - usability experts have described elements in the prototypes to maintain a good transparency and usability for the user, however the learning curve for first-time users may be high when using new implemented functions.

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Berrios, Guevara Yeiner Michael. "Sistema de videovigilancia utilizando cámaras web como alternativa para mejorar el nivel de percepción de seguridad de la ciudad de Bagua Grande." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2012. http://hdl.handle.net/20.500.12423/507.

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En la presente tesis se muestra el desarrollo de un sistema de videovigilancia utilizando cámaras web como una alternativa a los sistemas convencionales de este tipo. En los primeros capítulos se hace una introducción a la problemática de inseguridad, delimitando y relacionando este problema con los robos. También se introduce conceptualmente para el entendimiento de la terminología y teoría. Posteriormente se realiza una delimitación de la población, las variables e indicadores, que sirven para la contrastación en el capítulo de discusión. Para el desarrollo del sistema se utilizó la metodología Extreme Programing o también conocida como metodología XP. La cual se enfoca principalmente en el desarrollo de los requisitos y no tanto en el diseño, adicionalmente es lo suficientemente flexible para el desarrollo de aplicaciones no tan grandes como ésta. En el capítulo de discusión en el que se contrastan y verifican los resultados obtenidos con la aplicación del sistema de videovigilancia en 3 zonas de la ciudad de Bagua Grande, frente a zonas donde no se aplicó el sistema y comprobando diferencias con datos anteriores brindados por la PNP de la comisaría de Bagua Grande.
Tesis

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Zhou, Yi. "Wireless camera networks for surveillance and security." Troyes, 2012. http://www.theses.fr/2012TROY0009.

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Dans le cadre de cette thèse, on propose un système décentralisé et coopératif pour la détection d'intrusion et le suivi d'objets mobiles à l'aide d'un réseau de caméras autonomes, miniatures et sans fil. Ce mode distribué présente l'avantage d'être particulièrement robuste aux attaques extérieures et à la défaillance de caméras puisqu'il est prévu que la perte de composants ne compromette pas l'efficacité du réseau dans son ensemble. La technique proposée repose sur une approche variationnelle s'accommodant des contraintes de communication en termes de débit et de puissance, tout en assurant un traitement robuste par rapport au bruit et au changement brusque de trajectoire. En plus, la communication entre 2 caméras en charge de la mise à jour de la distribution de filtrage se trouve limitée à l'envoi des paramètres d'une seule gaussienne (une moyenne et une covariance). Dans cette thèse, on propose aussi des descripteurs originaux robustes par rapport au changement de vues dans un réseau de caméras non calibrées. Ces descripteurs présentent aussi l’avantage de bénéficier d’une implémentation rapide, permettant ainsi de respecter la contrainte temps-réel lors du suivi des cibles. Dans cette thèse, on propose aussi des descripteurs originaux robustes par rapport au changement de vues dans un réseau de caméras non calibrées. Ces descripteurs présentent aussi l’avantage de bénéficier d’une implémentation rapide, permettant ainsi de respecter la contrainte temps-réel lors du suici des cibles
In this thesis, we propose a decentralized and collaborative tracking system, based on wireless autonomous camera networks. The distributed mode ensures the robustness of the surveillant system against external attacks or an actual failure of some camera nodes. In fact, the failure of some network components does not compromise the effectiveness of the global decision-making. The proposed technique relies on a variational framework, meeting the communication constraints of the camera network, while ensuring the robustness of the tracking system for a highly maneuvring target. It is worth also noting that the communication between two successive processing cameras is limited to the transmission of Gaussian statistics (a mean and a covariance matrix). In this thesis, we propose also original descriptors robust against the variation of the camera vue, in a non pre-calibrated network. These descriptors are also efficiently implemented in order to meet the real-time constraint during the collaborative tracking process

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Hylton, Kenrie. "An Experiment Using Webcam-Based Surveillance to Deter Information Systems Misuse." NSUWorks, 2012. http://nsuworks.nova.edu/gscis_etd/182.

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There have been growing concerns regarding the misuse of academic information systems such as misconduct within Web-based assessments. A number of studies have reported significant levels of deception and dishonesty within Web-based activities that are confined by a strict code of conduct. These have been noted to be facilitated through the unmonitored nature of Web-based assessments where users have the opportunity to collaborate or utilize unauthorized resources during the assessment. Studies from criminology that utilize deterrence theory have reported that video surveillance can be useful in deterring misconduct. As such, this study explored the use of Webcam based surveillance during Web-based assessments as a potential countermeasure to deter the misuse of these information systems. The primary goal of this study was to investigate the deterrent effect of Webcam based proctoring on Information Systems (IS) misuse such as misconduct during Web-based assessments. Therefore, this study involved an experiment in which the results from an experimental group and a control group were examined. Both groups took the same set of Web-based assessments, with the only distinction being that one group was monitored by a Web-based proctor while the other was not monitored. The results of this study found no statistical significant difference between the scores of each group. However, there was a statistical significant difference between each group on the time taken to complete the Web-based assessments. A post-experiment survey was also administered to help assess the level that participants admit about the perceived opportunity they had to collaborate and utilize unauthorized resources during the Web-based assessments. This further helped to determine the deterrent effect of Webcam based surveillance. The survey analysis indicated that those who were not monitored perceived to have experienced greater levels of opportunity to engage in misconduct than those who were monitored by a Web-based proctor. This study is unique in its application of deterrence theory as well as its approach to the problem as other potential technology based solutions have focused on authentication and identity verification whereas this study seeks to address the problems of misconduct that occur after authentication. As such, contributions will be made to multiple domains regarding deterrence and surveillance within specific Web-based information systems. The results of this study may also provide practical guidance to academia and relevant industry experts particularly those involved with Web-based assessments.

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Wong, S. "A fast webcam photogrammetric system to support optical imaging of brain activity." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1344106/.

