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

9,244 篇 会议
1,048 篇 期刊文献
3 篇 学位论文

馆藏范围

10,295 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

2,358 篇 工学
- 1,365 篇 电气工程
- 923 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

10,295 篇 transform coding
5,190 篇 image coding
2,139 篇 discrete cosine ...
1,781 篇 video compressio...
1,704 篇 decoding
1,315 篇 streaming media
1,181 篇 bit rate
1,117 篇 encoding
865 篇 quantization
832 篇 video coding
706 篇 watermarking
647 篇 discrete wavelet...
624 篇 robustness
608 篇 image reconstruc...
602 篇 psnr
535 篇 pixel
472 篇 bandwidth
462 篇 feature extracti...
444 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
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

10,187 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 10295 条记录，以下是4571-4580 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：

JPEG AI Compressed Domain Face Detection

JPEG AI Compressed Domain Face Detection

引用

IEEE Workshop on Multimedia Signal Processing

作者： Ayman Alkhateeb Alessandro Gnutti Fabrizio Guerrini Riccardo Leonardi João Ascenso Fernando Pereira Dep. of Information Engineering CNIT - University of Brescia Italy Dep. of Electronics Engineering University of Rome Tor Vergata Italy Instituto Superior Técnico Universidade de Lisboa - Instituto de Telecomunicações Lisbon Portugal

ISBN: (数字)9798350387254

ISBN: (纸本)9798350387261

Learning-based image coding has achieved competitive performance in terms of compression efficiency, while also gaining a key advantage in the ability to carry out computer vision tasks directly in the compressed domain. In fact, the latent representation which is generated using deep learning techniques may natively encapsulate all visual features needed for processing tasks, thereby eliminating the need to perform the expensive synthesis transform process at the decoder side. In this paper, it is proposed to perform face detection using the latent code present in the JPEG AI architecture. First, some experiments show how decoded images can be efficiently processed for face detection without retraining, albeit with some performance degradation. Then, for the first time a compressed domain RetinaFace-based detector applied to JPEG AI latent representations is competitively proposed. The performance achieved is comparable to the performance of the original RetinaFace applied to the reconstructed JPEG AI images, while reducing computational complexity since it bypasses the image decoding process. It is expected that this approach might be extended to other vision tasks since the JPEG AI representation format is not tailored specifically for any computer vision task.

关键词： Visualization Image coding transform coding transforms Signal processing Decoding Face detection Artificial intelligence Image reconstruction Faces

来源：评论

学校读者我要写书评

暂无评论

An area-efficient IDCT architecture for multiple video standards

An area-efficient IDCT architecture for multiple video stand...

引用

International Conference on Information Science and Engineering (ICISE)

作者： Guiying Liu School of Information Science and Technology Zhanjiang Normal University Zhanjiang China

In this paper, we introduce a unified 1-D IDCT architecture for a video decoder supporting multiple standards including AVS, VC-1, MPEG-4 and H.264. The low-cost architecture is implemented by the method of matrix decomposition and sharing resources such as adders and shifters as far as possible. We make use of the coefficients in AVS and VC-1 to reduce the complexity of IDCT based on MPEG-4 greatly. And multipliers are replaced by shifters and adders, which are much more area-efficient. Researching on the relationship of coefficients among AVS, VC-1, and MPEG-4, we propose a low-cost hardware sharing architectures requiring lower hardware cost than that of the individual and separate implementations.

关键词： transform coding transforms Adders Computer architecture Standards Matrix decomposition Decoding

来源：评论

学校读者我要写书评

暂无评论

A fast degradation-free algorithm for DCT block extraction in the compressed domain

A fast degradation-free algorithm for DCT block extraction i...

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Y. Shibata Zhigang Chen R.H. Campbell Platform Software Development Center Sony Corporation Tokyo Japan Department of Computer Science University of Illinois Urbana-Champaign Urbana IL USA

A fast, degradation-free solution for the DCT block extraction problem is proposed. The problem is defined as extracting a DCT block from a DCT compressed frame composed of DCT blocks. This problem is encountered in both video/image manipulations in the compressed domain and transcodecs, for example, converting from MPEG to Motion JPEG. Traditionally, solutions involve using the pixel domain manipulation or Chang's (1992) algorithm with approximations. The new solution expands Chang's algorithms, takes full advantage of a fast DCT algorithm, and exploits characteristics of the input DCT blocks without any approximation. The new DCT block extraction achieves 70% performance improvement without any degradation of image quality compared with the conventional solutions.

