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NCL+Depth: extending NCL for stereo/autostereoscopic 3D displays NCL+Depth:将NCL扩展到立体/自动立体3D显示
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526203
R. Azevedo, L. Soares
{"title":"NCL+Depth: extending NCL for stereo/autostereoscopic 3D displays","authors":"R. Azevedo, L. Soares","doi":"10.1145/2526188.2526203","DOIUrl":"https://doi.org/10.1145/2526188.2526203","url":null,"abstract":"The availability of 3D-enabled displays, both stereoscopic and autostereoscopic ones, is growing in the market. However, most of the current multimedia digital TV standard for describing interactive applications does not take advantage of these technologies. A useful and flexible way to codify 3D-video to work with both stereoscopic and autoestereoscopic displays is using video plus depth-per-pixel information. In order to improve authoring of interactive digital TV applications written in NCL (Nested Context Language), the Latin-American standard for digital TV, this paper proposes some extensions to this language to allow multimedia authors to be aware of depth information. Among the new features provided it is the control and animation of depth information for synthetic and non-synthetic media objects. As it is based on 2D+depth information, the proposed extensions will enable multimedia authors to take advantage of stereo and autostereoscopic displays, and also are compatible with previous versions of NCL players.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"67 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":"114912227","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
Reducing the complexity of NCL player implementations 降低NCL播放器实现的复杂性
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526217
Guilherme Lima, L. Soares, R. Azevedo, M. Moreno
{"title":"Reducing the complexity of NCL player implementations","authors":"Guilherme Lima, L. Soares, R. Azevedo, M. Moreno","doi":"10.1145/2526188.2526217","DOIUrl":"https://doi.org/10.1145/2526188.2526217","url":null,"abstract":"In this paper, we present an approach for reducing the complexity of NCL player implementations. This approach consists, basically, in introducing in the player's architecture an initial conversion step that removes all syntactic sugar and reuse features from the source language. The output of this step, a redundancy-free version of the original input, is then fed to the player that interprets it and creates a corresponding multimedia presentation. In particular, we propose the use of the NCL Raw profile as this intermediate language. The Raw profile is an (almost) redundancy-free profile that is compatible with the NCL 3.0 EDTV (Enhanced Digital TV) profile, a property that guarantees a seamless integration with current EDTV profile implementations. The main targets of the proposed approach are NCL players running on HTML browsers. We discuss how the solutions presented by NCL4Web, WebNCL, and Ginga Plug-in can be tuned to overcome some problems pointed their authors. The same problems arise in similar contexts for other declarative languages, e.g., SMIL, and the solutions presented here can also be extended to those systems.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"21 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":"123556585","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
An ad-hoc web of things service bus 一个特别的物联网服务总线
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526224
Sergio Gramacho, Cássio V. S. Prazeres, G. Figueiredo
{"title":"An ad-hoc web of things service bus","authors":"Sergio Gramacho, Cássio V. S. Prazeres, G. Figueiredo","doi":"10.1145/2526188.2526224","DOIUrl":"https://doi.org/10.1145/2526188.2526224","url":null,"abstract":"The Web of Things (WoT) is a new trend related to the Internet that have yet to scale to mass usage. Consumer and in-vehicle contexts can promote WoT to mass usage. For these contexts, ad-hoc operation and complexity abstraction is very important. This paper suggests the creation of an ad-hoc service bus for the WoT. The solution uses Bonjour and Link-Local technologies to provide the main needed functions for a WoT RESTFul service bus operation. A proof of concept was executed to demonstrate this proposition's viability in a ah-hoc network without any infrastructure.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"245 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":"116391725","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
Multimedia: from information source to components of transformational games 多媒体:从信息源到转型游戏的组件
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2528279
Michael G. Christel
