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

9,230 篇 会议
1,025 篇 期刊文献
3 篇 学位论文

馆藏范围

10,258 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

2,334 篇 工学
- 1,344 篇 电气工程
- 919 篇 计算机科学与技术...
- 571 篇 信息与通信工程
- 230 篇 软件工程
- 199 篇 电子科学与技术（可...
- 187 篇 仪器科学与技术
- 126 篇 机械工程
- 101 篇 控制科学与工程
- 36 篇 测绘科学与技术
- 27 篇 网络空间安全
- 24 篇 光学工程
- 24 篇 生物医学工程（可授...
- 7 篇 材料科学与工程（可...
- 7 篇 航空宇航科学与技...
- 6 篇 土木工程
- 5 篇 环境科学与工程（可...
- 5 篇 生物工程
306 篇 理学
- 130 篇 系统科学
- 104 篇 物理学
- 28 篇 数学
- 27 篇 地球物理学
- 16 篇 生物学
- 5 篇 地理学
261 篇 医学
- 252 篇 临床医学
- 18 篇 特种医学
- 8 篇 基础医学(可授医学...
103 篇 管理学
- 96 篇 管理科学与工程(可...
40 篇 文学
- 38 篇 新闻传播学
16 篇 军事学
- 16 篇 军队指挥学
10 篇 农学
- 5 篇 作物学
6 篇 法学
5 篇 艺术学
1 篇 经济学
1 篇 教育学

主题

10,258 篇 transform coding
5,167 篇 image coding
2,135 篇 discrete cosine ...
1,777 篇 video compressio...
1,700 篇 decoding
1,314 篇 streaming media
1,179 篇 bit rate
1,114 篇 encoding
862 篇 quantization
829 篇 video coding
706 篇 watermarking
646 篇 discrete wavelet...
620 篇 robustness
603 篇 image reconstruc...
602 篇 psnr
536 篇 pixel
468 篇 bandwidth
461 篇 feature extracti...
439 篇 image quality
404 篇 motion estimatio...

机构

29 篇 school of electr...
25 篇 department of el...
24 篇 philips research...
24 篇 hewlett packard ...
23 篇 institute for in...
21 篇 department of co...
21 篇 school of comput...
19 篇 microsoft resear...
19 篇 university of ne...
18 篇 department of el...
16 篇 university of sc...
15 篇 department of el...
15 篇 ibm thomas j. wa...
15 篇 department of el...
15 篇 department of el...
15 篇 institute of com...
14 篇 department of el...
14 篇 at and t bell la...
14 篇 david samoff res...
13 篇 department of el...

作者

36 篇 hitoshi kiya
30 篇 andreas uhl
27 篇 thomas richter
26 篇 marek domański
25 篇 fernando pereira
24 篇 liang-gee chen
22 篇 marco mattavelli
22 篇 o.c. au
21 篇 feng wu
20 篇 jiwu huang
18 篇 david taubman
17 篇 xiaolin wu
16 篇 tsung-han tsai
15 篇 krzysztof wegner
14 篇 wiegand thomas
14 篇 jakub stankowski
14 篇 m. vetterli
14 篇 y. nakajima
14 篇 thomas wiegand
14 篇 tomasz grajek

语言

10,152 篇 英文
55 篇 其他
47 篇 中文
2 篇 克罗地亚文
2 篇 土耳其文

检索条件"主题词=transform coding"

共 10258 条记录，以下是4831-4840 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：

Satellite images watermarking based on wavelet technique

Satellite images watermarking based on wavelet technique

引用

International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA

作者： I.B. Ismail I.R. Farah M.B. Ahmed Laboratoire de Recherche en Informatique Arabisée et Documentique Intégrée R.IA.D.I Ecole Nationale des Sciences de l'Informatique Campus Universitaire de Manouba Mannouba Tunisia

The huge development of new technologies and the apparition of more and more sophisticated open communication system creates a new challenge to protect digital content from piracy. Digital watermarking is a research axis and a new technique suggested as a solution to these problems. This technique consists of inserting an identification information (watermark) into digital data (audio, video, image, databases...) in an invisible and indelible manner and in such a way not to degrade original medium's quality. Moreover, we must be able to correctly extract the watermark despite the deterioration of the watermarked medium (i.e. attacks). In this paper we propose a system for watermarking satellite images. We chose to embed the watermark into frequency domain, precisely the discrete wavelet transform (DWT). We applied our algorithm on satellite images of Tunisian center. The experiments show satisfying results. In addition, our algorithm showed an important resistance facing different attacks, notably the compression (JPEG, JPEG2000), the filtering, the histogram's manipulation and geometric distortions such as rotation, cropping, and scaling

关键词： Satellites Watermarking Discrete wavelet transforms transform coding Protection Image databases Audio databases Degradation Data mining Frequency domain analysis

来源：评论

学校读者我要写书评

暂无评论

A New Algorithm for Removing Blocking Artifacts in JPEG Compressed Images

A New Algorithm for Removing Blocking Artifacts in JPEG Comp...

