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

9,249 篇 会议
1,048 篇 期刊文献
3 篇 学位论文

馆藏范围

10,300 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

2,357 篇 工学
- 1,364 篇 电气工程
- 924 篇 计算机科学与技术...
- 575 篇 信息与通信工程
- 233 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
- 37 篇 测绘科学与技术
- 27 篇 网络空间安全
- 25 篇 生物医学工程（可授...
- 24 篇 光学工程
- 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
307 篇 理学
- 130 篇 系统科学
- 104 篇 物理学
- 28 篇 数学
- 28 篇 地球物理学
- 16 篇 生物学
- 5 篇 地理学
264 篇 医学
- 253 篇 临床医学
- 18 篇 特种医学
- 10 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

10,300 篇 transform coding
5,193 篇 image coding
2,138 篇 discrete cosine ...
1,781 篇 video compressio...
1,704 篇 decoding
1,317 篇 streaming media
1,181 篇 bit rate
1,117 篇 encoding
864 篇 quantization
831 篇 video coding
706 篇 watermarking
647 篇 discrete wavelet...
625 篇 robustness
608 篇 image reconstruc...
602 篇 psnr
535 篇 pixel
472 篇 bandwidth
464 篇 feature extracti...
444 篇 image quality
405 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

35 篇 hitoshi kiya
30 篇 andreas uhl
28 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 wiegand thomas
15 篇 krzysztof wegner
14 篇 jakub stankowski
14 篇 m. vetterli
14 篇 y. nakajima
14 篇 thomas wiegand
14 篇 tomasz grajek

语言

10,192 篇 英文
57 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 10300 条记录，以下是4221-4230 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：

Multibit QIM watermarking using M-ary modulation and lifting

Multibit QIM watermarking using M-ary modulation and lifting

引用

International Conference on Signal Processing and Communications, SPCOM

作者： Amit Phadikar Santi P. Maity Department of Information Technology MCKV Institute of Engineering Howrah India Department of Information Technology Bengal Engineering and Science University Howrah India

Quantization index modulation (QIM) principle has shown superior performance in digital watermarking over spread-spectrum and low-bit(s) modulation based methods. In QIM based data hiding scheme, it is a challenging task to embed multiple bits of information into the same set of host signal samples. This work attempts to employ M-ary modulation for multibit QIM watermarking. The watermark embedding process may be divided into two phases. In the first phase, a binary watermark image is spatially dispersed using sequence of number generated by a secret key. In the second phase, host image is decomposed by integer wavelets and the encoded watermark bits are embedded into high-low (HL) and low-high (LH) subbands of DWT-coefficients using M-ary modulation. M-ary modulation is accomplished using near-orthogonal dither generated from the combination of random key, Hadamard matrix and step size. Simulation results show that robustness is increased, at the cost of increase in decoding complexity for high M-value.

关键词： Watermarking Modulation Robustness Decoding Quantization Image coding transform coding

来源：评论

学校读者我要写书评

暂无评论

Scalable representation of dataflow graph structures using topological patterns

Scalable representation of dataflow graph structures using t...

引用

IEEE Workshop on Signal Processing Systems (SIPS)

作者： Nimish Sane Hojin Kee Gunasekaran Seetharaman Shuvra S. Bhattacharyya Department of Electrical and Computer Engineering and Institute for Advanced Computer Studies University of Maryland College Park MD USA Air Force Research Laboratory Rome NY USA

Tools for designing signal processing systems with their semantic foundation in dataflow modeling often use high-level graphical user interface (GUI) or text based languages that allow specifying applications as directed graphs. Such graphical representations serve as an initial reference point for further analysis and optimizations that lead to platform-specific implementations. For large-scale applications, the underlying graphs often consist of smaller substructures that repeat multiple times. To enable more concise representation and direct analysis of such substructures in the context of high level DSP specification languages and design tools, we develop the modeling concept of topological patterns, and propose ways for supporting this concept in a high-level language. We augment the DIF language - a language for specifying DSP-oriented dataflow graphs - with constructs for supporting topological patterns, and we show how topological patterns can be effective in various aspects of embedded signal processing design flows using specific application examples.

关键词： Arrays Topology Digital signal processing Semantics transform coding Field programmable gate arrays

来源：评论

学校读者我要写书评

暂无评论

A Predictable Multiprocessor Design Flow for Streaming Applications with Dynamic Behaviour

A Predictable Multiprocessor Design Flow for Streaming Appli...

