面向移动终端的富媒体技术研究
发布时间：2018-12-18 17:42
【摘要】：富媒体有别于传统媒体,它将文本、图形、图片、动画、音视频等多种媒体对象在时间和空间上进行有机结合,提供丰富的表现形式和交互能力。其主要特征是可基于时间或用户交互产生动态行为。移动富媒体技术是针对移动终端发展起来的富媒体技术,它的适用范围很广,包括移动交互式电视,广告,电子杂志等各种交互式服务。一方面,发展移动富媒体应用的需求日益迫切,另一方面,移动终端资源受限的特点将成为移动富媒体应用发展难点,本文主要研究面向移动终端的富媒体技术,主要内容和贡献点包括: 1.通过分析具有代表性的国外移动富媒体技术LASeR、DIMS、FlashLite、OMA-RME等,提出了自主的移动富媒体标准u-RMS,该标准分为3个层次,解决了富媒体内容的展现、更新及传输在标准层面上的定义。其中展现采用SVG Tiny1.2、SMIL、DOM Event等标准作为基础,结合对移动终端应用的理解进行了扩展;在场景更新方面,支持局部插入、删除、替换当前场景内容的操作;在传输方面,为场景定义了场景单元的概念,用于指导场景的流化传输。 2.提出了一种适合移动终端的富媒体场景控制方法。该方法采用XML标记语言描述语法,通过定义标签以及属性来表示语义,并且利用场景树的遍历流程进行执行,解决了场景的逻辑控制、状态恢复以及终端设备本地方法调用的问题。该方法可以与场景解析使用相同的模块,并且与场景的执行过程结合紧密,具有执行效率高以及消耗资源少的特点。通过对该方法进行的仿真和分析,证明了在移动富媒体场景控制方面的优势。 3.提出移动终端上富媒体引擎优化策略。富媒体引擎是富媒体应用的运行环境,在设计的时候需要考虑运行性能和空间的问题,本文介绍了针对u-RMS标准实现的富媒体引擎,并对引擎设计的关键技术进行了探讨。主要包括场景存储策略、场景合成以及场景渲染三个方面。其中场景存储策略中研究了场景解析流程、场景元素与属性存储结构、动画元素处理方式;介绍了场景合成原理,以及通过减少遍历场景树次数来达到提高运行效率的策略;在场景渲染方面提出了局部更新策略、Grid多边形填充算法以及适用于移动终端的2次曲线Bezier拟合方式。 4.文字信息也是富媒体应用的重要组成部分,矢量文字的处理往往会成为应用性能的瓶颈,本文针对移动终端的特点,结合汉字组件技术以及矢量笔画字体提出了一种字库存储结构,该字库将汉字信息分为三个部分来存储,分别是汉字索引、汉字结构信息、汉字组件矢量数据信息,具有占用空间小,合成速度快的优点,并解决了以往汉字组件字体失真的问题。本文还针对笔画字体提出了一种轮廓化算法,该算法根据笔画线段信息只需遍历一次就可完成多边形轮廓的确定,而且算法优化了生成的多边形顶点数量,考虑了遍历过程中的异常情况,降低了渲染负担,该算法也可经过少许改动,成为通用的描边算法。 5.在富媒体传输方面,本文提出了u-RMS传输体系,定义了传输协议格式,该协议可以通过实时流的方式传输富媒体场景,同时提出了场景优先级、随机接入点及冗余传输的策略用于获得更好的传输质量,并分析了富媒体场景在广播环境中传输的可行性,分别论证了场景与更新采用相同或不同信道传输时的优劣。 6.本文结合CMMB移动多媒体广播网络及移动通信网络,利用先进的u-RMS富媒体技术,提出了移动富媒体交互电视示范系统原型,用于开发符合手机特性的富媒体互动应用。从内容层面、技术层面进一步探索三网融合新型电视业务,展现手机电视集多种媒体类型为一身的特质,力求使手机电视最终成长为受众不可或缺的独立媒体。
[Abstract]:The rich media is different from the traditional media, which organically combines various media objects, such as text, graphics, pictures, animation, audio and video, in time and space, and provides rich expression and interaction capability. The main feature is that dynamic behavior can be generated based on time or user interaction. Mobile media-rich technology is a media-rich technology developed for mobile terminals. It has a wide range of applications, including interactive services such as mobile interactive television, advertising, and electronic magazines. On the one hand, it is becoming more and more urgent to develop the mobile-rich media application. On the other hand, the resource-limited features of the mobile terminal will become the difficult point of the development of the mobile-rich media. 1. By analyzing the representative foreign mobile rich media technology, LASR, DIMS, FlashLite, OMA-RME, etc., an autonomous mobile rich media standard u-RMS is proposed, which is divided into 3 levels, which solves the presentation, updating and transmission of rich media content at the standard level. Definition. The presentation is based on standards such as SVG Tiny1. 2, SMIL, and DOM Event. In combination with the understanding of the application of mobile terminal, the operation of local insertion, deletion and replacement of current scene content is supported in the aspect of scene update; in the aspect of transmission, the scene unit is defined for the scene a concept used to guide the fluidization of the scene transmission. 2. A rich media field suitable for mobile terminals The method comprises the following steps of: describing the syntax by using an XML markup language, expressing the semantics by defining a label and an attribute, and performing execution by using the traversing process of the scene tree, and solving the logic control, state recovery of the scene and the local method of the terminal device The method can be used with the same module as the scene resolution, and is closely combined with the execution process of the scene, and has the advantages of high execution efficiency and resource consumption. Based on the simulation and analysis of the method, the control of the mobile rich media scene is proved. The advantage of the aspect. 