个性化视频情感内容分析:综述

个性化视频情感内容分析是近几年兴起的一个研究热点,其目的是基于视频用户的个人兴趣和爱好来向其推荐个性化的视频内容。然而,当前仍然缺乏对该研究方向的最新研究进展的综述和讨论。为解决此问题,从3个方面对该领域的研究成果进行论述,讨论了各类现有方法的优缺点、存在的问题和挑战,并对未来的研究方向提出一些思路和建议。     

VCMF: A Framework for Video Content Modeling

Current approaches to modeling the structure and semantics of video recordings restrict its reuse. This is because these approaches are either too rigidly structured or too generally structured and so do not represent the structural and semantic regularities of classes of video recordings. This paper proposes a framework which tackles the problem of reuse by supporting the definition of a wide range of models of video recordings and supporting reuse between them. Examples of the framework's use are presented and examined with respect to different kinds of reuse of video, current research, and the development of a toolset to support the framework.     

一种支持个性化Web推荐的聚类分析

提出基于关联的聚类分析方法,挖掘具有相似访问兴趣的用户访问模式,分离不相关的用户模式,并提出基于关联的聚类算法。实验证明,该算法大量减少不相关的用户访问模式,提高个性化推荐质量。为进一步研究个性化推荐技术奠定基础。     

VIMS: A Video Information Management System

Video data management is fast becoming one of the most importanttopics in multimedia databases. In this paper, we describe thedevelopment of an experimental video information management system,called VIMS, being implemented at the Hong Kong University ofScience & Technology, which employs two fundamental components—i)a Video Classification Component (VCC) for the generation of effectiveindices necessary for structuring the video data, and ii) a ConceptualClustering Mechanism (CCM) having extended object-oriented featuresand techniques. By incorporating CCM concepts and techniques togetherwith the classified features and indices generated from the VCC, theinformation management system enables users to form dynamically, among other things, video programs(or segments) from existing objects based on semantic features/indexterms. A prototype of this system has been constructed, using apersistent object storage manager (viz., EOS), on Sun4 workstations.     

Efficient Algorithms for Slot-Scheduling and Cycle-Scheduling of Video Streams on Clustered Video Servers

The granularity of scheduling video streams can be categorized as cycle-scheduling and slot-scheduling where a time cycle is further divided into time slots. To avoid resource conflict and thereby increase throughput of clustered video servers, slot-scheduling using conflict-free scheduling and especially cycle-scheduling using full-duplex scheduling and ordered scheduling are presented in the paper. Also, the analysis of the pros and cons of applying slot-scheduling and cycle-scheduling on clustered video servers are discussed.     

一种裙装个性化定制模式及系统

针对现有裙装个性化定制中消费者直接参与程度不足和缺乏专业设计指导的问题,提出了一种融合普通消费者、专业设计师和生产厂的应用模式和系统架构,可作为三者进行有关裙装设计和定制领域的信息交互、商务洽谈和交易服务的应用系统.该模式采用基于深度学习的方法对消费者的个性化需求进行分析,给出消费者的个性化需求推荐方案,同时消费者通过...     

An Annotation Engine for Supporting Video Database Population

Segmentation, video data modeling, and annotation are indispensable operations necessary for creating and populating a video database. To support such video databases, annotation data can be collected as metadata for the database and subsequently used for indexing and query evaluation. In this paper we describe the design and development of a video annotation engine, called Vane, intended to solve this problem as a domain-independent video annotation application.Using the Vane tool, the annotation of raw video data is achieved through metadata collection. This process, which is performed semi-automatically, produces tailored SGML documents whose purpose is to describe information about the video content. These documents constitute the metadatabase component of the video database. The video data model which has been developed for the metadata, is as open as possible for multiple domain-specific applications. The tool is currently in use to annotate a video archive comprised of educational and news video content.     

Semantic Based Prefetching in News-on-Demand Video Servers

In video databases, a video document has two abstractions. The high level abstraction corresponds to the view in which the contents of that video document are seen by end users, and the low level abstraction corresponds to the physical organization of that video document. Due to the huge size of continuous data, reducing I/O has become a key issue. The latter has been mostly addressed by developing appropriate buffering techniques. In addition, prefetching techniques play a major role to meet the video data requirements. In this paper, we propose a novel prefetching strategy based not only on run-time information (objects access frequencies for example) but also on knowledge about clips structures. The proposed technique merges the two views of a video document to trigger prefetching at the video server level. Simulation experiments for a News-on-Demand application performed on different request scenarios show an improvement of about 18% in the buffer hit-rate with respect, first to the available buffer size and second to the request arrival rate.     

Packet Video Broadcasting with General-Purpose Operating Systems in an Ethernet

Video transmission with general-purpose PCs poses a number of requirements that radically differ from those of high-end dedicated video servers. We analyze the scenario of an Ethernet local area network in which a number of PCs are transmitting video streams, while other TCP/IP applications are also running concurrently. Our findings show that since the operating system clock resolution cannot cope with the transmission timing requirements the following holds: if the video transmission is performed with exact timing accuracy to maintain a constant rate then CPU load grows to 100%, thus blocking the PC for other user applications; on the other hand, if transmission is performed in a bursty manner, i.e. with sleep system calls, then CPU load decreases dramatically but the increased burstiness of the video stream has a negative impact on network performance (for example, capture effect in the Ethernet). Furthermore, the impact of video transmission over the rest of TCP/IP applications running on the same network depends heavily on the packet size. We provide an integrated analysis of operating system and network parameters to achieve video broadcasting while preserving timing requirements and minimizing the impact on other applications.     