{"title":"Multimedia: from information source to components of transformational games","authors":"Michael G. Christel","doi":"10.1145/2526188.2528279","DOIUrl":"https://doi.org/10.1145/2526188.2528279","url":null,"abstract":"This summary overviews a keynote talk that the author is giving at the WebMedia conference. Christel will discuss his journey with multimedia research over the past six years, taking him from Carnegie Mellon University's Computer Science Department into the Entertainment Technology Center (ETC). The story begins with the use of speech recognition, image processing, and language technologies to automatically process large video corpora. Such processing facilitates more efficient retrieval. As demonstrated by top scores in the international TRECVID benchmarking forum, Christel's CMU Informedia research group has experienced success in finding relevant video shots quickly from large masses of material. The emphasis is on leveraging the intelligence of a human user in the interactive retrieval loop, with lessons shared in visual analytics papers. That work drew the attention of oral historians, who amassed large quantities of video stories that were not easily accessible. The value of synchronized metadata to open up these collections for the web audience illustrates the power of multimedia processing to help organize and present cultural repositories. As the user community appreciated the layers of meaning within these often riveting stories, Christel was drawn to the power of multimedia elements in entertainment technologies, including games. Transformational games are designed to change the player in some way, such as improving health habits, changing attitudes, or providing education. The ETC provides multidisciplinary teams of graduate students with skills in visual arts, design, sound, programming, and production the opportunity to create such games in the course of a semester-long project. Christel will briefly overview this development process, and then demonstrate some of the ETC-produced games, highlighting the role of multimedia elements within them and the promise of the work to positively affect the game player.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"31 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":"133593880","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 architecture for QoS-enabled video telephony in a 3GPP 4G evolved packet core environment 在3GPP 4G演进分组核心环境中支持qos的视频电话体系结构
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526205
F. Belqasmi, H. Alipour, Malek El Ferjani, R. Glitho
{"title":"An architecture for QoS-enabled video telephony in a 3GPP 4G evolved packet core environment","authors":"F. Belqasmi, H. Alipour, Malek El Ferjani, R. Glitho","doi":"10.1145/2526188.2526205","DOIUrl":"https://doi.org/10.1145/2526188.2526205","url":null,"abstract":"Video telephony is the real time exchange of voice and video between end-users, and is the basis of a wide range of applications. Quality of service (QoS) enables a level of network performance control which makes it possible to meet specific applications and/or end-user requirements. This paper proposes an architecture for QoS-enabled video telephony in a 3GPP 4G Evolved Packet Core (EPC) environment. The architecture uses EPC as enabler to provide a refined differentiated QoS scheme that does not exist in the state of the art. The scheme allows prioritization between different sessions of the same video telephony application running in the same network. End-users can therefore use one application for different purposes (e.g. for business video calls and for private video calls) by assigning the appropriate priorities. We have built a proof of concept prototype using the Fraunhofer Fokus OpenEPC as the 3GPP 4G EPC infrastructure and have made some preliminary performance measurements. The architecture and the operational procedures are presented, along with the prototype and the performance measurements. Related work is also reviewed.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"13 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":"125575286","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
Blurring image quality assessment method based on histogram of gradient 基于梯度直方图的模糊图像质量评价方法
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526226
Sangwoo An, Jongjoo Park, J. Chong
{"title":"Blurring image quality assessment method based on histogram of gradient","authors":"Sangwoo An, Jongjoo Park, J. Chong","doi":"10.1145/2526188.2526226","DOIUrl":"https://doi.org/10.1145/2526188.2526226","url":null,"abstract":"In this paper we propose a blurring image quality assessment (IQA) based on histogram of oriented gradients (HOG). The image quality can be determined by the slope value of the HOG of the target image. The representative line of HOG is approximated by a random sample consensus set (RANSAC). Simulation results performed on the LIVE image quality assessment database show that the proposed method aligns better with how the human visual system perceives image quality than several state-of-the-art IQAs.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"20 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":"127945580","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: 5
Hybrid recommenders: incorporating metadata awareness into latent factor models 混合推荐:将元数据感知整合到潜在因素模型中
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526197
Edson B. Santos Junior, M. Manzato, R. Goularte
{"title":"Hybrid recommenders: incorporating metadata awareness into latent factor models","authors":"Edson B. Santos Junior, M. Manzato, R. Goularte","doi":"10.1145/2526188.2526197","DOIUrl":"https://doi.org/10.1145/2526188.2526197","url":null,"abstract":"This paper proposes a hybrid recommender algorithm which integrates a set of different user's inputs into a unified and generic latent factor model to improve prediction accuracy. The technique can exploit users' demographics, such as age, gender and occupation, along with implicit feedback and items' metadata. Depending on the personal information from users, the recommender selects content whose subject is semantically related to their interests. The method was evaluated in the MovieLens dataset and compared against other approaches reported in the literature. The results show the effectiveness of incorporating metadata awareness into a latent factor model.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"55 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":"115060758","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
