CSCW for film and TV preproduction

During preproduction, film and television companies consider visuals in deciding on cast, location, and special effects. Using telecommunications would allow these decision makers to confer at a distance, reducing travel and delays caused by shipping materials back and forth. To support preproduction, an interdisciplinary team developed a prototype computer supported cooperative work application, implemented on Telstra's experimental multimedia communications platform, and demonstrated it to major Australian film and television companies     

Advanced learning tools: From real needs to useful student support [Instrumentation Notes]

Advanced learning tools that use current technologies such as informatics, electronics, and sensors can improve the efficiency of student laboratory sessions. Based on remote teaching [1], [2] and advanced monitoring tools [3], [4], [5], these laboratories can improve student learning so much that they effectively change the laboratory teaching approach. This assisted educational activity can be extended to cover a large set of student and school needs. The main advantages of these systems are: · a large number of students can use the same equipment; · fewer tutors are needed; · scheduling student labs is much easier; · a more effective teaching activity is possible; · they allow distance learning; and · they can be adapted for students with different needs, including the visually impaired. Educational tools discussed in this column that have been developed by researchers at the DIEES department of the University of Catania [6] are a Computer Science Class Teaching Aid for the Visually Impaired, several Virtual Instruments, and online laboratory sessions for electrical and electronic measurement courses. An interactive environment has also been developed to reduce the time needed to write an accurate technical report [3]. A common word processor (PC) used for writing technical papers is connected via the network (either local or Internet) to a host computer that has an interactive set of digital instruments. The PC uses suitable routines implemented in SCPI language (Standard Command for Programmable Instruments) to allow local control of the digital instruments.     

实现影视制作网络资源共享的SGI与PC配置设计

在NFS系统原理的基础上,提出了一套SGI图像工作站与PC平台进行网络资源共享的高－低配置方案,设计了一套合理的三维动画工作流程,在不影响图像质量的前提下,缩短了工作时间,提高了三维动画的制作效率。     

The virtual design of machining centers for HSM: Towards new integrated tools

The virtual design of machining centers is a modern and well-known computer aided technique. Several modeling and simulation architectures, based on the lumped mass approach and on finite element method, are now well established and widely exploited worldwide. These solutions rapidly allow the basic setup of the kinematics of the feed drives and make possible a dynamic optimized dimensioning of all the main subsystems and structures of the machining center. This paper deals with research efforts aimed at developing an innovative and open design platform which allows the integration, in a user friendly framework, of the main procedures cited above with other design tools and facilities. An operator interface procedure and a package of input–output graphic routines, managed through a multilevel data base, are now active in this framework and interact with lumped mass and finite elements modules. According to these considerations the proposed tool allows to quickly and easily analyze alternative design solutions and makes possible to optimize the dynamic performances of the machine tool, helping the designer in the definition of the optimum machine tool characteristics before the manufacturing of the physical prototype. In order to demonstrate the potential of the proposed platform an example concerning the mass optimization of the Y axis of a gantry machining center is presented.     

先进的手持移动电视技术标准--高通MediaFLO

欧洲DVB-H和美国高通MediaFLo是当今世界上两项最主要的面向手持移动电视业务的技术标准。本文全面介绍高通MediaFLo标准,包括系统组成、特点、关键技术,以及与其它手持标准的性能比较等。最后给出了中国发展手持移动电视业务的技术和政策考虑。     

The importance of the sense of touch in virtual and real environments

What would be worse, losing your sight or your sense of touch? Although touch (more generally, somesthesis) is commonly underrated, major somesthetic loss can't be adequately compensated for by sight. It results in catastrophic impairments of hand dexterity, haptic capabilities, walking, perception of limb position, and so on. Providing users with inadequate somesthetic feedback in virtual environments might impair their performance, just as major somesthetic loss does.     

中小电视台全媒体内容生产网安全设计

介绍了中小电视台在搭建全媒体内容生产平台中,网络安全如何进行设计.通过入口安全、系统安全、出口安全这种分段式的安全设计来实现网络安全,实现生产网数据安全保护.详细介绍了全媒体生产网络入口安全设计、系统安全设计和出口安全设计,为中小电视台全媒体生产平台安全建设提出了一种全新的安全管控方式.     

Facial animation by reverse morphing on a sequence of real images: application to film and video production

Research on facial animation is as vast as the many interests and needs that can be found in the general public, television or film production. For Mac Guff Ligne, a company specialized in the fabrication of special effects and computer generated images, the needs and the constraints on such a topic are very big. Morphing is often used in facial animation, and consists in mixing several expression models. As we will discover, the advantages in using morphing are numerous, but the animation workload remains long and time-consuming. Our goal is to propose a fast and reliable animation tool that is based on the same morphing technique with which the graphic artists are familiar. Our method is to inverse the classical process of morphing, and to match a real facial animation to a 3D facial animation by automatic calculation of the weights of expression models. Firstly, we discretize the real facial animation using a number of characteristic points. Then we follow the path of each point by optic or magnetic motion capture, or through the filmed images. This tracked down animation is then decomposed, for each frame, according to a basis of characteristic expressions (joy, anger, etc.) that can be automatically taken out from the real animation during the calibration stage. It means that we express a simplified shape of the face by linear composition of a series of basic faces. Finally, we can reintroduce the results of this decomposition into a more complex facial morph which has a totally different topology and geometry. The user can thus complete and modify the resulting animation using a tool he knows well. This method, used in production at Mac Guff Ligne, proves to be a solid, effective and easy-to-use work base for facial animation.     