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Optical topography (OT) is an emerging neuroimaging technique utilising the tight coupling between neural activity and regional cerebral blood flow to monitor relative regional changes of haemoglobin concentration. OT systems are compact, low cost, easily portable, and relatively tolerant of body movements enabling clinical diagnosis, psychological experiments and even monitoring brain activities during daily living. There is a requirement for such systems to present their output functional data in a brain model based coordinate space in order to map to the signal source with brain anatomy. However OT data are obtained from a network of OT sensing devices (optodes) placed in contact with the head surface and cannot capture structural information of the underlying brain which might otherwise be used for registration. An appropriate registration method, widely used in Electroencephalography (EEG), is the 10-20 system which utilises bony landmarks as common points to co-register locations on the scalp with a brain model to a repeatability of a few millimetres in clinical applications to an MRI set of reference points. Inheriting the low cost and portability of OT, this thesis develops and validates a novel registration approach utilising off-the-shelf webcam technology in combination with photogrammetric bundle adjustment techniques in order to reliably coordinate targets on optodes and bony landmarks within the 10:20 reference frame to an accuracy of better than 1mm. Initial research includes an assessment of the 3D coordination accuracy, precision and stability of a series of low cost webcams in order to prove their suitability for clinical applications. Results demonstrate the capability of a system based on these cameras to reliably coordinate 3D target locations to the order of 0.5mm and better. Difficulties in automated clinical target image extraction due to poor image quality are circumvented through the development of new target image detection methods. Incremental improvements in image quality from successive webcam generations, up to and including the latest HD systems, are shown to increase coordination accuracy by one order of magnitude. The result is a novel webcam photogrammetric system that is able to rapidly and consistently coordinate targets on optodes and bony landmarks to better than 1mm in OT studies and is able to take advantage of the rapid advances being made in consumer webcam technology. The system is proven in pre-clinical studies to evaluate its coordination accuracy and in simulated clinical OT studies with a head-sized phantom conducted in collaboration with Department of Medical Physics and Bioengineering. Clinical OT studies with human subjects, demonstrate the capability of the system to continuously coordinate targets on optodes and scalp and detect differential movement between optodes and scalp which would invalidate a static registration procedure.

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Thély, Nicolas. "L'image sous le régime de la surveillance." Paris 1, 2001. http://www.theses.fr/2001PA010647.

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Cette recherche se présente comme la première réflexion esthétique sur le phénomène des webcams. Elle consiste, dans un premier temps, en la constitution d'un champ théorique fondé sur l'idée d'une mise sous surveillance volontaire. Largement suivie, cette hypothèse est pourtant critiquable: elle s ' appuie trop souvent sur un imaginaire littéraire (Big Brother) et théorique (le Panopticon), et comporte de nombreux écueils comme l'exhibitionnisme et le voyeurisme. Aussi dans un second temps un renversement s'opère: la notion d'exposition permanente se substitue à celle de sur-exposition développée par Paul Virilio. Ce changement de point de vue ouvre le champ de réflexion à des notions jusqu'ici laissées pour comptes, parce que ne relevant pas de l' esthétique traditionnelle. C'est la raison pour laquelle des théoriciens et des artistes, dont le sujet n' est pas forcément en rapport avec Internet, seront préférés à d'autres dont le discours se concentre trop sur la spécificité du médium. Dans un troisième temps, il s'agit de déterminer le régime de cette image inédite qui n'est ni cinématographique ni télévisuelle, mais dans laquelle oeuvrent plusieurs logiques comme celle de l'induction, de l'anticipation, du plaisir de la répétition. Dans un dernier temps, l'exploration des rubriques annexes s' attache au " devenir second " des images de webcams. Ces rubriques rassemblent des journaux intimes illustrés et des albums photos qui, mis en lignes, participent à un désir de visibilité.

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Marostica, Suelen Jorge Felizatto. "Flush foliar na estação seca em floresta de terra firme na Amazônia central via webcam." Instituto Nacional de Pesquisas da Amazônia, 2011. http://localhost:8080/tede/handle/tede/2095.

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Submitted by Dominick Jesus (dominickdejesus@hotmail.com) on 2016-02-11T15:04:28Z No. of bitstreams: 2 Dissertação_Suelen Jorge Felizatto Marostica.pdf: 1026296 bytes, checksum: 36ee71cfff46dbaa799cf8fce9696935 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)
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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq
There is an ongoing debate about the response of Amazon forests to extreme and to normal seasonal drought. Satellite observed Amazon green-up during the 2005 drought remains controversial, with green-up attributed by some to cloud/aerosol contamination. Satellite detection of dry-season green-up in years of normal rainfall is also confounded in the southern Amazon by decreasing solar zenith angle. To address these concerns by direct assessment of changes in the forest canopy, a high-resolution (1028x720p) 3-band video camera was mounted 54 m above the forest floor on an eddy covariance tower 60 km north of Manaus. Camera aim was south, perpendicular to the solar transit, with an oblique downward view. Automatic color balance was turned off. For 134 days from the middle of the dry season to mid rainy season (23 Sept, 2010 to 03 Feb, 2011) one frame was captured every 10s. From these, a single frame was chosen per day, obtained under diffuse solar illumination near local noon with minimal variation (< +-10%) in overall reflected scene brightness. Auto-exposure of the camera compensated this minor variation. Changes in greenness and woodiness were examined using three approaches: (1) visual classification of transition types for all trees that underwent marked full-crown changes during the dry season; (2) relative green channel brightness averaged over the entire frame; and (3) unstandardized Principal Component Analysis of the entire frame to remove spatial variations in illumination (PC1) and estimate area of exposed bark (threshold of PC2). Of 13 trees that underwent full-crown transitions in the first month (dry season), 11 were experiencing some stage of leaf flush . Relative brightness of the green channel over the entire frame showed that a flush of new leaves was already taking place at the beginning of the study and continued at least into October, when leaf maturation caused changes in leaf colors, limiting the usefulness of this indicator. The area of exposed bark decreased steeply during the mid-dry season leaf flush and further suggested that leafing-out continued at a slower pace into the rainy season. Due to spectral stability of exposed bark over time, this is a more reliable indicator of leaf phenology than the leaves themselves. The results of this study contribute an understanding of what controls seasonality of vegetation greenness in Amazonia and its photosynthesis response.
Existe um debate em curso sobre a resposta das florestas na Amazônia às secas extremas e às variações sazonais normais. Observações a partir de um sensor orbital de green-up na Amazônia durante a seca de 2005 permanecem controversas, com grande parte do fenômeno atribuído a contaminações por nuvens/aerossóis. Detecção por satélite do green-up no sul da Amazônia na estação seca foi atribuída ao artefato de sazonalidade no ângulo solar. Para avaliar mais diretamente as mudanças no dossel de uma floresta de terra firme da Amazônia Central, utilizou-se uma câmera de vídeo com três bandas na faixa do visível, resolução de 1028x720 pixels, fixa 54 m acima do chão da floresta em uma torre de covariância de fluxo, 60 km ao norte de Manaus. A mira da câmera foi ao sul, perpendicular ao trânsito solar, e obliqua para baixo. Foi desligada a compensação automática de cor (color-balance). Ao longo de 134 dias entre o pico da estação seca e o meio da estação chuvosa (23-set, 2010 a 03-fev, 2011), foi capturado um frame a cada 10 s. Foi selecionado ~um frame por dia, sob iluminação solar difusa, próximo ao meio-dia local e com variação < +/-10% no brilho geral refletido. A exposição automática da câmera compensou esta variação. As mudanças em greenness e madeirosidade foram medidas usando três abordagens: (1) classificação visual de tipos de transição para todas as árvores que experimentaram mudanças na copa por inteiro, durante o pico da estação seca; (2) médio, em todo o frame, do brilho relativo do canal verde; e (3) análise de componentes principais, com dados não padronizados, sobre todo o frame, para remover variações espaciais na iluminação (PC1) e estimar a área de madeira exposta (limiar do PC2). Das treze árvores que sofreram uma transição completa da copa na estação seca, onze experimentaram algum estágio de flush foliar. O brilho relativo do canal verde mostrou que este flush de folhas novas já estava acontecendo no início do estudo e continuou pelo menos até outubro, quando a maturação das folhas causou mudanças na sua coloração, limitando o uso desse indicador. A área de madeira exposta diminuiu abruptamente durante a estação seca e continuou caindo em ritmo menor no decorrer da estação chuvosa. Este indicador foi considerado mais confiável, devido a sua estabilidade espectral. Os resultados deste estudo contribuem para o entendimento da real sazonalidade de greenness da vegetação na Amazônia e sua resposta à fotossíntese.