关键词： Degradation Discrete cosine transforms Approximation algorithms Image quality Image coding transform coding Motion compensation Programming Data mining Video compression

来源：评论

学校读者我要写书评

暂无评论

Security for Video Surveillance with Privacy

Security for Video Surveillance with Privacy

引用

International Conference on Internet Technology and Applications (iTAP)

作者： Jie Shen XiaoYu Zheng Sch. of Comput. Sci. & Eng. Univ. of Electron. Sci. & Technol. of China Chengdu China Hydro-China Chengdu Eng. Corp. Chengdu China

In this paper, a video surveillance system is designed to provide means for ensuring privacy information security and offer the capability of proving authenticity. First, a real-time scrambling approach to conceal video information is presented. The sign of transform coefficients for intra macro- block is pseudo-randomly flipped, and so only the authorized persons are allowed to correctly decode the code-stream. At the same time, a method for embedding digital watermark into videos is proposed. The relationship among the DC components in several successive frames is used for hiding data. Simulation results based on MPEG-4 show that a good level of security is provided by the end-to-end security scheme. Furthermore, this is achieved with a small impact on coding performance and computation complexity.

关键词： Privacy Watermarking Video surveillance Streaming media Receivers transform coding

来源：评论

学校读者我要写书评

暂无评论

Copy move forgery detection based on LBP

Copy move forgery detection based on LBP

引用

IEEE Signal Processing and Communications Applications (SIU)

作者： Güzin Ulutaş Mustafa Ulutaş Vasif V. Nabiyev Bilgisayar Mühendisliği Bölümü Karadeniz Teknik Üniversitesi Trabzon Turkey

Increase on the availability of the image editing tools makes it easy to create digital forgeries. More popular forgery in image manipulation is the copy move forgery where part of an image is copied into another location to hide an object. The methods that are used to detect the copy move forgery in images have a drawback. Length of the feature vector that represents an image block affects the time complexity of the detection algorithm. In this work, we use the local binary patterns (LBP) to represent an image block. LBP is used to reduce the dimension of the features. Experimental results also show that the method can detect the duplicated regions even when an image was distorted by JPEG compression or Gaussian blurring.

关键词： Forgery transform coding Art Detection algorithms Digital images Robustness Abstracts

来源：评论

学校读者我要写书评

暂无评论

Scalable authentication for various representations of JPEG 2000 images

Scalable authentication for various representations of JPEG ...

引用

IEEE International Conference on Image Processing

作者： Masafumi Koide Keiichi Iwamura Tokyo University of Science Chiyoda Tokyo Japan

This paper presents an authentication scheme for a JPEG 2000 image codestream, which is obtained by using JPEG 2000 Interactive Protocol (JPIP). JPIP allows a client to request a JPEG 2000 image that has a different representation from the original image. The client-requested image codestream is a portion of the original JPEG 2000 codestream and its structure differs for each client request. To verify the authenticity of the image requested by the client, a scalable verification mechanism is required. Hence, we propose a new scalable authentication scheme using an aggregate signature. The proposed scheme allows the scalable generation of digital signatures for any client-requested image. Simulation results show the effectiveness of the proposed scheme.

关键词： transform coding Aggregates Authentication Servers Streaming media Image resolution Image coding

来源：评论

学校读者我要写书评

暂无评论

A Detection Method Research for Data Hiding Based on Markov Chain

A Detection Method Research for Data Hiding Based on Markov ...

引用

International Conference on Computational and Information Sciences (ICCIS)

作者： Zhu Li Zhao Huimin Industrial Training Center Guangdong Polytechnic Normal University Guangzhou China College of Electronics and Information Guangdong Polytechnic Normal University Guangzhou China

For theoretical disadvantages of detecting images signal based on independent and identically distributed (i.i.d.) models used for hiding data, a novel detection method is provided based on Markov chain in the paper. The Markov chain model provides an analytically tractable framework whose predictions are consistent with the performance of practical hiding data algorithms that account for spatial dependencies. Numerical results are provided for image information hiding techniques of using SS, QIM, and LSB, respectively.