引用

Euromicro Symposium on Digital System Design

作者： Sander Stuijk Marc Geilen Twan Basten Department of Electrical Engineering Eindhovan University of Technology Netherlands

The design of new embedded systems is getting more and more complex as more functionality is integrated into these systems. To deal with the design complexity, a predictable design flow is needed. The result should be a system that guarantees that an application can perform its own tasks within strict timing deadlines, independent of other applications running on the system. Synchronous Dataflow Graphs (SDFGs) provide predictability and are often used to model time-constrained streaming applications that are mapped onto a multiprocessor platform. However, the model abstracts from the dynamic application behaviour which may lead to a large overestimation of its resource requirements. We present a design flow that takes the dynamic behaviour of applications into account when mapping them onto a multiprocessor platform. The design flow provides throughput guarantees for each application independent of the other applications while taking into account the available processing capacity, memory and communication bandwidth. The design flow generates a set of mappings that provide a trade-off in their resource usage. This trade-off can be used by a run-time mechanism to adapt the mapping in different use-cases to the available resource. The experimental results show that our design flow reduces the resource requirements of an MPEG-4 decoder by 66% compared to a state-of-the-art design flow based on SDFGs.

关键词： Throughput Tiles Decoding transform coding Timing Schedules Bandwidth

来源：评论

学校读者我要写书评

暂无评论

A web-based DICOM-format image archive, medical image compression and DICOM viewer system for teleradiology application

A web-based DICOM-format image archive, medical image compre...

引用

SICE Annual Conference

作者： Piyamas Suapang Kobchai Dejhan Surapun Yimmun Department of Telecommunications Engineering Faculty of Engineering King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand Department of Industrial Physics and Medical Instrumentation Faculty of Applied Science King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand

ISBN: (纸本)9781424476428

The design and implementation of web-based DICOM-format image archive, medical image compression and DICOM viewer system for teleradiology application which DICOM server was developed using software such as Borland Delphi 6.0, PHP and MySQL for image archive, image compression, image processing and image transmission. The system provides the following facilities: (1) DICOM-format image archive. (2) Medical Image Compression based on JPEG and JPEG2000. and (3) DICOM viewer. The results shown that (1) our system can also convert the image data both single frame and multiframes in normal or automatic DICOM process into the standard DICOM 3.0 format without altering the image data. (2) The resulting images are then compressed with two different techniques - JPEG and JPEG2000. The significant advantage of JPEG2000 over normal JPEG is that the error from JPEG2000 compression is smaller than the error from JPEG. Nevertheless, both methods share a similar mishap; when the compression ratio increases, they both generate more error than the processes on lower compression ratio. And (3) our system can open single frame and multiframes, each of which can exhibit information in .dcm file format with no distortion and digital image processing based on local contrast enhancement, adaptive interpolators techniques, colour transformation and cine loop. The system has been developed and provided medical image services over long distance which showed the usefulness of our approach.

关键词： transform coding Image coding DICOM Databases Pixel

来源：评论

学校读者我要写书评

暂无评论

Efficient High Level Synthesis Exploration Methodology Combining Exhaustive and Gradient-Based Pruned Searching

Efficient High Level Synthesis Exploration Methodology Combi...

引用

IEEE Computer Society Annual Symposium on VLSI

作者： Sotirios Xydis Christos Skouroumounis Kiamal Pekmestzi Dimitrios Soudris George Economakos Electrical and Computer Engineering Department National and Technical University of Athens Greece

ISBN: (纸本)9781424473212

This paper presents a methodology for fast and efficient Design Space Exploration during High Level Synthesis. An augmented instance of the design space is studied taking under consideration the effects of both compiler- and architectural-level transformations onto the final datapath. A new gradient-based pruning technique has been developed, which evaluates large portions of the augmented solution space in a quick manner. At a second level, the proposed pruning technique is combined with exhaustive exploration in order to guarantee the quality of design solutions. We show that the proposed methodology delivers (i) higher quality designs than exploration methods which do not account the introduced extended design space, (ii) with considerable reductions of the exploration's runtime and (iii) efficient convergence to global optima.

关键词： Resource management Space exploration Kernel Discrete cosine transforms Runtime transform coding Parallel processing

来源：评论

学校读者我要写书评

暂无评论

Recent developments on standardisation of MPEG-7 Visual Signature Tools

Recent developments on standardisation of MPEG-7 Visual Sign...

引用

IEEE International Conference on Multimedia and Expo (ICME)

作者： P. Brasnett S. Paschalakis M. Bober Mitsubishi Electric Research and Development Centre Europe Guildford UK

This paper presents the latest developments and possible new directions for future work in standardisation of Visual Signature Tools within the Moving Picture Experts Group (MPEG). The tools, which include the Image Signature descriptor and the recently completed Video Signature descriptor, form a part of the MPEG-7 specification. They enable fast and robust detection of duplicate or derived visual media content, images and videos. Descriptors of this type are sometimes also referred to as fingerprints or robust hashes. Here we mainly focus on introducing the technology behind the recently completed Video Signature Tools and describe some recent developments and demonstration applications for the Image Signature Tools. Finally, we briefly present MPEG exploratory investigations on requirements of searching for different images containing the same visual objects within the mobile visual search framework.

