检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

237 篇 会议
67 篇 期刊文献
18 篇 学位论文
7 册 图书
1 篇 专利

馆藏范围

330 篇 电子文献
1 种 纸本馆藏

日期分布

学科分类号

226 篇 工学
- 174 篇 计算机科学与技术...
- 96 篇 软件工程
- 72 篇 电气工程
- 65 篇 信息与通信工程
- 8 篇 光学工程
- 8 篇 电子科学与技术（可...
- 8 篇 生物医学工程（可授...
- 7 篇 控制科学与工程
- 4 篇 仪器科学与技术
- 3 篇 材料科学与工程（可...
- 3 篇 生物工程
- 2 篇 机械工程
- 2 篇 测绘科学与技术
- 2 篇 安全科学与工程
- 1 篇 力学（可授工学、理...
52 篇 理学
- 32 篇 物理学
- 17 篇 数学
- 3 篇 生物学
- 3 篇 系统科学
- 2 篇 化学
- 1 篇 统计学（可授理学、...
52 篇 医学
- 50 篇 临床医学
- 3 篇 基础医学(可授医学...
- 3 篇 特种医学
- 2 篇 药学(可授医学、理...
30 篇 管理学
- 22 篇 图书情报与档案管...
- 8 篇 管理科学与工程(可...
10 篇 法学
- 7 篇 社会学
- 3 篇 法学
2 篇 教育学
- 2 篇 教育学
1 篇 军事学

主题

32 篇 multimedia syste...
18 篇 multimedia commu...
16 篇 bandwidth
16 篇 multimedia
15 篇 streaming media
14 篇 content based re...
10 篇 quality of servi...
9 篇 multimedia datab...
9 篇 image retrieval
9 篇 feature extracti...
8 篇 machine learning
8 篇 content manageme...
8 篇 heuristic algori...
7 篇 network servers
7 篇 algorithms
7 篇 data mining
7 篇 visualization
7 篇 image processing
7 篇 bit rate
6 篇 computer science

机构

3 篇 univ milano bico...
3 篇 university of br...
2 篇 univ miami dept ...
2 篇 lnm inst informa...
2 篇 tsinghua univ de...
2 篇 cnrs labri lab. ...
2 篇 university of ma...
2 篇 national institu...
2 篇 eindhoven univ t...
2 篇 department of ma...
2 篇 univ maryland de...
2 篇 tampere univ tec...
2 篇 tsinghua univ gr...
2 篇 univ twente nl-7...
2 篇 hilla university...
2 篇 univ sci & techn...
2 篇 university of so...
2 篇 nokia corporatio...
2 篇 labri umr cnrs 5...
2 篇 nokia networks

作者

3 篇 santini simone
3 篇 lienhart rainer
3 篇 cusano claudio
2 篇 benois-pineau je...
2 篇 sun lifeng
2 篇 moscato vincenzo
2 篇 dittmann jana
2 篇 zhang hj
2 篇 apersp.m.g.
2 篇 rouhani modjtaba
2 篇 pudlewski scott
2 篇 besnehard quenti...
2 篇 abdel-mottaleb m...
2 篇 harati ahad
2 篇 ciocca g.
2 篇 taherinia amir h...
2 篇 p. demeester
2 篇 müller henning
2 篇 schettini r.
2 篇 zeng wj

语言

324 篇 英文
4 篇 中文
1 篇 葡萄牙文
1 篇 其他

检索条件"任意字段=Multimedia Content Access: Algorithms and Systems II"

共 330 条记录，以下是261-270 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Intelligent systems for video analysis and access over the Internet

Intelligent systems for video analysis and access over the I...

引用

作者： Zhou, Wensheng University of Southern California

学位级别：Ph.D.