引用

IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Krishnan Nallaperumal Jennifer J. Ranjani Justin Varghese S. Annam Centre for Information Technology & Engineering Manonmaniam Sundaranar University Tirunelveli India Department of Information Technology Thiagarajar College of Engineering Madurai India

The industry standard joint photographers expert group (JPEG) compression can lead to noticeable 'blocking artifacts' in many cases. High frequency details of the coded images are mainly contaminated by quantization noise. The deblocking approach of JPEG compressed images using overcomplete wavelet representation can be improved by preserving the image details and reducing the effect of quantization noise as much as possible. An estimation of the actual pixel is obtained from the decoded image. The edge information is extracted from this estimated image by exploiting the cross-scale correlations among the wavelet coefficients and is protected, while the blocking effects in the smooth background regions are smoothed out in the wavelet domain without much blurring. A better improvement in visual quality is achieved if dual tree complex wavelet filters are used instead of the dyadic discrete wavelet transform

关键词： transform coding Image coding Discrete wavelet transforms Quantization Frequency Noise reduction Pixel Decoding Data mining Wavelet coefficients

来源：评论

学校读者我要写书评

暂无评论

Adaptive modeling of macro block bit-quantization mapping for MPEG encoders

Adaptive modeling of macro block bit-quantization mapping fo...

引用

IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： Ning Zhang Chwan-Hwa Wu Department of Electrical Engineering Aubum University AL USA

ISBN: (纸本)0780336453

In this paper, we have presented our work on the adaptive modeling of quantization process at macro block layer of MPEG encoders. The difficulty of this modeling problem lies in two aspects: 1) the highly nonlinear nature of the relation between the quantization level and the corresponding number of bits; and 2) the nonstationaryness inherent to most of the practical video signals. We deal with the first aspect of the difficulty by using binary tree (B-tree) fuzzy interpolation algorithm for data approximation problems. The B-tree algorithm turns complicated high dimensional fuzzy decision making process into series of one dimensional fuzzy interpolations in a hierarchical manner. The difficulty of the nonstationaryness is dealt with by online adaptation which adjusts the parameters of membership functions according to domain data. Our experimental results have shown that the adaptive model has better performance than its non-adaptive counterpart as well as the lookup table method widely used and reported in the literature, which suggests that improvements can be well expected if the model is applied to the design of quantization control schemes for MPEG encoders.

关键词： Quantization transform coding Context modeling Interpolation Video compression Video on demand Bit rate Videoconference Electric variables control Signal processing

来源：评论

学校读者我要写书评

暂无评论

Convolutional Neural Network Image Classification Method Integrating Classic Image Features

Convolutional Neural Network Image Classification Method Int...

引用

International Conference on Computational Intelligence and Applications (ICCIA)

作者： Qi Hao Jie Huang Bin Wang Feng Zhou Cyber Science and Engineering Southeast University Nanjing China Zhejiang Key Laboratory of Artificial Intelligence of Things Network and Data Security Hangzhou China

ISBN: (数字)9798350352214

ISBN: (纸本)9798350352221

Classic image features were once widely used in image classification but have been almost entirely replaced by neural networks today. While the performance of neural networks, especially convolutional neural networks (CNNs), is indisputable, their lack of interpretability has become a significant limitation in recent years. This paper explores the effective combination of classic image features and convolutional image features, investigating their differences and similarities. Through a series of experiments, a method is proposed to effectively integrate these two types of features by employing a multiplicative attention mechanism. This approach combines standardized MPEG-7 descriptors with convolutional features before feeding them into the fully connected layer for classification. The final model demonstrates an improvement in classification accuracy and indicates the potential of learning traditional image features from the integrated features.

关键词： Attention mechanisms Accuracy Computational modeling Neural networks transform coding Convolutional neural networks Computational intelligence Image classification

来源：评论

学校读者我要写书评

暂无评论

A Novel Shift Block for Reducing Quantization Effects within Four Adjacent DCT Domains

A Novel Shift Block for Reducing Quantization Effects within...

引用

Congress on Image and Signal Processing, CISP

作者： Yen-Yu Chen Ying-Wen Chang Department of Information Management Chung-Chou Institute of Technology Taiwan

Blocking effect is the major drawback in DCT-based (discrete cosine transformation) codecs at low bit-rates. In this paper, a post-processing filter is proposed in DCT frequency domain. The proposed algorithm uses a shift block within four adjacent DCT blocks to reduce computational complexity. By slightly modifying several DCT coefficients in the shift block, the artifacts that result from quantization and dequantization process are alleviated. The simulation results show that both visual perception and objective image quality are improved noticeably.

关键词： Quantization Discrete cosine transforms Filters Image edge detection Frequency Signal processing algorithms Image quality Image coding transform coding Signal processing

来源：评论

学校读者我要写书评

暂无评论

Dynamic rate control methods for continuous media transmission

Dynamic rate control methods for continuous media transmissi...