关键词： transform coding Visualization Robustness Testing Feature extraction Indexes Histograms

来源：评论

学校读者我要写书评

暂无评论

A reduced reference approach based on bidimensional empirical mode decomposition for image quality assessment

A reduced reference approach based on bidimensional empirica...

引用

International Symposium on I/V Communications and Mobile Network (ISVC)

作者： Abdelkaher Ait Abdelouahad Mohammed El Hassouni Faculté des sciences LRIT unité associée au CNRST Rabat Maroc DESTEC FLSHR Rabat Maroc

In this paper, we present a reduced reference method for image quality assessment (RRIQA). This method is based on statistical properties of the bidimensional empirical mode decomposition (BEMD) components, called intrinsic mode function (IMF). First we decompose both reference and distorted images to IMFs, then we compute the distance between marginal probability distributions of each IMF coefficients of the reference image, and its corresponding IMF of the distorted image using the Kullback Leibler divergence (KLD) as a measure of image distortion. To summarize the histogram of each IMF coefficients of the reference image, we use the Generalized Gaussian density model (GGD), in order that only a vector of few features will be needed for the image quality assessment(IQA) purpose. This method is simple to implement and it outperforms some existing results especially for the blur and the white noise distortion.

关键词： Databases Distortion measurement Histograms Image quality transform coding Feature extraction White noise

来源：评论

学校读者我要写书评

暂无评论

Resource aware real-time stream adaptation for MPEG-2 transport streams in constrained bandwidth networks

Resource aware real-time stream adaptation for MPEG-2 transp...

引用

IEEE International Conference on Multimedia and Expo (ICME)

作者： Anand Kotra Gerhard Fohler Technische Universität Kaiserslautern Germany

In this demo, we present three lean methods for real-time adaptation of live MPEG-2 video to limited and varying network bandwidth. Our methods use real-time resource management techniques to determine available resources and steer adaptation decisions. Then, the modified stream consists only of frames with a high likelyhood of being processed completely, the resulting stream will only use resources when they are effectively used. We present three related approaches, based on skipping entire frames, or frames and DCT coefficients for finer granularity and thus smaller underutilization.

关键词： Streaming media Bandwidth Data acquisition transform coding Real time systems Availability Discrete cosine transforms

来源：评论

学校读者我要写书评

暂无评论

A Novel Semi-fragile Authentication Watermarking Scheme of Color JPEG Image in Compressed Domain

A Novel Semi-fragile Authentication Watermarking Scheme of C...

引用

International Conference on Multimedia Information Networking and Security (MINES)

作者： Qunting Yang Tiegang Gao Fan Li College of Information Science Nankai University Tianjin China College of Software Nankai University Tianjin China

A novel semi-fragile watermarking scheme of JPEG image in compressed domain is proposed. A chaotic map model based an authentication generating model is introduced. The DCT-transformed matrix of luminance plane in YCbCr color space is quantized by a modified quantized table. Then the low-frequency coefficients and location of each image block are used as the input of authentication generating model to generate binary authentication sequence. The sequence is embedded in the middle-frequency coefficients of each block after quantization. Finally, the authentication results are improved by a cross window. Experimental results illustrate that the watermarked image has good imperceptibility and could tolerate multiple cycles of JPEG compression. It is also sensitive to malicious manipulations and could localize those tampered regions correctly.

关键词： Watermarking Authentication transform coding Image coding Discrete cosine transforms Quantization PSNR

来源：评论

学校读者我要写书评

暂无评论

Frame-based parallelization of MPEG-4 on compute unified device architecture (CUDA)

Frame-based parallelization of MPEG-4 on compute unified dev...

引用

IEEE International Advance Computing Conference, IACC

作者： Dishant Ailawadi Milan Kumar Mohapatra Ankush Mittal Department of Electronics & Computer Engineering Indian Institute of Technology Roorkee Roorkee India

ISBN: (纸本)9781424447909

Due to its object based nature, flexible features and provision for user interaction, MPEG-4 encoder is highly suitable for parallelization. The most critical and time-consuming operation of encoder is motion estimation. Nvidia's general-purpose graphical processing unit (GPGPU) architecture allows for a massively parallel stream processor model at a very cheap price (in a few thousands Rupees). However synchronization of parallel calculations and repeated device to host data transfer is a major challenge in parallelizing motion estimation on CUDA. Our solution employs optimized and balanced parallelization of motion estimation on CUDA. This paper discusses about frame-based parallelization wherein parallelization is done at two levels - at macroblock level and at search range level. We propose a further division of macroblock to optimize parallelization. Our algorithm supports real-time processing and streaming for key applications such as e-learning, telemedicine and video-surveillance systems, as demonstrated by experimental results.

关键词： MPEG 4 Standard Concurrent computing Computer architecture Motion estimation Video compression transform coding Encoding Redundancy Telemedicine Graphics

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 << < 419 420 421 422 423 424 425 426 427 428 > >>

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：