A Video Server cost/performance Estimator tool

The Video Server Estimator (VSE) is an analytical tool which allows a user to perform a cost/performance analysis of video servers with hierarchical storage. The underlying model comprises multiple systems, main memory, expanded storage, disks and a tape library. The main objective of the tool is to optimally allocate the video files to different storage media based on the system parameters and the video file request probability distribution. The cost and the size of the video server that can accommodate a customer profile are determined. Furthermore, the impact of design parameters on the cost and performance are examined through a parametric analysis.     

The Application of Video Semantics and Theme Representation in Automated Video Editing

This paper considers the automated generation of humorous video sequences from arbitrary video material. We present a simplified model of the editing process. We then outline our approach to narrativity and visual humour, discuss the problems of context and shot-order in video and consider influences on the editing process. We describe the role of themes and semantic fields in the generation of content oriented video scenes. We then present the architecture of AUTEUR, an experimental system that embodies mechanisms to interpret, manipulate and generate video. An example of a humorous video sequence generated by AUTEUR is described.     

一种新型VOD系统视频服务器的设计

本文提出了一种带有新颖的视频流分配方案的可伸缩ＶＯＤ系统视频服务器的设计方案,从系统的体系结构方面充分探讨了如何使用单个主机处理越来越多的同时发生的视频点播要求,以及如何利用视频节目的分配文件的存贮特性减少磁盘寻道行为。本文将详细讨论直流视频流泵、磁盘子系统的文件释放策略以及系统的可伸缩性。     

Design and Configuration Rationales for Digital Video Storage and Delivery Systems

Recent advances in computing technology have brought multimedia information processing to prominence. The ability to digitize, store, retrieve, process, and transport analog information in digital form has changed the dimensions of information handling. Several architectural and network configurations have been proposed for efficient and reliable digital video delivery systems. However, these proposals succeed only in addressing subsets of the whole problem. In this paper, we discuss the characteristics of video services. These include Cable Television, Pay-Per-View, and Video Repository Centers. We also discuss requirements for Video On Demand services. With respect to these video services, we analyze two important video properties: image quality and response time. We discuss and present configurations of a Digital Video Delivery System (DVDS) from three general system components - servers, clients, and connectivities. Pertinent issues in developing each component are also analyzed. We also present an architecture of a DVDS that can support the various functionalities that exist in the various video services. Lastly, we discuss data allocation strategies which impact performance of interactive video on demand (IVOD). We present preliminary results from a study using a limited form of mirroring to support high performance IVOD.     

一种改进Apriori的个性化信息推荐算法

对现有的Apriori算法进行改进,用分治策略引入哈希技术的方法完成了压缩侯选集,减少频繁扫描数据库的次数,克服了原有关联规则的数据挖掘算法生成频繁集比较大,且需要反复扫描数据库的问题。     

一种面向科研在线的个性化推荐系统

电子邮箱的推送功能对信息传播和推广有重要作用,而科研在线云平台的邮箱推送功能出现信息过载问题后却使得推送邮件可能变成垃圾邮件。为解决该问题,本文介绍了一种基于科研在线云平台的个性化推荐系统,通过推荐模型将资源进行排序,并按周选取得分最高的一部分资源通过推送邮件推荐给用户。系统运行测试表明,通过个性化推荐的动态信息更加符合用户兴趣,有助于增加科研在线团队文档库动态汇总邮件的点击率,增强用户体验。     

基于Premiere Pro CS4视频编辑

Premiere是一款优秀的非线性视频编辑处理软件,具有强大的视频和音频实时的编辑合成功能,它的操作简便直观,给我们带来的是一个动态的、多彩的视频世界,它是一个完整的视频后期制作工具,利用Premiere Pro CS4,可以轻易地捕捉数码视频（Dv）,使用各种工具来制作视频作品,无论是专业人士还是业余爱好者,都可以充分利用Premiere丰富、易用和强大的功能。Premiere通过不断的发展以及第三方厂商的支持,已成为首选的DV制作工具之一。     

并行视频服务器中的DLB策略

介绍了VoD服务的研究现状，对并行视频服务器作了分析，在此基础上提出了循环分配策略(CA)、负载最少优先策略(LLF)和排名最优策略(SBF)等3种动态负载平衡策略，并给出了SBF策略的算法及软件测试试验。     

采用视频拼图方法构建高分辨率全景视频监控系统

与普通视频监控系统只能实现单向监控不同,全景视频监控系统可以实现360°全向监控。设计并实现了一种嵌入式高分辨率全景视频监控系统KD-PVS。重点介绍了KD-PVS中多个摄像头的空间位置设计、视频图像变换与拼接算法。KD-PVS通过对多个摄像头采集的视频进行实时变换与拼接以生成全景视频。该系统可方便应用于金融系统、仓库、监狱和移动监控等多种场合,尤其适用于室内监控。     

面向工艺品个性化定制的图案构型提取与重用

针对工艺品个性化定制过程中知识重用性较低的问题,提出一种图案构型提取与 重用的方法,并以蜡染图案创新设计为例开展研究。首先,将蜡染知识按照工艺品个性化定制 的应用需求进行分类整理,建立蜡染知识库和案例库,并构建两者之间的语义关系,通过本体 语义检索,推荐出符合用户需求的蜡染案例。采用形状上下文法对蜡染图案的纹样进行提取, 结合拓扑学方法建立图案的构型规则。在构型重用过程中提出基于字符编码的改进形状文法, 用于表述纹样填充过程中形状的变换,从而完成了面向工艺品个性化定制的蜡染图案重用。开 发蜡染工艺品个性化定制系统,通过实例验证了该方法的可行性。