多媒体课件中的视觉语言

该文对多媒体视觉语言含义、构成和在多媒体课件中的作用等方面做了相应的阐述,对多媒体听觉语言及交互语言和视觉语言互相配合更好地发挥多媒体课件优越性进行了探讨。     

视觉信息传达设计在多媒体课件中的应用研究

多媒体课件是实现现代化教学的一个核心要素。目前利用多媒体课件展开的教与学主要通过视觉与听觉两种途径进行,其中视觉类信息仍占主导地位。与传统教学手段相比,多媒体课件具有更加丰富的视觉表现力,进一步对多媒体课件的视觉信息传达规律的认识是保证多媒体学习效果的关键。     

基于动画教学的多媒体课件视觉艺术探讨

动画艺术虽是一个年轻的视觉艺术门类,但对动画教学的探讨却越来越多地引起人们的关注。多媒体技术的出现和发展为动画教学课件的制作提供了更丰富的视觉元素与更精彩的视觉效果。文章从视觉艺术的角度,分析了动画多媒体课件的视觉要素和视觉设计原则,从而更好地指导动画多媒体课件设计,使读者在潜移默化中认识动画教学课件中艺术与技术的共融。     

在课件制作系统中SMIL的应用研究

概括的介绍了同步多媒体集成语言SMIL,分析和设计了一个应用SMIL语言的多媒体课件制作系统,该系统具备自动生成视频和幻灯图片同步播放的课件功能。     

在课件制作系统中SMIL的应用研究

概括的介绍了同步多媒体集成语言SMIL,分析和设计了一个应用SMIL语言的多媒体课件制作系统,该系统具备自动生成视频和幻灯图片同步播放的课件功能。     

在课件制作系统中SMIL的应用研究

概括的介绍了同步多媒体集成语言SMIL,分析和设计了一个应用SMIL语言的多媒体课件制作系统,该系统具备自动生成视频和幻灯图片同步播放的课件功能.     

VBA在多媒体Powerpoint课件的应用技巧

Visual Basic for Applications(简称为VBA)是Visual Basic的一种宏语言,是一种应用程式视觉化的Basic脚本,可以拓展Powerpoint课件的复杂交互功能,通过其强大的控件工具箱和编程能力可以使PPT课件具有交互性和灵活性,开发出精美实用的多媒体交互式PPT课件辅助课堂教学,提升学科课堂教学有效性,提高学科教学质量。     

基于XML的在线多媒体课件设计与实现

简要分析了现有的课件存在的问题,提出了一种可扩展的基于XML的在线多媒体课件层次信息模型,利用XML语言定义了课件标记语言对该模型进行XML绑定,通过ASP代码成功把XML引入了课件标记文档中,并利用XSL的解析器来解析转换,实现了能在浏览器中表现的在线多媒体课件库系统.通过现有的技术可实现基于XML的在线多媒体交互教学是行之有效的,而且符合CELTS内容包装规范.从而有效地解决了多媒体课件网络化过程中出现的一些问题.     

多媒体课件的教学设计与要素把握

本文对开发、研制多媒体课件时的教学设计、程序结构设计以及制作和调试等进行了系统的探讨。同时,结合实际工作中的体会,谈谈听觉元素、视觉元素、程序设计和能够实现网络化等四点在制作多媒体课件时需要把握的要素。     

研制开发多媒体课件需要把握的要素

1.听觉元素的把握 听觉元素是构成多媒体课件语言的重要内容之一,它是多媒体课件中诉诸于人们听觉的音乐、解说、音响等的集合体。一般情况下,在制作多媒体课件时,听觉元素中的音乐和解说所占的比重相对较大,因而对音乐的把握也就显得相对重要了。一部好的多媒体课件少不了音乐设     

Multimedia Clip Generation From Documents for Browsing on Mobile Devices

Small displays on mobile handheld devices, such as personal digital assistants (PDAs) and cellular phones, are the bottlenecks for usability of most content browsing applications. Generally, conventional content such as documents and Web pages need to be modified for effective presentation on mobile devices. This paper proposes a novel visualization for documents, called multimedia thumbnails, which consists of text and image content converted into playable multimedia clips. A multimedia thumbnail utilizes visual and audio channels of small portable devices as well as both spatial and time dimensions to communicate text and image information of a single document. The proposed algorithm for generating multimedia thumbnails includes 1) a semantic document analysis step, where salient content from a source document is extracted; 2) an optimization step, where a subset of this extracted content is selected based on time, display, and application constraints; and 3) a composition step, where the selected visual and audible document content is combined into a multimedia thumbnail. Scalability of MMNails that allows generation of multimedia clips of various lengths is also described. A user study is presented that evaluates the effectiveness of the proposed multimedia thumbnail visualization.     