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Rodejohann, Christof. "bibcast." SLUB Dresden, 2016. https://slub.qucosa.de/id/qucosa%3A7613.

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Aus der Ablehnung Positives schaffen – um die beim Bibliothekskongress 2016 nicht angenommenen Beiträge dennoch in der Öffentlichkeit zu platzieren, wurde mit dem Bibcast im Vorfeld des Kongresses ein neues, erfolgreiches Forum geschaffen. Die Resonanz war positiv, der Zuspruch groß. Nächstes Jahr soll eine Fortsetzung folgen.

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Bousefsaf, Frédéric. "Mesure sans contact de l'activité cardiaque par analyse du flux vidéo issu d'une caméra numérique : extraction de paramètres physiologiques et application à l'estimation du stress." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0192/document.

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Le sujet des travaux de recherche présenté dans cette thèse de doctorat concerne la conception et le développement d’une approche basée sur le traitement du signal et des images permettant de mesurer des signaux physiologiques d’une personne située à distance du capteur. Les différents procédés proposés dans ce travail cherchent à répondre à des besoins particuliers du domaine de l’e-santé, de la télémédecine et de l’informatique affective. Les mesures sans contact de paramètres physiologiques sont utilisables dans de nombreux champs d’application, allant des services d’urgence jusqu’aux sciences du sport, où le rythme cardiaque est surveillé pendant un effort physique intense. L’approche développée est basée sur le calcul des signaux photopléthysmographiques (PPG) obtenus sur des visages humains et enregistrés par une webcam. Ces derniers sont ensuite analysés par une transformée en ondelettes continue afin d’en extraire le rythme cardiaque et la fréquence respiratoire ainsi que la variabilité cardiaque. Des opérations de traitement du signal et des images ont été développées pour améliorer la robustesse du système en le rendant moins sensible aux mouvements et aux fluctuations de l’éclairage. La fréquence respiratoire est estimée à partir de la variabilité cardiaque par le phénomène d’arythmie sinusale respiratoire, la variation naturelle de la fréquence cardiaque entrainée par la respiration. Les phénomènes de vasoconstriction et vasodilatation qui modifient les amplitudes du signal PPG sont aussi détectées par la méthode que nous proposons dans ces travaux de thèse. Les performances du système ont été évaluées à partir d’un ensemble de capteurs standards en contact sur 12 individus en bonne santé qui ont participé aux expériences. Les résultats montrent que les mesures dérivées de la webcam et des capteurs en contact sont en étroite concordance. Le second volet de ces travaux de recherche concerne la reconnaissance du stress basée sur les données physiologiques quantifiées précédemment. La webcam est ici utilisée pour mesurer et estimer l’état de tension mentale d’une personne. Les amplitudes du signal PPG et la variabilité de la fréquence cardiaque reflètent l’état du système nerveux autonome et ont été utilisées pour calculer une courbe de stress. L’activité électrodermale a concurremment été mesurée par un capteur en contact pour évaluer la méthode que nous proposons. Une application a spécifiquement été développée en laboratoire pour successivement induire du stress et relaxer les participants. Les résultats indiquent que les mesures calculées à partir des données de la webcam sont en étroite corrélation avec l’activité électrodermale. La méthode présentée dans ces travaux permet de mesurer un ensemble de données physiologiques et estimer l’état de stress d’une personne à l’aide d’une webcam, fournissant ainsi une bonne alternative aux dispositifs conventionnels en contact
Photoplethysmographic (PPG) signals obtained from a webcam are analyzed through a continuous wavelet transform to assess the instantaneous pulse rate. The measurements are performed on human faces. Robust image and signal processing are introduced to collect only pixels that contain photoplethysmographic information and to remove major artifacts and trends on raw webcam PPG signals. The interbeat intervals are computed using a standard peak detection to form the instantaneous pulse rate. In addition, the respiration is recovered using the pulse rate series by respiratory sinus arrhythmia, the natural variation in pulse rate driven by the respiration. The amplitudes of the photoplethysmographic signal, which reflect relative changes in the vascular bed due to peripheral vasoconstriction or vasodilatation, are also measured. The presented algorithms are implemented on a mid-range computer and the overall method works in real-time. The performance of the proposed pulse and breathing rates assessment method was evaluated using approved contact probes on a set of 12 healthy subjects. Results show high degrees of correlation between physiological measurements even in the presence of motion. This work provides a motion-tolerant method that remotely measures the instantaneous pulse and breathing rates. Monitoring physiological signals via non-contact means presents a greater challenge in personal health care, telemedicine and affective computing. The second part of this thesis consists in assessing mental workload changes using the parameters assessed previously, i.e. the photoplethysmographic amplitude fluctuation and the pulse rate variability. These particular signals provide an estimation of the autonomic nervous system state. In order to validate the proposed method we have recorded, concurrently to the webcam curves, electrodermal activity during an interactive game that was developed to successively stress and relax the subject. We have specifically employed a computerized and interactive version of the STROOP color word test. The results exhibit a strong correlation between the webcam and contact skin conductance level traces and offer further support for the applicability of mental stress detection by remote and low-cost means, providing an alternative to conventional contact techniques

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Johnson, Jimmy. "What is the process for producing a weekly magazine-format video Webcast intended to promote a Division II athletic program?" Instructions for remote access, 2009. http://www.kutztown.edu/library/services/remote_access.asp.

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Lucchini, Fabio Luis Picelli. "Controle do computador usando movimentos do corpo, identificados por um adesivo, capturados por uma camera de video webcam." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261476.

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Orientadores : Armando Freitas da Rocha, Fernando Antonio Campos Gomide
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
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Mestrado

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Choi, Ji Won. "The maximum time interval of time-lapse photography for monitoring construction operations." Texas A&M University, 2004. http://hdl.handle.net/1969.1/2753.