Adaptive and personalized multimedia content delivery for disabled users in Internet TV

This paper aims at the delivery of adaptive and personalized multimedia content in interactive Internet Protocol TeleVision (IPTV) environments, using programmable IP services through the MPEG-21 standard, also supporting the features for users with disabilities. Moreover, we propose a system that adapts to users’ preferences using profile separation, not only for individual users but also for user groups as a whole. The system takes advantage of explicit and implicit information through the users’ interaction with the IPTV environment, while the profile reflects groups of similar users, thus dropping the time needed for matching user patterns and profiles when forming a recommendation. The system works in conjunction with a simulation platform acting as an interaction interface between the IPTV architecture and the prospective viewer. Based on this, interactivity in IPTV is faced through metadata and adaptation.     

The changing generic location of crime in film: a content analysis of film synopses, 1945–1991

Is the number of films containing crime increasing? If so, for which kinds of films? Using a sample of synopses for all films released in Britain between 1945 and 1991, we identified shifts in the major film genres and their proportion of crime contents. The overall proportion of crime films and the proportion of crime content in all film genres has remained constant. This masks underlying differences, however. Content analysis revealed which genres, including those with both high and low crime content, are rising or falling in popularity. It also revealed that for some genres, the proportion of films containing crime is rising. No differences were found between British and U.S. films in terms of proportion of crime content by genre. This historical content analysis provides an overview of trends in the inclusion of crime in film. These trends offer a broader context for the interpretation of more detailed analyses of single films. We discuss implications for the audience's expectations of films.     

质量管理在广播电视系统集成工程项目中的应用

运用科学的方法,将质量管理理论应用到广播电视系统集成工程项目中去。本文以工程施工流程为线索,从建立质量保证体系,施工图纸的审定,工程队伍的组建,施工过程中的质量控制及系统工程验收这五个方面分别阐述质量管理在其中的应用。以此来强化工程管理,提高施工质量;促进各方人员协调作业,保证工期;降低返工率,减少售后服务成本。     

中央广播电视节目无线数字化覆盖工程地面数字电视发射系统

中央广播电视节目无线数字化覆盖工程地面数字电视发射系统主要包括地面数字电视广播激励器、地面数字电视广播发射机、地面数字电视广播直放站以及发射天线.本文主要介绍上述几种发射设备的具体构造以及相关技术指标的测试方法,为今后实施建设任务提供了一定的技术依据.     

"双入户"工程:发展农村有线广播电视的一个技术范式

2005年7月,我们所在的如东县在江苏省的苏中、苏北地区,率先建成有线电视示范县,总用户数达到20.8万户,有线电视入户率达到77%的高位发展基础上,适时提出:以大规模实施有线电视调频广播共缆传输工程(简称"双入户"工程)为突破,探索建立农村公共服务体系的长效机制,为实现农村广播电视的全面、协调和可持续发展提供强有力的技术支撑.     

中央广播电视节目无线数字化覆盖工程设计及工程建设推进

本文主要介绍了中央广播电视节目无线数字化覆盖工程的技术方案及工程推进策略.重点针对工程勘察方案、设计实施方案、工艺系统配置等进行了详细的阐述.     

电视台节目制作设备计算机管理系统方案比较

针对各个电视台的不同情况,提出几种制作机房的计算机管理系统构建方案,阐述各方案的组成及基本原理,详细比较各方案的优缺点。     

新时期漳州广电网络1550nm传输设计方案

介绍了漳州广电网络1 550 nm传输设计方案,包括组网方式和直调1 550 nm光发射机的选型等,阐述了双重保护的概念。就怎样选择EDFA的输出光功率发表了自己的一些看法。     

云计算技术在电视台制播云项目建设中的应用

目前云计算技术在广电行业台内网建设中的应用刚刚起步,河南电视台作为国内第一家在全台网(制播云)建设中实现"云落地"的省级电视台,在网络建设中积累了一定的云计算技术应用的实战经验。本文以河南电视台全台网中云计算技术应用较多、业务较复杂的备播系统为例,详细阐述并分析了在系统搭建中云计算技术的应用,以及其中的关键性技术和问题。与广大读者和同行们一起分享云计算技术应用的实战经验,共同探讨在电视台系统建设中如何更好的运用云计算技术。     

The role of affordance in the experience of virtual reality learning: Technological and affective affordances in virtual reality

As virtual reality becomes more and more mainstream, the role of affordances in virtual environments becomes an important question. The goal of this study is to explicate users’ motivational affordances and examine how they influence the acceptance of a virtual reality learning environment (VLE). It examines how motivational affordances in an educational virtual reality (VR) system affect user experience to track and achieve goals for users. A multimixed approach was used by combining qualitative methods and a quantitative survey. First, a critical incident technique was used to explore a range of affordance factors related to VLE. Second, based on the affordance factors identified from the qualitative methods, a survey was conducted to examine the effects of affordance on user cognitive processes and the influence of affordance on the learning process. The results of the user model confirmed the heuristic role of presence and immersion affordance regarding their underlying link to educational affordances, such as empathy and embodied cognition. The findings imply the embodied cognition process of VLE in which technological qualities are shaped by users’ perception and context. The results establish a foundation for VR technologies through a heuristic assessment tool from a user-embodied cognitive process. They confirm the validity and utility of applying affordances to the design of VR as a useful concept and prove that the optimum mix of affordances is crucial to the success of VR design.     

The Dartmouth concept: learning in the real world

In an innovative program Dartmouth engineering students are sent to Jersey City, where they spend a term divided between teaching and performing an engineering task within the city administration. They help to coach inner-city high school seniors in the material of the ``Man-Made World,' and teach them the computer language, Basic, together with hands-on operation of a terminal connected to a time-sharing computer system. They also evaluate and help to develop methods for improving the operations of municipal offices and functions that come under the control of the Jersey City government. The program is designed to give the student a foretaste of the challenges he will face as an engineer once he leaves the cloistered halls of learning for the real world.