多媒体编著语言的设计与实现

根据基于时序逻辑和XYZ系统思想的多媒体数据描述模型,设计并实现了一种新的多媒体编著语言MAL(multimedia authoring language),该语言具有抽象描述、同步描述、逐步求精设计的描述等能力,将多媒体节目中媒体对象的建模和多媒体节目的设计过程在一个统一的框架内进行描述.以该语言实现为核心，研制了一个交互式可视多媒体编著环境.     

A multimodal alignment framework for spoken documents

We present a multimodal document alignment framework, which highlights existing alignment relationships between documents that are discussed and recorded during multimedia events such as meetings. These relationships that should help indexing the archives of these events are detected using various techniques from natural language processing and information retrieval. The main alignment strategies studied are based on thematic, quotation and reference relationships. At the analysis level, the alignment framework was applied at several levels of granularity of documents, requiring specific document segmentation techniques. Our framework that is language independent was evaluated on corpora in French and English, including meetings and scientific presentations. The satisfactory evaluation results obtained at several stages show the importance of our approach in bridging the gap between meeting documents, independently from the language and domain. They highlight also the utility of the multimodal alignment in advanced applications, e.g. multimedia document browsing, content-based / temporal-based searching, etc.     

A data model and a query languagefor multimedia documents databases

A multimedia application involves information that may be in a form of video, images, audio, text and graphics, need to be stored, retrieved and manipulated in large databases. In this paper, we propose an object-oriented database schema that supports multimedia documents and their temporal, spatial and logical structures. We present a document example and show how the schema can adress all the structures described. We also present a multimedia query specification language that can be used to describe a multimedia content portion to be retrieved from the database. The language provides means by which the user can specify the information on the media as well as the temoral and spatial relationships among these media.     

Graphical Transformation of Multimedia XML Documents

As a commonly acceptable standard for guiding Web markup documents, XML allows the Internet users to create multimedia documents of their preferred structures and share with other people. The creation of various multimedia document structures, typically as trees, implies that some kinds of conversion mechanisms are needed for people using different structures to understand each other. This paper presents a visual approach to the representation and validation of multimedia document structures specified in XML and transformation of one structure to another. The underlying theory of our approach is a context-sensitive graph grammar formalism. The paper demonstrates the conciseness and expressiveness of the graph grammar formalism. An example XML structure is provided and its graph grammar representation, validation and transformation to a multimedia representation are presented.     

A unified data model for representing multimedia, timeline, andsimulation data

This paper describes a unified data model that represents multimedia, timeline, and simulation data utilizing a single set of related data modeling constructs. A uniform model for multimedia types structures image, sound, video, and long text data in a consistent way, giving multimedia schemas and queries a degree of data independence even for these complex data types. Information that possesses an intrinsic temporal element can all be represented using a construct called a stream. Streams can be aggregated into parallel multistreams, thus providing a structure for viewing multiple sets of time-based information. The unified stream construct permits real-time measurements, numerical simulation data, and visualizations of that data to be aggregated and manipulated using the same set of operators. Prototypes based on the model have been implemented for two medical application domains: thoracic oncology and thermal ablation therapy of brain tumors. Sample schemas, queries, and screenshots from these domains are provided. Finally, a set of examples is included for an accompanying visual query language discussed in detail in another document     

A Scalable Toolkit for Designing Multimedia Authoring Environments

This paper introduces Kaomi, a scalable toolkit for designing authoring environments of multimedia documents. The underlying concept is to provide the designer of multimedia applications with a fast method to get an authoring system based on a set of synchronized views (the presentation view for displaying the document, the scenario view for showing the temporal organization of the document, ...) so that each view is the support of editing actions. Kaomi is flexible enough to support a variety of multimedia documents declarative formats. It is indeed a scalable toolkit since it provides facilities for extending and/or for modifying the resulting authoring environment. In addition, cross-platform portability is provided which allows operation in the heterogenous Internet environment. The use of Kaomi is mainly described through the design of two authoring environments: one for authoring a sub-set of the Smil standard of the W3C and the other one for Madeus, a constraint based multimedia language.