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Many construction companies today utilize webcams on their jobsites to monitor and record construction operations. Jobsite monitoring is often limited to outdoor construction operations due to lack of mobility of wired webcams. A wireless webcam may help monitor indoor construction operations with enhanced mobility. The transfer time of sending a photograph from the wireless webcam, however, is slower than that of a wired webcam. It is expected that professionals may have to analyze indoor construction operations with longer interval time-lapse photographs if they want to use a wireless webcam. This research aimed to determine the maximum time interval for time-lapse photos that enables professionals to interpret construction operations and productivity. In order to accomplish the research goal, brickwork of five different construction sites was videotaped. Various interval time-lapse photographs were generated from each video. Worker?s activity in these photographs was examined and graded. The grades in one-second interval photographs were compared with the grades of the same in longer time interval photographs. Error rates in observing longer time-lapse photographs were then obtained and analyzed to find the maximum time interval of time-lapse photography for monitoring construction operations. Research has discovered that the observation error rate increased rapidly until the 60-second interval and its increasing ratio remained constant. This finding can be used to predict a reasonable amount of error rate when observing time-lapse photographs less than 60-second interval. The observation error rate with longer than 60-second interval did not show a constant trend. Thus, the 60-second interval could be considered as the maximum time interval for professionals to interpret construction operations and productivity.

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Kaymak, Sertan. "Real-time appearance-based gaze tracking." Thesis, Queen Mary, University of London, 2015. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8949.

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Gaze tracking technology is widely used in Human Computer Interaction applications such as in interfaces for assisting people with disabilities and for driver attention monitoring. However, commercially available gaze trackers are expensive and their performance deteriorates if the user is not positioned in front of the camera and facing it. Also, head motion or being far from the device degrades their accuracy. This thesis focuses on the development of real-time time appearance based gaze tracking algorithms using low cost devices, such as a webcam or Kinect. The proposed algorithms are developed by considering accuracy, robustness to head pose variation and the ability to generalise to different persons. In order to deal with head pose variation, we propose to estimate the head pose and then compensate for the appearance change and the bias to a gaze estimator that it introduces. Head pose is estimated by a novel method that utilizes tensor-based regressors at the leaf nodes of a random forest. For a baseline gaze estimator we use an SVM-based appearance-based regressor. For compensating the appearance variation introduced by the head pose, we use a geometric model, and for compensating for the bias we use a regression function that has been trained on a training set. Our methods are evaluated on publicly available datasets.

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Zhang, Shanghang. "Deep Understanding of Urban Mobility from CityscapeWebcams." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1190.

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Deep understanding of urban mobility is of great significance for many real-world applications, such as urban traffic management and autonomous driving. This thesis develops deep learning methodologies to extract vehicle counts from streaming realtime video captured by multiple low resolution web cameras and construct maps of traffic density in a city environment; in particular, we focus on cameras installed in the Manhattan borough of NYC. The large-scale videos from these web cameras have low spatial and temporal resolution, high occlusion, large perspective, and variable environment conditions, making most existing methods to lose their efficacy. To overcome these challenges, the thesis develops several techniques: 1. a block-level regression model with a rank constraint to map the dense image feature into vehicle densities; 2. a deep multi-task learning framework based on fully convolutional neural networks to jointly learn vehicle density and vehicle count; 3. deep spatio-temporal networks for vehicle counting to incorporate temporal information of the traffic flow; and 4. multi-source domain adaptation mechanisms with adversarial learning to adapt the deep counting model to multiple cameras. To train and validate the proposed system, we have collected a largescale webcam traffic dataset CityCam that contains 60 million frames from 212 webcams installed in key intersections of NYC. Of there, 60; 000 frames have been annotated with rich information, leading to about 900; 000 annotated objects. To the best of our knowledge, it is the first and largest webcam traffic dataset with such large number of elaborate annotations. The proposed methods are integrated into the CityScapeEye system that has been extensively evaluated and compared to existing techniques on different counting tasks and datasets, with experimental results demonstrating the effectiveness and robustness of CityScapeEye.

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Breitenstein, Michael D. "Visual surveillance: dynamic behavior analysis at multiple levels." Konstanz Hartung-Gorre, 2009. http://d-nb.info/998664561/04.

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Řezníček, Radek. "Modulární kamerový přehledový systém." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-295708.

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This thesis deals with realization of modular camera system. Introductory part is focused on market research and concept of the system. Next part is dedicated to the choice of components for realization of the system. Practical part deals firstly with design of printed circuit board for supporting control unit which will be controlling peripherals like motion sensor, IR illuminator, eventually magnetic door contact and also focuses on software creation for main and supporting control unit.

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Quintal, Filipe Magno Gouveia. "Inexpensive solution for real-time video and image stitching." Master's thesis, Universidade da Madeira, 2009. http://hdl.handle.net/10400.13/79.

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Image stitching is the process of joining several images to obtain a bigger view of a scene. It is used, for example, in tourism to transmit to the viewer the sensation of being in another place. I am presenting an inexpensive solution for automatic real time video and image stitching with two web cameras as the video/image sources. The proposed solution relies on the usage of several markers in the scene as reference points for the stitching algorithm. The implemented algorithm is divided in four main steps, the marker detection, camera pose determination (in reference to the markers), video/image size and 3d transformation, and image translation. Wii remote controllers are used to support several steps in the process. The built‐in IR camera provides clean marker detection, which facilitates the camera pose determination. The only restriction in the algorithm is that markers have to be in the field of view when capturing the scene. Several tests where made to evaluate the final algorithm. The algorithm is able to perform video stitching with a frame rate between 8 and 13 fps. The joining of the two videos/images is good with minor misalignments in objects at the same depth of the marker,misalignments in the background and foreground are bigger. The capture process is simple enough so anyone can perform a stitching with a very short explanation. Although real‐time video stitching can be achieved by this affordable approach, there are few shortcomings in current version. For example, contrast inconsistency along the stitching line could be reduced by applying a color correction algorithm to every source videos. In addition, the misalignments in stitched images due to camera lens distortion could be eased by optical correction algorithm. The work was developed in Apple’s Quartz Composer, a visual programming environment. A library of extended functions was developed using Xcode tools also from Apple.
Orientador: Mon‐Chu Chen

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Otáhal, Miroslav. "Sledování pohybu očí pomocí kamery." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221349.

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The aim of this master thesis is to understand problematic of eyes movement tracking using webcam. In individual chapters there are introduced basic approaches of eyes movement tracking, based on this method we can get the position of eye pupil and identify where a person looks. The part of this work is program in Matlab, which using the method of infrared detection follow the position of eye pupil and transfer this movements to the movements on the computer screen. Using this program it was tested several volunteers and the results of detection were transferred to the visual form. As part of this program it was created template for assessment of accuracy of used method. At the end of work are discussed achieved results.

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Perestrelo, Francisco Norberto Sá. "Wow!Table: framework de visão computacional." Master's thesis, Universidade da Madeira, 2008. http://hdl.handle.net/10400.13/125.

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Cronstrand, Rasmus. "Effects of design and feedback in a motion-based game." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-120565.

