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Facial Modeling for Interactive 3D Reconstruction in Web Applications 面向Web应用中交互式3D重建的面部建模
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664580
J. P. Silva, G. C. Costa, João Melo, Iann Vicari Mascarenhas, C. Kurashima
{"title":"Facial Modeling for Interactive 3D Reconstruction in Web Applications","authors":"J. P. Silva, G. C. Costa, João Melo, Iann Vicari Mascarenhas, C. Kurashima","doi":"10.1145/2664551.2664580","DOIUrl":"https://doi.org/10.1145/2664551.2664580","url":null,"abstract":"A recent kind of Web application incorporates three-dimensional image content, which allows interactivity and new visual experiences to the users. However, rendering 3D video content has been a research challenge due to modeling complexity and visual content definition. This paper proposes an interactive Web application that shows 3D modeled human faces that were captured by depth cameras, and using HTML5 and JavaScript resources for 3D reconstruction and interactivity. The 3D modeling process is realized with a triangulation algorithm called Convex Hull. We propose a method that divides the model into four parts in order to achieve improvements on visual details around the concave areas. The final model mesh is saved into an XML file, which is readable by any Web browser. The implemented viewer resulted in image visual enhancements, simple synchronized integration of video and audio content, and friendly interactivity capabilities.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130629905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Generating Recommendations Based on Robust Term Extraction from Users' Reviews 基于用户评论的鲁棒术语提取生成推荐
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664583
R. M. D'Addio, M. Conrado, S. O. Rezende, M. Manzato
{"title":"Generating Recommendations Based on Robust Term Extraction from Users' Reviews","authors":"R. M. D'Addio, M. Conrado, S. O. Rezende, M. Manzato","doi":"10.1145/2664551.2664583","DOIUrl":"https://doi.org/10.1145/2664551.2664583","url":null,"abstract":"In this paper, we propose a technique to automatically describe items based on users' reviews in order to be used by recommender systems. For that, we extract items' features using a robust term extraction method that applies transductive semi-supervised learning to automatically identify aspects that represent the different subjects of the reviews. Then, we apply sentiment analysis in a sentence level to indicate the polarities, yielding a consensus of users regarding the features of items. Our approach is evaluated using a collaborative filtering method, and comparisons using structured metadata as baselines show promising results.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134080435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
WebMedia XX: Who We Are And What We Have Done In The Last Two Decades WebMedia XX:我们是谁，我们在过去二十年做了什么
Brazilian Symposium on Multimedia and the Web Pub Date : 2014-11-18 DOI: 10.1145/2664551.2664576
Alexandre Duarte, Moacir L. de M. Júnior, Jansen Souza, A. Brito, Fernando A. M. Trinta, Ricardo Viana
{"title":"WebMedia XX: Who We Are And What We Have Done In The Last Two Decades","authors":"Alexandre Duarte, Moacir L. de M. Júnior, Jansen Souza, A. Brito, Fernando A. M. Trinta, Ricardo Viana","doi":"10.1145/2664551.2664576","DOIUrl":"https://doi.org/10.1145/2664551.2664576","url":null,"abstract":"In this paper we analyze the scientific articles published in 18 previous WebMedia editions, from 1995 to 2012, in order to provide a bird's eye view over the Brazilian Multimedia Community and to show how the research topics addressed in the WebMedia series of events have evolved over the time. We used Social Network Analysis techniques to identify research groups, clusters and topics on papers presented in the WebMedia events over the last two decades. The results showed that WebMedia has a multidisciplinary nature with a connected component of core authors that is evolving to include an increasing number of new authors every year, showing that the community is still evolving.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"46-47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121240830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Enhancing collaborative sketching activities with context-aware adaptation guidelines 通过上下文感知适应指导方针加强协作素描活动
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526220
V. Motti, U. Sangiorgi, J. Vanderdonckt