3. To propose a rich mobile terminal The media engine optimization strategy. The rich media engine is the running environment of the rich media application. In the design, the problem of running performance and space needs to be considered. In this paper, the rich media engine implemented for the u-RMS standard is introduced, and the design of the engine is closed. The key technology is discussed. It mainly includes scene storage strategy, scene synthesis and In the three aspects of scene rendering, scene analysis flow, scene element and attribute storage structure and animation element processing method are studied in the scene storage strategy, the principle of scene synthesis is introduced, and the number of the traversing scene trees is reduced to reach the present invention. The strategy of high running efficiency; the local update strategy, the Grid polygon filling algorithm and the 2 curves Be applicable to the mobile terminal are put forward in the scene rendering The text information is also an important part of the rich media application. The processing of vector text tends to be the bottleneck of the application performance. In this paper, the characteristics of the mobile terminal, the combination of the Chinese character component technology and the vector stroke font are combined. The invention provides a word stock storage structure, which divides the Chinese character information into three parts, namely the Chinese character index, the Chinese character structure information and the Chinese character component vector data information, has the advantages of small occupied space and high synthesis speed, The problem of the font distortion of the Chinese character component is also presented in this paper. In this paper, a contour algorithm is proposed for the stroke font. The algorithm can finish the determination of the polygon contour only once, and the algorithm optimizes the number of the generated polygon vertices, and takes into account the differences in the traversal process. Normally, the rendering load is reduced, and the algorithm can also be modified with a few In the aspect of rich media transmission, the u-RMS transmission system is proposed, and the format of the transport protocol is defined. The protocol can transmit the rich media scene in a real-time stream, and the scene priority, the random access point and the redundant transmission are also proposed. The strategy is used to obtain better transmission quality, and the feasibility of the transmission of rich media scene in the broadcast environment is analyzed. Using the advanced u-RMS rich media technology, this paper presents the prototype of mobile multimedia interactive television demonstration system by using the advanced u-RMS rich media technology in combination with the CMMB mobile multimedia broadcasting network and the mobile communication network. In order to make the mobile phone electric, the new TV service of the three-network is further explored from the content level and the technical level, and the characteristics of the mobile phone TV set with a variety of media types are displayed, and the mobile phone is made to
【学位授予单位】：电子科技大学
【学位级别】：博士
【学位授予年份】：2010
【分类号】：TN929.5
本文编号：2386238
[Abstract]:The rich media is different from the traditional media, which organically combines various media objects, such as text, graphics, pictures, animation, audio and video, in time and space, and provides rich expression and interaction capability. The main feature is that dynamic behavior can be generated based on time or user interaction. Mobile media-rich technology is a media-rich technology developed for mobile terminals. It has a wide range of applications, including interactive services such as mobile interactive television, advertising, and electronic magazines. On the one hand, it is becoming more and more urgent to develop the mobile-rich media application. On the other hand, the resource-limited features of the mobile terminal will become the difficult point of the development of the mobile-rich media. 1. By analyzing the representative foreign mobile rich media technology, LASR, DIMS, FlashLite, OMA-RME, etc., an autonomous mobile rich media standard u-RMS is proposed, which is divided into 3 levels, which solves the presentation, updating and transmission of rich media content at the standard level. Definition. The presentation is based on standards such as SVG Tiny1. 2, SMIL, and DOM Event. In combination with the understanding of the application of mobile terminal, the operation of local insertion, deletion and replacement of current scene content is supported in the aspect of scene update; in the aspect of transmission, the scene unit is defined for the scene a concept used to guide the fluidization of the scene transmission. 