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Movement-based games are becoming more frequent in everyday lives. With easier access to webcams built into laptops and web-based games, a game which utilises both concepts can become a good option for everyday gaming.This study evaluates a movement-based game written in JavaScript using phaser.io which uses a webcam for control and HTML5 technique for capture. The main questions in the study are what observations can be done and are there any problems when developing a game with webcam-based motion-detection in regards to factors like flow, feedback and positioning. This study tries to answer these questions by building upon an existing game and implementing new functions and feedback and then observing how these effect the game-play. The results of the study showed that it is important to consider good feedback and how to position oneself when playing such a game and that more testing should be done to gain further knowledge about these two. But also that many of the implementations done made the person achieve flow while playing. Further work should be beneficial also to make the game even better while keeping it easy to play.

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Vybíral, Petr. "Webové aplikace pro autentizaci uživatelů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220646.

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The thesis deals with the problems of user authentication. The first chapter analyzes the problem of authentication, its methods and its utilization. The second chapter presents the different security options for communication. The chapter describes security, communication and authentication protocols. There is the 2D barcode QR Code described at the end of the chapter. The third chapter is devoted to ASP.NET technology, its development and possibilities of utilization. Attention is focused on web form and server controls. There is an analysis of elements of cookies and possibilities of their use. The last chapter consists of a practical part, which describes the development of a web application. There is a description of the parts of application, such as the database, the Web navigation, master pages and etc. in the following chapter. The cardinal part of the chapter consists of an analysis and implementation of forms authentication, the attribute authentication and authentication with QR code. Finally, there is a description of way how to secure the communication by using a certificate.

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Balliette, Corinne. "The Use of and Readiness for Speech-Language Telepractice in Medical Settings of Rural Areas of Nevada." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1571.

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This study was developed to investigate the readiness or willingness of providers, speech language therapists (SLPs), and patients to participate in telepractice for speech-language therapy services in rural areas of Nevada. Nevada has not ranked high in healthcare for several years and was noted to have low SLP to patient ratios, especially in rural areas of Nevada. A thorough literature review identified international and national studies that have shown resistance to telepractice expressed by patients and providers, but it has also shown an increase in interest post telepractice therapy. Nevada does not have current research on readiness to participate in telepractice medical settings of rural areas of Nevada, therefore a survey was developed to ask providers and patients for their opinions about participating in telepractice. Providers were selected using an online directory search, and patient participants were chosen at the discretion of the providers. A unique survey was presented to each type of participant (provider or patient) in order to compare opinions and readiness of each participant type. Specific questions related to voice and swallowing disorders were addressed. A large sample size was not obtained, but the researcher was able to make some associations to readiness to participate in telepractice and possible factors that may or may not have affected a participant’s opinion. Age of participants, type of internet used, availability of webcam, and area of the state did not appear to have an association with the readiness to participate in telepractice. A positive response rate to engaging in telepractice of 40% was noted across patients and providers. Though the participant sample size was small, there is still some indication that telepractice could be used to address the needs of patients who need speech-language therapy services in rural areas of Nevada.

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Wu, I.-Jen, and 吳益任. "Antecedent or Moderator? Examining the Effect of Webcare in the Online Buying Service Recovery Context." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/fku33x.

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博士
義守大學
管理碩博士班
107
In the online buying marketplace, electronic word of mouth (eWOM) and reputation are crucial, especially because the influential effect of negative WOM can easily spread quickly through the Internet platform. Thus, businesses are investing a great deal in consolidating customer relationships to improve services and eliminate negative eWOM. Thus far, in the academic field, many studies have been carried out on the issue of eWOM. Scholars have proposed the concept of Webcare to analyze how businesses employ and conduct eWOM in managing their online reputation. There are few studies that empirically address the issue of Webcare in the online buying context. In practice, Webcare is one of the business strategies to which online merchants must pay attention. In this vein, following the approach of the “post-acceptance model of IS continuance”, which originated from expectation confirmation theory (ECT), this present study proposed a research model of the “post-acceptance model of service recovery continuance (repurchase)” in the research context of service recovery. Furthermore, the role and trigger timing of Webcare have been examined. According to the 407 valid samples collected from online consumers who had the experiences in service failure and recovery, the findings showed that the“post-acceptance model of IS continuance” can be applied in the context of service recovery with high explanatory power. In addition, the context of service recovery remains highly explanatory in the IS continuance model. In addition, the study confirmed the antecedent role of Webcare in the “post-acceptance model of service recovery continuance (repurchase)” and found that the Webcare should be employed in all of the online buying processes as the trigger of service recovery sequence for satisfied consumers, instead of a remedy after the service failure. Finally, implications for academics and practitioners are proposed and discussed.

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Fox, Michael. "Selbstdarstellungs-Medium Webcam? Persönlichkeitsmerkmale und Ziele von Webcam-Nutzern." Master's thesis, 2005. https://monarch.qucosa.de/id/qucosa%3A18509.

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Untersucht wurde, ob und wie Webcams auf privaten Homepages im Internet als Selbstdarstellungs-Medium genutzt werden und welchen Einfluss dabei Persönlichkeitsmerkmale und Ziele von Webcam-Nutzern ausüben. An einer internetbasierten Befragung nahmen 62 Personen teil, die über eine zufallsgesteuerte Stichprobe ermittelt wurden. In der Befragung wurden die Persönlichkeitsvariablen der Big Five und Authentizität erhoben, sowie interessierende Facetten des Narzissmus, der Selbstwertschätzung, der Selbstüberwachung sowie neun Stile der Selbstdarstellung. Darüber hinaus machten die Teilnehmer Angaben zu Webcam-Motiven, Gründe für die Installation der Webcam, Zielgruppen und Nutzungsweisen von Webcams sowie zu weiteren interessierenden webcam- und homepage-spezifischen Merkmalen. Erste Ergebnisse zeigen, das Webcams auf privaten Homepages zur authentischen Selbstdarstellung verwendet werden. Weiterhin unterscheiden sich Webcam-Besitzer nur marginal hinsichtlich der erhobenen Persönlichkeitsvariablen von Vergleichsstichproben und von Homepage-Besitzern. Dabei richten sich Webcam-Besitzer vorrangig an ein persönlich bekanntes oder nichtbekanntes Publikum und verwenden auch im realen Leben bevorzugte Selbstdarstellungsstile. Abschließend wird die Darstellung der Webcam-Nutzung in öffentlichen Medien kritisch disskutiert und Anregungen für die weitere Forschung in diesem Bereich gegeben.

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Munteanu, Cosmin. "Useful Transcriptions of Webcast Lectures." Thesis, 2009. http://hdl.handle.net/1807/17804.