引用

International Conference on Information Networking

作者： J. Sato K. Hashimoto Y. Shibata Department of Information and Computer Science Toyo University Kawagoe Saitama Japan

On continuous media transmission using compression techniques, a variable bit rate transmission method is required to maintain the video frame rate at a constant. At the same time, user's Quality of Service must be guaranteed even if packet loss and delay occur by CPU loads on the client or server, and network traffic increase. In this paper, two variable bit rate transmission methods are described when MPEG compressed video are used. We also introduce both a packet rate control method to reduce the packet loss, and frame rate control method to maintain the frame rate constant under dynamic load conditions. We implemented a prototyped Packet Audio/Video System (PAVS) to evaluate performance of these rate control functions. Through the performance evaluation our PAVS performance has demonstrated the usefulness of our suggested control methods.

关键词： Video compression Bit rate Network servers Quality of service transform coding Control systems Telecommunication traffic Protocols Time factors Prototypes

来源：评论

学校读者我要写书评

暂无评论

Digital Image Watermarking Using Holograms

Digital Image Watermarking Using Holograms

引用

IEEE Signal Processing and Communications Applications (SIU)

作者： Okman Akar Elektrik ve Elektronik Müihendisliği Bülumü Orta Doğu Teknik Üniversitesi Ankara Turkey

In image watermarking, holography usage is a very novel approach. Holography, in fact, is a method to store three-dimensional (3-D) information of an object, however, many of its properties make it very applicable in use of watermarking. In this work, a new blind image watermarking approach is proposed, which embeds a hologram as the watermark into a host image. Moreover, the robustness of the method is examined against some attacks like, JPEG compression, noise addition and cropping

关键词： Digital images Watermarking Charge coupled devices Gaussian processes Holography Noise robustness transform coding Image coding Internet Testing

来源：评论

学校读者我要写书评

暂无评论

Advanced DCT rate control by single step analysis

Advanced DCT rate control by single step analysis

引用

IEEE International Conference on Consumer Electronics (ICCE)

作者： A. Bruna A. Capra S. Battiato S. La Rosa STMicroelectronics AST Catania Lab Italy Dipartimento di Matematica e Informatica Catania University Italy Dipartimento di Matematica e Informatica Catania University

The work presents a robust rate control algorithm for JPEG compression, mainly used in digital cameras. The overall control is based on the statistical properties of JPEG compressed images, the relationship between the coding bit rate and the percentage of zeros among the quantized transform coefficients. It allows a good trade off between resources and precision to be obtained.

关键词： Discrete cosine transforms Image coding transform coding Quantization Iterative algorithms Histograms Engines Digital cameras Bit rate Energy consumption

来源：评论

学校读者我要写书评

暂无评论

Application of overcomplete ICA to SAR image compression

Application of overcomplete ICA to SAR image compression

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： A. Budillon G. Cuozzo C. D'Elia G. Schirinzi Dipartimento per le Tecnologie Universita di Napoli Parthenope Napoli Italy DAEIMI-Università degli studi di Cassino Cassino Frosinone Italy

In this paper the application of a transform coding technique, based on overcomplete independent component analysis (ICA), for the compression of single look intensity synthetic aperture radar (SAR) images is explored. The method has the advantage of representing the image through almost statistically independent coefficients, with an assigned distribution, so that a scalar entropy constrained quantizer, optimized for the coefficients statistics, can be used. Numerical results on ERS-1 data are presented.

关键词： Independent component analysis Image coding Synthetic aperture radar Entropy Quantization transform coding Constraint optimization Laplace equations Statistical distributions Earth

来源：评论

学校读者我要写书评

暂无评论

Steganalysis for Small-Scale Training Image Pairs with Cover-Stego Feature Difference Model

Steganalysis for Small-Scale Training Image Pairs with Cover...

引用

IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)

作者： Chao Xia Yaqi Liu Qingxiao Guan Sai Ma Yu Nan Jiahui Fu Beijing Electronic Science and Technology Institute Beijing China Jimei University Xiamen China Academy of Broadcasting Science Beijing China Zhengzhou Science and Technology Institute Zhengzhou China Zhengzhou Xinda Institute of Advanced Technology Zhengzhou China

Current steganalytic classifiers always need a large number of cover-stego image pairs for training. However in this paper we focus on a scenario where steganalysts have a few cover-stego image pairs in hand. Meanwhile steganalysts have no knowledge of the embedding algorithm, and cannot generate corresponding stego images after collecting additional cover images. Hence in this scenario steganalysts cannot match more cover-stego image pairs to augment the training set. To address this issue, we propose a stego feature simulation method to artificially generate cover-stego feature pairs for training. First, we design a cover-stego feature difference model to build the relationship between cover and stego features in pairs. Then, we estimate the model parameters from a few existing cover-stego image pairs in hand. Finally, after extracting steganalytic features from additionally collected cover images, we simulate corresponding stego features with the cover-stego feature difference model to match artificial feature pairs. The experimental results demonstrate that our method can effectively mitigate the shortage of training image pairs by adding adequate artificial feature pairs into training.

关键词： Training Privacy transform coding Feature extraction Classification algorithms Security

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500页 << < 480 481 482 483 484 485 486 487 488 489 > >>

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：