{"title":"Enhancing collaborative sketching activities with context-aware adaptation guidelines","authors":"V. Motti, U. Sangiorgi, J. Vanderdonckt","doi":"10.1145/2526188.2526220","DOIUrl":"https://doi.org/10.1145/2526188.2526220","url":null,"abstract":"Designing interactive systems for multiple contexts of use becomes a burden when the end user interaction takes place in distinct scenarios whose specific characteristics and constraints vary and must be carefully considered. Stakeholders face then two main challenges: they are not aware of what among several context information is significantly relevant to consider, or how to appropriately adapt the user interfaces according to the information considered. Furthermore, stakeholders cannot simply rely on existing UI editors once they usually do not provide enough support for adaptation. Thus, adaptation is often ignored, resulting in user interfaces that are only suitable for static and conventional contexts of use. To support the design of user interfaces that are properly adapted to their target context, this paper proposes a novel methodology to enhance sketching activities by proposing to the end user context-aware adaptation guidelines. This work aims at raising awareness about context-aware adaptation since the early stages of the UI design.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126631397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Risk analysis of electronic transactions in tourism web applications 旅游网络应用中电子交易的风险分析
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526225
Ruhan Bidart, L. M. Silveira, A. Pereira, Adriano Veloso
{"title":"Risk analysis of electronic transactions in tourism web applications","authors":"Ruhan Bidart, L. M. Silveira, A. Pereira, Adriano Veloso","doi":"10.1145/2526188.2526225","DOIUrl":"https://doi.org/10.1145/2526188.2526225","url":null,"abstract":"Recently it has been observed a world wide increase of online sales, mainly due to agility to buy and attractive prices that are offered on the Web. However, fraud has also been increased on the same rate or more. In order to address this problem it is very important to understand the characteristics of fraudsters and their typical behavior. On the tourism e-market it is not different, thus millions of frauds occur each year. In this work we analyze a representative amount (thousands) of online transactions of a tourism Web system. We try to understand the characteristics of fraudsters with the main goal to support decision of e-payment evaluation of transactions. Our results are promising, achieving up to 64% of increase in accuracy in comparison to the baseline.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115526212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mobile development using web technologies focusing on games 使用网页技术开发手机游戏
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2528541
André Santanchè, Renoir Boulanger, Gabriela Viana, Ricardo Panaggio, B. Melo, Hugo Aboud
{"title":"Mobile development using web technologies focusing on games","authors":"André Santanchè, Renoir Boulanger, Gabriela Viana, Ricardo Panaggio, B. Melo, Hugo Aboud","doi":"10.1145/2526188.2528541","DOIUrl":"https://doi.org/10.1145/2526188.2528541","url":null,"abstract":"Games are typically challenging applications to develop and they are omnipresent in the mobile platforms. Besides the hardware limitations and heterogeneity of mobiles, we are experiencing a \"software platform epoch\". Platforms like iOS, Android and Windows Phone offer to developers complete hermetic environments, which come with compatibility side effects, constraining applications to be reimplemented in order to address each platform. One of the most promising approaches to face this platform battle is based on the combination of Web technologies -- HTML5, CSS3 and JavaScript -- to produce platform-independent applications for mobiles. The question here is how to achieve the balance between independence and performance, required by games. This mini-course gives an overview of this scenario focusing in aspects addressed to game development.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116069978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Accessibility of web and multimedia content: techniques and examples from the educational context 网络和多媒体内容的可访问性:来自教育背景的技术和例子
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2528538
A. P. Freire, R. W. Bettio, Elaine G. Frade, Fernanda B. Ferrari, José Monserrat Neto, Helena Libardi
{"title":"Accessibility of web and multimedia content: techniques and examples from the educational context","authors":"A. P. Freire, R. W. Bettio, Elaine G. Frade, Fernanda B. Ferrari, José Monserrat Neto, Helena Libardi","doi":"10.1145/2526188.2528538","DOIUrl":"https://doi.org/10.1145/2526188.2528538","url":null,"abstract":"Developing accessible Websites is essential to enable disabled people to have access to content and day-to-day services. As stated by Tim Berners-Lee, the inventor of the Web, \"access to the Web by everyone regardless of disability is an essential aspect\". This paper presents a summary of a short course on techniques to help design more accessible Web and multimedia content for people with different types of disabilities, presented at the 19th Brazilian Symposium on Multimedia and The Web. The course included examples from educational contexts, including issues with text, images, audio, video, structural elements and navigation, discussing how different accessibility issues may affect users with different types of disabilities.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128493374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Touch the air: an event-driven framework for interactive environments 触摸空气:用于交互环境的事件驱动框架