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Webcasts are an emerging technology enabled by the expanding availability and capacity of the World Wide Web. This has led to an increase in the number of lectures and academic presentations being broadcast over the Internet. Ideally, repositories of such webcasts would be used in the same manner as libraries: users could search for, retrieve, or browse through textual information. However, one major obstacle prevents webcast archives from becoming the digital equivalent of traditional libraries: information is mainly transmitted and stored in spoken form. Despite voice being currently present in all webcasts, users do not benefit from it beyond simple playback. My goal has been to exploit this information-rich resource and improve webcast users' experience in browsing and searching for specific information. I achieve this by combining research in Human-Computer Interaction and Automatic Speech Recognition that would ultimately see text transcripts of lectures being integrated into webcast archives. In this dissertation, I show that the usefulness of automatically-generated transcripts of webcast lectures can be improved by speech recognition techniques specifically addressed at increasing the accuracy of webcast transcriptions, and the development of an interactive collaborative interface that facilitates users' contributions to machine-generated transcripts. I first investigate the user needs for transcription accuracy in webcast archives and show that users' performance and transcript quality perception is affected by the Word Error Rate (WER). A WER equal to or less than 25% is acceptable for use in webcast archives. As current Automatic Speech Recognition (ASR) systems can only deliver, in realistic lecture conditions, WERs of around 45-50%, I propose and evaluate a webcast system extension that engages users to collaborate in a wiki manner on editing imperfect ASR transcripts. My research on ASR focuses on reducing the WER for lectures by making use of available external knowledge sources, such as documents on the World Wide Web and lecture slides, to better model the conversational and the topic-specific styles of lectures. I show that this approach results in relative WER reductions of 11%. Further ASR improvements are proposed that combine the research on language modelling with aspects of collaborative transcript editing. Extracting information about the most frequent ASR errors from user-edited partial transcripts, and attempting to correct such errors when they occur in the remaining transcripts, can lead to an additional 10 to 18% relative reduction in lecture WER.

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CHEN, KUAN-JU, and 陳冠如. "The Legal Study of Live Webcast." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/fsncnm.

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碩士
東吳大學
法律學系
106
Webcasting comes from the rise of the media and brings about the creation and interaction of diverse content. Compared with traditional media, "Self-Media" is a network media platform that provides interaction or content for users of the platform to freely create content and deliver messages to specific or unspecified groups and individuals. Since the media has a variety of production content, social interaction, compliance with the relevant laws and regulations and platform terms of use. Webcast content can be seen in social sharing, business activities, classroom live, national conferences, and even court trials. The live webcast platform has new live broadcast functions from social media, and newcomers are mainly broadcast media. The integrated business model and application type can be roughly divided into live show, live action, live game, live broadcast, etc., and the platform creates a commercial niche from the media, generating a new business model, and the dependence between the live broadcast and the platform. In addition to how the platform provides a better niche for the live broadcaster, the revenue of the live broadcaster also depends on the user's loyalty. This paper discusses the scope of the study and precludes court live broadcasts. Explain the advantages of online media and the types and contents of webcast platforms. The United States is a big country for new technology application and development companies, especially for Facebook and Youtube, all of which are American companies. The development and response of the United States is also earlier. Therefore, when doing research and discussion, this article first explores the development of the United States and observes cross-strait development. In the near future, mainland China has discussed the issues of government regulation policy control and self-discipline of the Internet, and explored the internal development of Taiwan to consider its management differences and cultural characteristics. In addition, the main legal risks faced by the webcast platform come from the live broadcast content. The content of the live broadcast is not correct. It will not only violate administrative regulations and criminal law, but may also constitute civil tort and may also involve intellectual property protection. China's protection of freedom of speech based on the Constitution, online speech prohibits prior review to avoid the chilling effect, so no prior review is required. At present, the Internet broadcast can only be explained and applied according to the original specifications. Therefore, the NCC proposes a draft of the Digital Communication Law, which is characterized by civil liability, emphasizing that it is not subject to public power and is involved in self-discipline. In addition to the government-regulated laws, Taiwanese webcasting industry has referenced the development of the mainland China and discussed the establishment of self-discipline conventions to mainland China a harmonious network environment and reduce the occurrence of chaos. On the other side of freedom of speech, the people should also understand the meaning of being responsible for their own speeches. It is suggested that public opinion can be used to publicize the public, school policy promotion and education at all levels, and industry practitioners’ re-education of live broadcasters. mainland China self-discipline and other laws in the network environment.

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Yang, Chih-Hsin Ou, and 歐陽志信. "Study of webcam EMI design." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/43wj3w.

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碩士
國立臺北科技大學
電子電腦與通訊產業研發碩士專班
99
Webcam is one of the main peripherals in a computer system. This thesis focuses on the electromagnetic interference (EMI) prevention of a webcam to improve the robustness of the product. There are three parts for the EMI improvement. The first is dealing with image signal interface and USB2.0 process, which by adjusting the circuit impedance matching and the connector selection, can reduce the radiation caused by unmatched impedances. As a result of matched impedance, the radiation power of the high frequency signal is reduced by 2dB quasi-peak value. The second part is the implementation of multiple layers of printed circuit board (PCB), correct signal track layout on different layers can introduce shielding to the high frequency signals as well as avoiding cross talk caused insufficient spacing. Using a multiple layered PCB and suitable layer structure can reduce the EMI radiation by 5dB quasi-peak value. The last part is to adjust cable used by the webcam, due to the data rate of the cable is up to 480MHz, the cables with different shielding effect can suppress the radiation of the USB signal, and is able to improve EMI up to 6dB quasi-peak value. The component selection and PCB layout design are analyzed and discussed in this thesis. Practical and efficient solutions are proposed not only to reduce the development time but also for webcam EMI application.

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Hsu, Ya-Chun, and 許雅淳. "Gaze Estimation Using Single Webcam." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/16172561854679301393.

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碩士
國立臺灣師範大學
資訊工程學系
101
Eye-tracking systems are wildly used in cognitive psychology research problems, and recently eye-tracking technology has been considered as a potential multimedia interaction way. It can be applied to help people who suffer from disease and lost the ability of controlling their movements, so that they can manipulate computers and communicate with others. In addition, eye-tracking system can also be used to detect drivers’ fatigue. Reducing the number of accidents can not only save lives but also decrease society cost. However, commercially available eye-tracking systems usually endure with high cost and hard to fetch problems. We propose an eye movement tracking method using personal computer and single webcam. Our method modifies the Adaboost face detection algorithm to make it faster and reduce the false positive rate. We also provide a new method to calculate the center of iris quickly. Finally, we use SVM to help us categories possible gaze region and determine the final gaze region with our gaze tracking mechanism.

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Hsueh, Ming-Kai, and 薛名凱. "Facial Expression Recognition with WebCam." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/24120668987886256360.