2. A rich media field suitable for mobile terminals The method comprises the following steps of: describing the syntax by using an XML markup language, expressing the semantics by defining a label and an attribute, and performing execution by using the traversing process of the scene tree, and solving the logic control, state recovery of the scene and the local method of the terminal device The method can be used with the same module as the scene resolution, and is closely combined with the execution process of the scene, and has the advantages of high execution efficiency and resource consumption. Based on the simulation and analysis of the method, the control of the mobile rich media scene is proved. The advantage of the aspect. 3. To propose a rich mobile terminal The media engine optimization strategy. The rich media engine is the running environment of the rich media application. In the design, the problem of running performance and space needs to be considered. In this paper, the rich media engine implemented for the u-RMS standard is introduced, and the design of the engine is closed. The key technology is discussed. It mainly includes scene storage strategy, scene synthesis and In the three aspects of scene rendering, scene analysis flow, scene element and attribute storage structure and animation element processing method are studied in the scene storage strategy, the principle of scene synthesis is introduced, and the number of the traversing scene trees is reduced to reach the present invention. The strategy of high running efficiency; the local update strategy, the Grid polygon filling algorithm and the 2 curves Be applicable to the mobile terminal are put forward in the scene rendering The text information is also an important part of the rich media application. The processing of vector text tends to be the bottleneck of the application performance. In this paper, the characteristics of the mobile terminal, the combination of the Chinese character component technology and the vector stroke font are combined. The invention provides a word stock storage structure, which divides the Chinese character information into three parts, namely the Chinese character index, the Chinese character structure information and the Chinese character component vector data information, has the advantages of small occupied space and high synthesis speed, The problem of the font distortion of the Chinese character component is also presented in this paper. In this paper, a contour algorithm is proposed for the stroke font. The algorithm can finish the determination of the polygon contour only once, and the algorithm optimizes the number of the generated polygon vertices, and takes into account the differences in the traversal process. Normally, the rendering load is reduced, and the algorithm can also be modified with a few In the aspect of rich media transmission, the u-RMS transmission system is proposed, and the format of the transport protocol is defined. The protocol can transmit the rich media scene in a real-time stream, and the scene priority, the random access point and the redundant transmission are also proposed. The strategy is used to obtain better transmission quality, and the feasibility of the transmission of rich media scene in the broadcast environment is analyzed. Using the advanced u-RMS rich media technology, this paper presents the prototype of mobile multimedia interactive television demonstration system by using the advanced u-RMS rich media technology in combination with the CMMB mobile multimedia broadcasting network and the mobile communication network. In order to make the mobile phone electric, the new TV service of the three-network is further explored from the content level and the technical level, and the characteristics of the mobile phone TV set with a variety of media types are displayed, and the mobile phone is made to
【学位授予单位】：电子科技大学
【学位级别】：博士
【学位授予年份】：2010
【分类号】：TN929.5
【引证文献】
相关期刊论文 前1条
1 张丹;;富媒体技术在操作考试系统中的应用研究[J];黑龙江教育学院学报;2012年11期
相关硕士学位论文 前1条
1 李钊成;富媒体播放器在Android平台上的移植[D];云南大学;2012年
，本文编号：2386238
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