This dissertation presents a solution to problems arising from the demand for fast information access and for sharing in real-time multimedia transmission over the Internet. Our solution exploits software agents that are placed throughout the network environment. These hierarchical video analysis agents process multimedia streams in real time, and automatically decompose and understand the multimedia content so as to facilitate information access and sharing. multimedia content contains both the perceptual content such as color, motion, or acoustic features and the conceptual content, which is specified based on concepts or semantics that can be expressed by text descriptions. Both types of contents are embedded simultaneously in multimedia streams, and usually are complementary to each other. This dissertation adaptively analyzes both kinds of video contents by combining mixed media cues from audio, video and text. First, a high-performance module for on-line video segmentation based on scene-change detection is developed. It serves as the first step of any video stream construction and analysis. To meet the high computational demand, our proposed video scene change detection algorithms are very efficient while maintaining high accuracy and recall rates for fast on-line video analysis. Second, the perceptual features of audio and video data are analyzed in a bottom-up manner and integrated so as to discriminate among the different events in any video stream effectively. An efficient decision-tree learning algorithm is used to induce a set of if-then rules which link perceptual features with the video conceptual semantic contents. These rules not only serve as a video classifier, but also guide on-line real-time video/audio feature extraction and data redistribution. A novel knowledge-based system, where knowledge is stored as learned rules, is proposed to serve as a video semantic inference/classification engine. Third, we propose a hierarchical video categorizatio

关键词：

来源：评论

学校读者我要写书评

暂无评论

Proceedings of SPIE: Internet multimedia Management systems ii

Proceedings of SPIE: Internet Multimedia Management Systems ...

引用

Internet multimedia Management systems ii

This Volume 4519 of the conference proceedings contains 30 papers. Topics discussed include video segmentation, video content analysis and retrieval, semantics and knowledge representations, image analysis and retrieval, audio analysis and retrieval, video compression and delivery, video access and browsing, vide servers, video rate control and adaptation and video applications.

关键词： multimedia systems

来源：评论

学校读者我要写书评

暂无评论

Adaptive and multimodal approach to multimedia content analysis

Adaptive and multimodal approach to multimedia content analy...

引用

作者： Liu, Zhu Polytechnic University

学位级别：Ph.D.

The volume of multimedia data generated nowadays is exploding. To efficiently access and retrieve desired information, tools that enable automated analysis based on content are becoming indispensable. multimedia content is defined at both perceptual and conceptual levels. The former refers to the content characterized purely by intrinsic perception properties such as color, motion, or acoustic features. The latter refers to the content that is specified based on concepts or semantics such as sunset, anchors, or news headline stories. At both levels, the content is embedded in multiple forms that are usually complimentary to each other. The main objective of this thesis is to adaptively analyze the multimedia content by integrating cues from multiple modalities, including audio, video, and text, mainly in the scope of news broadcast. At the perceptual level, news broadcast data is segmented and classified into different video events such as news reporting and commercials. Audio and visual features are developed and integrated, aiming at discriminating different events effectively. Various classification mechanisms, including linear fuzzy threshold, maximum likelihood using Gaussian Mixture Model and Hidden Markov Model, Neural Network, as well as Support Vector Machine, are benchmarked. At the conceptual level, algorithms and demonstration systems for three applications are developed. In News Broadcast Browsing System, recovering and presentation of the embedded hierarchy structure of news broadcast are addressed. Important semantic objects such as hosting characters and headline news stories are adaptively extracted using the audio/visual models that are bootstrapped from on-line data. The problem of efficient search and retrieval of segmented multimedia objects based on audio is discussed in Query-by-example in Audio System. A distance metric framework is proposed to determine the difference of mixture type Probability Density Functions, and is applied in measuring

关键词：

来源：评论

学校读者我要写书评

暂无评论

Automatic movie index generation based on multimodal information

Automatic movie index generation based on multimodal informa...