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碩士
國立臺北科技大學
自動化科技研究所
92
It’s very easy for human being to recognize the emotion through facial expression, but it’s not so simple for computers. In this research, we use the common video device to establish the system which distinguishs people’s emotion, automatically. This system can work very well with neural network. In this paper, we are base on Ekman’s (Action Units; AUs) to catch the characteristics on the faces. First of all, it catches images on people’s faces by CMOS WebCam, and then detects the moving route of the five organs by image processing technique. Then, using those characteristics through neural network to recognize people’s emotion. Our system can recognize moving emotion within a short time, and the correction percentage can be over eighty percent. Therefore, it’s strong enough to approve the availability of our system.

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Yang, Jing-Jie, and 楊靜杰. "Automatic Facial Feature Extraction using Webcam." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/51974944620386801088.

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碩士
中原大學
資訊工程研究所
95
With the popularity of imaging/video equipments, applications of digital images/videos have become popular and accessible to end-users. Most images used for facial feature extraction and expression analysis are taken by digital camera or video camcorder. In general, most end-users don’t have access to high-end camera or camcorder, thereby limit the use of facial expression analysis in daily life. In this study, our goal was aimed to develop a novel method to detect automatically the facial features (e.g. eyebrows, eyes, …etc.) using a low-end webcam equipped on a commercially-available notebook. The method includes a face detection technique to identify potential face regions using skin-colors and a Bayes’ classifier. After normalizing the face region, facial-feature searching and labeling methods are used to identify facial feature points or locations in images. Our experimental results were tested using a face database in our laboratory, Markus Weber’s face database, and CMU AMP face database. The preliminary results showed that our methods achieved a face detection rate of 85% in the webcam database and in Markus Weber’s database, and a success rate of 87% for facial feature extraction in CMU AMP database. In summary, we have presented a novel method for extracting facial features using a low-end webcam, which is more accessible to the general public. This may allow broad applications in facial feature extraction and expression analysis, leading to improve the human-computer interaction.

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HUANG, WEI-TING, and 黃暐婷. "Viewing Behavior of Professional Baseball Games on Webcast." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/w2d862.

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碩士
國立體育大學
休閒產業經營學系
106
The professional baseball industry has been developing for 28 years. In recent years, the development of professional baseball broadcasting has gone to the Multi-channel broadcast, network platform, therefore, the purPose of study is to understand the spectator’ s behavior of Professional Baseball Games Live broadcast. The research object for the study is the audience of watching the live broadcast of Professional Baseball Game from 2017 to 2018. Data was collected on the internet by the web questionnaire of the spectator’s motivation, behavior and satisfaction of Professional Baseball Game with a total of 141 questionnaires received. Data was analyzed by Descriptive statistics, Chi-square test, ANOVA and Pearson’s correlation analysis. The findings of the study were as follows： (1) On the demographics analysis, most of the audience were male, and most of them are 21-30 years old. Most of them without experience in purchasing sports lottery, and the audience of main group were like the China Trust Brothers. (2) On the spectator’ s Behavior, most of the audience were watching the game via the webcast. They were using a mobile phone as a vehicle. Frequency is once a week, and time is weekday and holiday. (3) On the motivation construct, there were significant differences among different age, team preferences, viewing time, viewing qualifications, viewing frequency. Nevertheless, there were no significant differences among different gender, experience in buying sports lotteries, viewing vehicles. (4) On the satisfaction construct, there were significant differences among different age, team preferences, viewing qualifications, viewing frequency. Nevertheless, there were no significant differences among different gender, exPerience in buying sports lotteries, viewing time, viewing vehicles. (5) Positive relationships were found between motivation and satisfaction, entertainment of motivation and community interaction of satisfaction were only achieve low positive correlation.

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Su, Wei-Yan, and 蘇偉諺. "A Webcam-Based Mahjong Image Recognition Scheme." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/e5xxsy.

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碩士
國立臺灣科技大學
電子工程系
106
Population aging has been a worldwide problem already. In a prediction of population growth, the growth rate starts to decrease, and the aging population starts to increase each year. According to the 2017 Alzheimer’s Disease International(ADI), an elderly would get dementia on an average of 3 seconds. There is currently no cure for dementia in medical technology, but studies have found that it would be possible to prevent Alzheimer, promoting thinking ability and social activity by playing games. Since 2000, international Mahjong competition has become more and more popular. This thesis mainly proposes the method to effectively identify the scattered Mahjong tiles which being side by side at any angle on the desktop. It is expected to combine the method with artificial intelligence, make it possible for players to play with computers. It is also expected to combine the method with the Mahjong competition to analyze the players instantly.

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Chen, Kuan-Lu, and 陳冠儒. "A Smile Recognition Method for Webcam Video." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/94017154644054938265.

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碩士
南台科技大學
資訊工程系
98
The main purpose of this study is to present a method base on color model smile recognition method. First of all, the researcher transferred an image from RGB color space to YCbCr to reduce the influence which is affected by different light condition to skin color. Using the color distribution range find skin region. The skin region use ratio and size to distinguish is or isn`t human face and count mouth map to find mouth location. When the mouth is found, we use histogram approach to find the characteristics of lips. Finally, we use curve detection algorithm to detect smile. Hough transformin the relevant research is used on face boundary or edge detection. We try use the Hough transform and randomize Hough transform to smile recognition. The results is show that Hough transform accuracy.

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Zeng, Shao-Bu, and 曾少卜. "Gesture Control and Design for Using Webcam." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/64519090729281665665.

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碩士
中華科技大學
電子工程研究所碩士班
103
This thesis is discussed to gesture control for using Webcam. Mouse and keyboard operation are not the best tool on many occasions. The purpose of this thesis is to facilitate handling with gesture control simple random swing in the air to complete the operation. The first step in object tracking, now more commonly used tracking method has two ways: moving edge detection[1] and mean shift[2]. Because moving edge detection is useless when moving object stationary, so the use of mean shift algorithm is used. Object tracking methods are mainly distributed in the color space based approach. In median filtering, binarization, morphology[3] and edge detection to find the image location, and use mean shift tracking path. The path from the Hu invariant moments[4] and Jiugongge path classification, to find the path of the finger to identify operating instructions, thereby leading to finger waving in front of Webcam can control the computer output instruction. The simulation results are indicated Hu invariant moment and Jiugongge successfully classify a variety of image path. Hu invariant moments come through seven unchanged moments database for comparison with the identification, the difference between instruction and instruction are clear. Another method can be drawn through the Jiugongge of various Jiugongge instruction, it can be designed own database, and the database comparison and identification.

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CHENG, WEN-CHI, and 鄭文綺. "Users’ Continuous Viewing Intention on Webcast by Celebrity Worship." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/m5f32x.