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526216
Almerindo N. Rehem Neto, Celso A. S. Santos, L. D. Carvalho
{"title":"Touch the air: an event-driven framework for interactive environments","authors":"Almerindo N. Rehem Neto, Celso A. S. Santos, L. D. Carvalho","doi":"10.1145/2526188.2526216","DOIUrl":"https://doi.org/10.1145/2526188.2526216","url":null,"abstract":"Since the advent of Kinect, there has been an outbreak of applications that go beyond mouse and keyboard interfaces. Applications developers aim to enrich and re-imagine these interfaces using gesture and voice commands recognition for controlling some virtual and real world objects using a natural interaction mechanism. Aligned to this, there are problems to set a standard for these interfaces, plus a huge effort in performing simple tasks such as connecting sensors, processing data, recognizing gestures and running actions in real or virtual world. This paper proposes an extendable event-driven framework that improves the life cycle of designing and building interactive environments, making it possible to interact with both real and virtual environments.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129085429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Modeling digital interactive TV users behavior 数字互动电视用户行为建模
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526231
Samuel C. A. Basílio, M. Moreno, E. Barrére
{"title":"Modeling digital interactive TV users behavior","authors":"Samuel C. A. Basílio, M. Moreno, E. Barrére","doi":"10.1145/2526188.2526231","DOIUrl":"https://doi.org/10.1145/2526188.2526231","url":null,"abstract":"System performance appraisal needed at the development of new large scale distributed systems are faced with the challenge of correct estimated load that is imposed on them. When dealing with Digital Tv, including terrestrial, cable, satellite and IPTV obtaining such load characterization from real deployment scenarios has proved very difficult, due to the impediment of experimental access to these operational broadcast networks. Thus, the researcher usually uses simulations that impose grossly approximate workloads, oversized or fictitious to his system, bringing uncertainty to potential service providers as to optimized design of the necessary equipment. We present at this paper a mathematical model of simple implementation, able to represent the behavior of users of Digital TV. The model can be parameterized to represent different behavior states of the simulated system and thus adapt to various interest scenarios.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129166093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An alternative to align interactive interfaces construction and return channel usage 对齐交互界面构造和返回通道使用的替代方法
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526241
Giuseppe Lima, Claudiana Batista, Felipe Oliveira, Ighor Barros, Marcelo Fernandes
{"title":"An alternative to align interactive interfaces construction and return channel usage","authors":"Giuseppe Lima, Claudiana Batista, Felipe Oliveira, Ighor Barros, Marcelo Fernandes","doi":"10.1145/2526188.2526241","DOIUrl":"https://doi.org/10.1145/2526188.2526241","url":null,"abstract":"It is recommendable that Interactive Digital TV application development should be oriented by user interface structure and interaction design. Better interactivity experiences can be obtained with the return channel usage, contributing to the offering of more convergent applications and addressing their integration to remote businesses logics and services. Many solutions enable construction of interactive applications with textual/visual programming support, but a few of them considers the disposal between the services operated over a return channel, the underlying data and the application widgets. Usually, these solutions require the direct manipulation of intermediary models whose their structures and notations demand an additional learning effort and, in some cases, they only focus on the achievement of a specific domain application template, instead of the final application instance itself. An alternative for application authoring will be presented aiming to abstract both the visual programming interface structure domain and its behavior/responsiveness when it requires the usage of the return channel based on services over IP and meeting the expectances for agility and quality in digital interactive television conception.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"244 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132091555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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