引用

Conference on Internet multimedia Management systems ii

作者： Li, Y Narayanan, S Ming, W Kuo, CCJ Univ So Calif Integrated Media Syst Ctr Los Angeles CA 90089 USA

ISBN: (纸本)0819442437

A fundamental task in video analysis is to organize and index multimedia data in a meaningful manner so as to facilitate user access for tasks such as browsing and retrieval. This paper addresses the problem of automatic index generation of movie databases based on audiovisual information. In particular, given a movie we first extract key movie events including two-speaker dialog scenes, multiple-speaker dialog scenes and hybrid scenes by using the proposed window-based sweep algorithm and the K-means clustering algorithm. Following event detection, the identity of each individual speaker in a dialog scene is recognized based on a statistical maximum likelihood approach. The identification relies on the likelihood ratio calculation between the incoming speech data and Gaussian mixture models of the speakers and the background. It is evident that the event and the speaker identity information will serve as a crucial part of the movie index table. Preliminary experimental results show that, by integrating multiple media information, we can obtain robust and meaningful event detection and speaker identification results.

关键词： Data modeling Video Detection and tracking algorithms Visualization Information visualization multimedia Cameras Databases Algorithm development Feature extraction

来源：评论

学校读者我要写书评

暂无评论

Development of a web-based video management and application processing system

Development of a web-based video management and application ...

引用

Conference on Internet multimedia Management systems ii

作者： Chan, SSM Wu, Y Li, Q Zhuang, YT City Univ Hong Kong Dept Comp Sci Hong Kong Hong Kong Peoples R China

ISBN: (纸本)0819442437

How to facilitate efficient video manipulation and access in a web-based environment is becoming a popular trend for video applications. In this paper, we present a web-oriented video management and application processing system, based on our previous work on multimedia database and content-based retrieval. In particular, we extend the VideoMAP architecture with specific web-oriented mechanisms, which include: (1) Concurrency control facilities for the editing of video data among different types of users, such as Video Administrator, Video Producer, Video Editor, and Video Query Client;different users are assigned various priority levels for different operations on the database. (2) Versatile video retrieval mechanism which employes a hybrid approach by integrating a query-based (database) mechanism with content-based retrieval (CBR) functions;its specific language (CAROL/ST with CBR) supports spatiotemporal semantics of video objects, and also offers an improved mechanism to describe visual content of videos by content-based analysis method. (3) Query profiling database which records the "histories" of various clients' query activities;such profiles can be used to provide the default query template when a similar query is encountered by the same kind of users. An experimental prototype system is being developed based on the existing VideoMAP prototype system, using Java and VC++ on the PC platform.

关键词： video management and processing query-based retrieval content-based search hybrid retrieval web-based architecture

来源：评论

学校读者我要写书评

暂无评论

Feature representation and compression for content-based retrieval

Feature representation and compression for content-based ret...

引用

Conference on Visual Communications and Image Processing 2001

作者： Xie, H Ortega, A Univ So Calif Dept Elect Engn Syst Integrated Media Syst Ctr Los Angeles CA 90089 USA

ISBN: (纸本)0819439886

In semantic content-based image/video browsing and navigation systems, efficient mechanisms to represent and manage a large collection of digital images/videos are needed. Traditional keyword-based indexing describes the content of multimedia data through annotations such as text or keywords extracted manually by the user from a controlled vocabulary This textual indexing technique lacks the flexibility of satisfying various kinds of queries requested by database users and also requires huge amount of work for updating the information. Current content-based retrieval systems often extract a set of features such as color, texture, shape motion, speed, and position from the raw multimedia data automatically and store them as content descriptors. This content-based metadata differs from text-based metadata in that it supports wider varieties of queries and can be extracted automatically, thus providing a promising approach for efficient database access and management. When the raw data volume grows very large, explicitly extracting the content-information and storing it as metadata along with the images will improve querying performance since metadata requires much less storage than the raw image data and thus will be easier to manipulate. In this paper we maintain that storing metadata together with images will enable effective information management and efficient remote query. We also show, using a texture classification example, that this side information can be compressed while guaranteeing that the desired query accuracy is satisfied. We argue that the compact representation of the image contents not only reduces significantly the storage and transmission rate requirement, but also facilitates certain types of queries. algorithms are developed for optimized compression of this texture feature metadata given that tile goal is to maximize tile classification performance for a given rate budget.