关键词： Data models Markov processes transform coding Silicon Benchmark testing Computational modeling Distributed databases

来源：评论

学校读者我要写书评

暂无评论

PhotoProof: Cryptographic Image Authentication for Any Set of Permissible transformations

PhotoProof: Cryptographic Image Authentication for Any Set o...

引用

IEEE Symposium on Security and Privacy

作者： Assa Naveh Eran Tromer Blavatnik School of Computer Science Tel Aviv University Tel Aviv Israel

ISBN: (纸本)9781509008254

Since the invention of the camera, photos have been used to document reality and to supply proof of events. Yet today it is easy to fabricate realistic images depicting events that never happened. Thus, dozens of papers strive to develop methods for authenticating images. While some commercial cameras already attach digital signatures to photographs, the images often undergo subsequent transformations (cropping, rotation, compression, and so forth), which do not detract from their authenticity, but do change the image data and thus invalidate the signature. Existing methods address this by signing derived image properties that are invariant to some set of transformations. However, these are limited in the supported transformations, and often offer weak security guarantees. We present PhotoProof, a novel approach to image authentication based on cryptographic proofs. It can be configured, according to application requirements, to allow any permissible set of (efficiently computable) transformations. Starting with a signed image, our scheme attaches, to each legitimately derived image, a succinct proof of computational integrity attesting that the transformation was permissible. Anyone can verify these proofs, and generate updated proofs when applying further permissible transformations. Moreover, the proofs are zero-knowledge so that, for example, an authenticated cropped image reveals nothing about the cropped-out regions. PhotoProof is based on Proof-Carrying Data (PCD), a cryptographic primitive for secure execution of distributed computations. We describe the new construction, prove its security, and demonstrate a working prototype supporting a variety of permissible transformations.

关键词： Authentication Image coding Watermarking Robustness Cameras transform coding Cryptography

来源：评论

学校读者我要写书评

暂无评论

Efficient and reliable dynamic quality control for compression of compound document images

Efficient and reliable dynamic quality control for compressi...

引用

IEEE International Conference on Image Processing

作者： A. Said Hewlett-Packard Laboratories Palo Alto CA USA

Compound images contain a mixture of natural images, text, and graphics. They need special care in the use of compression because text and graphics cannot withstand the significant distortion that is acceptable for natural images. One solution is to identify the areas that need to have higher settings in a dynamic quality control scheme, as supported by JPEG-SPIFF and JPEG 2000. We propose a scheme to identify those regions using a discrimination function that works with a non-linear transform to reliably identify edges, and at the same time avoid false positive detection on regions with complex patterns. It does so by exploiting the properties of histograms of coefficients of this block transform, and their entropy function, which we show can be computed efficiently via table look-up. Experimental results demonstrate the performance of the new scheme, compared to other methods in the literature.

关键词： Quality control Image coding Image edge detection Graphics transform coding Entropy Printing Laboratories Histograms Document image processing

来源：评论

学校读者我要写书评

暂无评论

Is MPEG encryption by using random list instead of zigzag order secure?

Is MPEG encryption by using random list instead of zigzag or...

引用

IEEE International Symposium on Consumer Electronics (ISCE)

作者： Lintian Qiao K. Nahrstedt Ming-Chit Tam Department of Computer Science University of Illinois Urbana-Champaign Urbana IL USA Institute of System Science NUS Singapore

This paper discusses the problems of the MPEG video encryption algorithm by using a random permutation list instead of a zigzag order within the MPEG compression process. We show that (1) the encryption method causes a significant size increase of the MPEG video stream, hence defeats the purpose of compression, and (2) the encryption method can not withstand the known-plaintext attack, therefore, should not be considered as secure. We also discuss other solutions to achieve secure, time-efficient, and size-preserving MPEG-video encryption.

关键词： Cryptography transform coding Video compression Streaming media Video on demand Videoconference Data security Digital multimedia broadcasting Computer science Multimedia communication

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 << < 454 455 456 457 458 459 460 461 462 463 > >>

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：