Extracting knowledge from the web and social media for progress monitoring in public outreach and science communication 从网络和社交媒体中提取知识，以监测公共宣传和科学传播的进展
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526219
A. Scharl, D. Herring
{"title":"Extracting knowledge from the web and social media for progress monitoring in public outreach and science communication","authors":"A. Scharl, D. Herring","doi":"10.1145/2526188.2526219","DOIUrl":"https://doi.org/10.1145/2526188.2526219","url":null,"abstract":"Given the intense attention that environmental topics such as climate change attract in news and social media coverage, key questions for large science agencies such as the National Oceanic and Atmospheric Administration (NOAA) are how different stakeholders perceive the observable threats and policy options, how public media react to new scientific insights, and how journalists present climate science knowledge to the public. This paper investigates the potential of semantic technologies to address these questions. It introduces the NOAA Media Watch and presents a detailed case study how the metrics and visualizations of the webLyzard Web intelligence platform are used to track information flows across online media channels. Building upon this platform, we present a novel framework to measure the impact of science communication and public outreach campaigns -- through a combination of quantitative and visual methods that go beyond sentiment analysis and related opinion mining approaches.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"70 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":"115697208","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
A comparative analysis of algorithms for dynamic web services composition with quality of service 动态web服务组合算法与服务质量的比较分析
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526191
L. H. Nakamura, André Cunha, J. C. Estrella, M. J. Santana, R. Santana
{"title":"A comparative analysis of algorithms for dynamic web services composition with quality of service","authors":"L. H. Nakamura, André Cunha, J. C. Estrella, M. J. Santana, R. Santana","doi":"10.1145/2526188.2526191","DOIUrl":"https://doi.org/10.1145/2526188.2526191","url":null,"abstract":"In this paper three optimization algorithms were used in order to solve the problem of dynamic composition of Web services with Quality of Service (QoS). This combinatorial optimization problem arises when multiple services, which provide subfunctions for a complete function, are aggregated in an execution flow and presented to the user as a single service. This problem has been modeled in the context of two deterministic and one stochastic algorithms, aiming to determine the best flow in terms of QoS. Besides, a performance evaluation was executed considering the composition algorithms in some scenarios and comparing them in terms of response time and quality of the obtained solution. The stochastic algorithm proved to be more advantageous for these scenarios due the deadline exploitation on the search for an optimal solution, although it does not provide guarantees of optimality.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"66 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":"132525133","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: 2
LIG: an interactive video system for tablets LIG:用于平板电脑的交互式视频系统
Brazilian Symposium on Multimedia and the Web Pub Date : 2013-11-05 DOI: 10.1145/2526188.2526229
C. M. D. Morais, Guilherme Pontes Leitão, Amanda Carvalho Diniz, Marianna Cruz Teixeira, Augusto Ygor Machado, Misaki Tanaka
{"title":"LIG: an interactive video system for tablets","authors":"C. M. D. Morais, Guilherme Pontes Leitão, Amanda Carvalho Diniz, Marianna Cruz Teixeira, Augusto Ygor Machado, Misaki Tanaka","doi":"10.1145/2526188.2526229","DOIUrl":"https://doi.org/10.1145/2526188.2526229","url":null,"abstract":"The portable digital devices's market has grown in recent years. The devices' interaction possibilities have become more sophisticated with the multitouch capacitive screens. The touch used to control the narrative flow of those devices poses challenges to communicators, programmers, designers, and developers in general. Products and current concepts cannot meet all the possible and incessant demand that portable interactive media, especially tablets, cause. Thus, the main purpose of this paper is to present the development of the Interactive Language Gestures (LIG) and its playback system designed to be used in digital videos interaction in order to expand videographic hypertext narratives for tablets. The LIG system encompasses the application (AppLIG), the language for creating hypertext videos (XLIG), the audio stream transition language to keep videos uninterrupted (XSLIG), and finally, the production and assembly diagram (DLIG). The LIG system allows to store and display navigation between videos without the need for graphical interfaces.","PeriodicalId":114454,"journal":{"name":"Brazilian Symposium on Multimedia and the Web","volume":"29 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":"121625493","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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