关键词： metadata content-based retrieval texture classification compression bit allocation

来源：评论

学校读者我要写书评

暂无评论

An audio virtual DSP for multimedia frameworks

An audio virtual DSP for multimedia frameworks

引用

IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Zoia, G Alberti, C Ecole Polytech Fed Lausanne Integrated Syst Lab CH-1015 Lausanne Switzerland

ISBN: (纸本)0780370414

The new MPEG-4 Audio standard provides two toolsets for synthetic Audio generation, Audio processing and multimedia content description called Structured Audio (SA) and BInary Format for Scenes (BIFS). Moving from a systematic analysis of SA and from the implementation of an efficient SA decoder, this paper describes the design of a virtual DSP architecture able to exploit the data level parallelism contained in many typical audio processing algorithms. The proposed virtual DSP architecture shows good performance on general purpose platforms and can be easily adapted and optimized for parallel superscalar devices. The porting and results on a V-LIW DSP device confirm the effectiveness and flexibility of the approach, particularly suitable for standalone embedded solutions.

关键词： Digital signal processing

来源：评论

学校读者我要写书评

暂无评论

Asymptotic performance of ML channel estimators in WCDMA systems: Randomized codes approach

Asymptotic performance of ML channel estimators in WCDMA sys...

引用

IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Mestre, X Fonollosa, JR Univ Politecn Catalunya Dept Signal Theory & Commun ES-08034 Barcelona Spain

ISBN: (纸本)0780370414

This paper analyzes the asymptotic performance of Maximum Likelihood (ML) channel estimation algorithms in wideband code division multiple access (WCDMA) scenarios. We concentrate on systems with periodic spreading sequences (period larger than or equal to the symbol span) with high spreading factors, where the transmitted signal contains a code division multiplexed pilot for channel estimation purposes. Assuming randomized training and code sequences, we derive and compare the asymptotic covariances of the training-only (TO), semi-blind conditional ML (CML) and semi-blind Gaussian ML (GML) channel estimators.

关键词： Code division multiple access

来源：评论

学校读者我要写书评

暂无评论

Key distribution for secure multimedia multicasts via data embedding

Key distribution for secure multimedia multicasts via data e...

引用

IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Trappe, W Song, J Poovendran, R Liu, KJR Univ Maryland Dept Elect & Comp Engn College Pk MD 20742 USA

ISBN: (纸本)0780370414

The problem of controlling access to multimedia multicasts requires the distribution and maintenance of keying information. The conventional approach to distributing keys is to use a channel independent of the multimedia content. We propose a second approach that involves the use of an data-dependent channel, and can be achieved for multimedia by using data embedding techniques. Using data embedding to convey rekeying messages can provide an additional layer of security when compared with the traditional approach. We then introduce multicast key distribution, and employ a recent tree-based key distribution scheme to exhibit the factors involved in transmitting keys using data embedding.

关键词： Multicasting

来源：评论

学校读者我要写书评

暂无评论

A class of asymptotically optimum iterated-decision multiuser detectors

A class of asymptotically optimum iterated-decision multiuse...

引用

IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Chan, AM Wornell, GW MIT Res Lab Elect Cambridge MA 02139 USA

ISBN: (纸本)0780370414

A promising class of nonlinear multiuser detectors is introduced for CDMA systems. These "iterated-decision" multiuser detectors use optimized multipass algorithms to successively cancel multiple-access interference (MAI) from received data and generate symbol decisions whose reliability increases monotonically with each iteration. They significantly outperform decorrelating detectors and linear minimum mean-square error (MMSE) multiuser detectors, but have the same order of computational complexity., When the ratio of the number of users to the spreading factor is below a certain threshold, iterated-decision multiuser detectors asymptotically achieve the performance of the "optimum" multiuser detector, i.e., maximum-likelihood (ML) decoding.

关键词： Code division multiple access

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共33页 << < 23 24 25 26 27 28 29 30 31 32 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：