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碩士
明新科技大學
管理研究所碩士班
106
Nowadays, Internet usage is becoming more and more diversified, such as data searching, social networking, online shopping, audio-video sharing and so on. Video can be shared through the internet and audio-visual platform. The video sharing platform not only can share recorded films, but also has webcast function. Audience can watch webcast on television, the network and mobile devices; therefore, the webcast develops very rapidly recently. This study adopted expectation confirmation theory to construct research model, and explore factors that influencing users’ continuous viewing intention and satisfaction on webcast by celebrity worship. Celebrity worship scale is applied to measure the level of celebrity worship. This study sent questionnaires via internet and 713 valid questionnaires were collected. It was found that (1) different level of celebrity worship has positive effects on expectation confirmation. (2)Webcast expectation confirmation has positive effects on satisfaction and continuous use. (3)Webcast expectation confirmation has positive effects on perceived usefulness (entertaining, interaction, social and information). (4) The entertaining function and information function of the webcast has positively direct and indirect effects on viewing satisfaction and the continuous usage of the webcast. (5) The interactive function and social function of the webcast negatively influence viewing satisfaction. The result of this study can be known that different level of celebrity worship does not cause different expectation of the webcast. Based on the research results, we give different suggestions of the four aspects- entertaining, interaction, social and information of perceived usefulness that influence the satisfaction on viewing webcast. On the entertainment aspect, webcast content can be adjusted according to the audience message to increase the number of viewers, and on the information aspect, webcast celebrity can share fitness experience, make-up brand use experience.., or some information that is not officially disclosed, thus attract increasing willingness to watch the webcast. Since the audience who watched the celebrity webcasts was mostly fans, even the interactive and social aspects of perceived usefulness have negative effects on satisfaction of the webcast, but it will not affect the continuous viewing intention. Fans wish that he/she can build parasocial interaction with celebrity, the direct interaction with the celebrity and socializing with other fans are not their primary reasons to watch the webcast. So the webcaster does not need to do too much in these two aspects. The findings of this study could be referred by webcasters, while webcasters or webcast celebrities plan /design the webcast content in the future.

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Liu, Xi-Wang, and 劉希望. "A Study on the Continuous Use of TV Live and Webcast." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/xq9683.

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碩士
萬能科技大學
資訊管理研究所在職專班
105
This paper studies the current situation and the development of the traditional live broadcast, and compares the present situation and the development of the traditional live television, and analyzes the current situation and the development of the traditional live television. In this paper, Through comparison and analysis, observe the trend of future live, and design the questionnaire for the use of live pipeline data analysis. At the end of March, 2017, a total of 150 questionnaires were sent to the managers, employees and general users of the actual live and live webcasts, and the questionnaire was sent to the questionnaire. And the effective questionnaire data were obtained by SPSS 22.0, which included statistical analysis such as reliability analysis, descriptive statistical analysis and correlation analysis. This study was awarded the following conclusions: (1) There is a significant positive correlation between the perceived ease of use and the usefulness of television broadcasts; (2) Cognitive usability of webcasting is positively correlated with the usefulness of online broadcast cognition; (3) There is a significant positive correlation between the perceived ease of use of television live and the satisfaction of TV live use; (4) There is a significant positive correlation between the perceived ease of use and the satisfaction of webcasting. (5) There is a significant positive correlation between the usefulness of TV broadcast and the satisfaction of TV live use; (6) There is a significant positive correlation between the usefulness of online broadcast cognition and the satisfaction of internet use. (7) There is a significant positive correlation between the use of TV live and the continuous use of television live;(8) There is a significant positive correlation between the use satisfaction of the live webcast and the continuous use of the webcast.This study recommends: (1) to enhance the awareness of television broadcast easy to use, cognitive usefulness, enhance the use of satisfaction; (2) to enhance the use of television broadcast satisfaction, enhance the continuous use of live television; (3) integration of network live advantage, breaking the traditional restrictions on live television.

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48

Wang, Chih-Yung, and 王智用. "Reuse the Media Data Source through Virtual Webcam Device." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/11503274583471877519.

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碩士
臺灣大學
資訊工程學研究所
98
The way of communication has been changed because of the popularity of webcam device. With the video stream provided by the webcam device, we can easily start a video calling and conferencing. There should be more applications for video and audio sharing. A WDM (Windows® Driver Model) driver is provided in this thesis, which installs a virtual webcam device on Microsoft® Windows® platform. Virtual webcam device takes advantage of the real one, such as multiple instances are available. The video stream provided by virtual webcam device is also programmable through the DirectShow® filter. For instance, a movie may be set as the video stream to the virtual webcam device. Multicast function is also implemented in the thesis. With multicast, video streams are both sent and received from network. Software that supports webcam device is getting growth and provides more applications.

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49

Kuo, Po-Ni, and 郭柏妮. "A study to vital signs measured using a webcam." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/29687635885485334153.

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碩士
中華大學
生物資訊學系碩士班
99
We have studied that the system can indeed extract accurate pulse measurements from ordinary webcam imagery. We use camera and camcorders (For example, home video, webcam, Mobile camera and video, etc.) to receive the images. You can check a person’s vital signs and provide health indicators. The concept of using a camera to detect such health information that it is a non-contact and non-invasive device, which could measure both the pulse rate、respiratory and blood-oxygen levels simultaneously. The camera-based spectral imaging PPG system is constructed to validate the feasibility of this technique. Pulse measurements can be acquired using digital camcorders/cameras with normal ambient light as the illumination source or applying multiwavelength illumination can be achieved to understand the blood perfusion change. Corresponding to the individual wavelength LED illumination, the PPG signals can be derived. The outcome explicitly reveals the imaging PPG is able to detect blood perfusion in an illuminated tissue and indicates the vascular distribution and the blood cell response to individual wavelength LED. It is a powerful tool in assessment of the multiple physiological parameters. It is an accurate, reliable, reproducible, yet simple to measure and process. This technology has significant potential for advancing personal health care and telemedicine.

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50

Lan, Bo-Feng, and 藍柏. "A Digital Guiding System- Implementation and Research Using Webcam." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/47385843217518474421.

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Abstract:

碩士
國立中正大學
電機工程研究所
93
Purpose of this thesis is to develop remote surveillance system, called Digital Guiding System, applying to the exhibition, museum and so on. The QT-2410 platform, which development of ARMZONE Technology, is implemented indoor Digital Guiding System. In addition, Central Data Server combines all showrooms of information, to construct a surveillance system prototype. Some device drivers, such as USB WLAN adaptor and USB camera, and VideoforLinux function and GUI interface are develop to support the MIZI Linux, which is operating system on QT-2410. Such as Web server, Socket server, Mysql server and JavaScript dynamic webpage are executed through Linux operating system of PC base platform, called Central Data Server. This system support two ways, through the Showroom Information Station and Mobile Data Server, access instant images from the showroom for visitor. The Digital Guiding System offers visitor to search his friend quickly and to receive the situation of flow in showroom, and to congestion avoidance in the same showroom. Moreover, the system support visitor to make CD/DVD including favorite image, giving humanize service.

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Dissertations / Theses on the topic 'Webcare'

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