检索结果-内蒙古大学图书馆

International Conference on Image and Graphics (ICIG)

作者： Bin Luo Aihua Zheng Jin Tang Haifeng Zhao Key Laboratory of Intelligent Computing and Signal Processing of Anhui University Hefei China

This paper proposes an indexing scheme based on t- mixture model and ICA, which is more robust than Gaussian mixture modeling when atypical points (or outliers) exist or the set of data has heavy tail. This indexing scheme combines optimized vector quantizer and probabilistic approximate-based indexing scheme. Experimental results on large-scale graph database show a notable efficiency improvement with optimistic precision.

关键词： Large-scale systems Indexing Independent component analysis Image databases Robustness signal processing algorithms Nearest neighbor searches Tail Spatial databases Image retrieval

来源：评论

学校读者我要写书评

暂无评论

An Improved Resource Discovery Algorithm for Gnutella Networks

An Improved Resource Discovery Algorithm for Gnutella Networ...

引用

International Conference on Natural Computation (ICNC)

作者： Yu-Tang Guo Wan-Li Lv Bin Luo Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China

In this paper, we summarize the characteristics of message search mechanism of Gnutella P2P network model. By analyzing its disadvantages, an improvement of resource discovery algorithm is proposed, it can more effectively reduce network traffic than the existing search methods in Gnutella system, and it can also improve Gnutella network's integrity, availability and scalability.

关键词： Peer to peer computing Telecommunication traffic Routing Floods signal processing algorithms Algorithm design and analysis Scalability Network servers Search methods Intelligent networks

来源：评论

学校读者我要写书评

暂无评论

Video Abstraction Based on Relational Graphs

Video Abstraction Based on Relational Graphs

引用

International Conference on Image and Graphics (ICIG)

作者： Su-lan Zhai Bin Luo Jin Tang Chun-Yan Zhang Key Laboratory of Intelligent Computing and Signal Processing of Anhui University Hefei China

Video abstraction plays an important role in video browsing, video indexing, video retrieval and other video applications. In the paper, an automatic video abstraction method is developed based on relational graph representations. Firstly, a relational graph is constructed for all the frames in a video sequence. Secondly, the graph is partitioned into different connected subgraphs. Thirdly, Isomap is performed to reduce the dimensionality of the data set, and the output of Isomap is used as feature vector of the video frames. Lastly, a mixture model with model selection is introduced to generate the fine grain video abstraction with the centre of each clustering as the keyframes. Experiments are conducted on real world video sets with satisfying video abstraction results.

关键词： Videoconference Image retrieval Video sequences Content based retrieval Video sharing Clustering methods Graphics Video signal processing Indexing Bandwidth

来源：评论

学校读者我要写书评

暂无评论

DCT-BASED REAL DISCRETE GABOR TRANSFORM IMPLEMENTED BY UNIFIED PARALLEL LATTICE STRUCTURES

DCT-BASED REAL DISCRETE GABOR TRANSFORM IMPLEMENTED BY UNIFI...

引用

2007 International Conference on Wavelet Analysis and Pattern Recognition (ICWAPR 2007), vol.4

作者： LIANG TAO HONG-WEI LI MOEs Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China

The DCT-based real discrete Gabor transform (RDGT) is briefly reviewed in this paper, and then, block time-recursive algorithms for the efficient and fast computation of the RDGT coefficients and for the fast reconstruction of the original signal from the coefficients are developed in both the critical sampling case and the oversampling case. Unified parallel lattice structures for the implementation of the algorithms are studied. Computational complexity analysis and comparison have shown that the proposed algorithms provide a more efficient and faster approach for discrete Gabor transforms as compared to the existing discrete Gabor transform algorithms.

关键词： Discrete cosine transform (DCT) Real discrete Gabor transform (RDGT) Parallel lattice structure Block time-recursive algorithms

来源：评论

学校读者我要写书评

暂无评论

Research on THz wave generated by difference-frequency in nonlinear crystal

引用

Optoelectronics Letters 2007年第6期3卷 470-472页

作者： LIAO Tong-qlng ZHAO Qi-da LI Shu-hong Institute of Modem Optics Nankai University Tianjin 300071China Ministry of Educational Key Laboratory of Intelligent Computing ＆ Signal Processing Anhui University Hefei 230039China School of Science Tianjin Polytechnic University Tianjin 300160 China

THz wave generated by difference-frequency in nonlinear crystal in normal temperature is theoretically studied. The conclifton of phase matching is deduced and an experimental setup is proposed. With this method, THz wave can be generated without rigorous condition and can work continuously for a long period of time in room temperature.

关键词：光源非线性晶体发电光波

来源：评论

学校读者我要写书评

暂无评论

Spectral Correspondence Using Local Similarity Analysis

Spectral Correspondence Using Local Similarity Analysis

引用

International Conference on Computational intelligence and Security

作者： Jun Tang Dong Liang Nian Wang Zhao-Hong Jia Key Laboratory of Intelligent Computing & Signal Processing Ministry of Education Anhui University Hefei China

This paper presents a novel algorithm for point correspondences using graph spectral analysis. Firstly, the correspondence probabilities are computed by using the eigenvectors and eigenvalues of the proximity matrix as well as the method of alternated row and column normalizations. Secondly, local similarity evaluated by shape context is incorporated into our spectral method to refine the results of spectral correspondence via a probabilistic relaxation approach. Experiments on both real-world and synthetic data show that our method possesses comparatively high accuracy.

关键词： signal processing algorithms Eigenvalues and eigenfunctions Matrix decomposition Computational intelligence Spectral analysis Shape Robustness Jitter Security signal analysis

来源：评论

学校读者我要写书评

暂无评论

Parallel Genetic Algorithm for Finding Roots of Complex Functional Equation

Parallel Genetic Algorithm for Finding Roots of Complex Func...

引用

International Conference on Pervasive computing and Applications (ICPCA)

作者： Feng Liu Xi Chen Zhen Huang Key Laboratory of Intelligent Computing & Signal Processing Ministry of Education Anhui University Hefei China

In this paper, a parallel genetic algorithm for finding all roots of complex functional equation based on Parallel Virtual Machine (PVM) is present, research are made in some technical problems for realizing. We descr... 详细信息

关键词： Genetic algorithms Difference equations Virtual machining Algorithm design and analysis Parallel processing signal processing algorithms Circuits Simulated annealing Laboratories Concurrent computing

来源：评论

学校读者我要写书评

暂无评论

A Novel Image Content Authentication Algorithm Based on Laplace Spectra Feature

A Novel Image Content Authentication Algorithm Based on Lapl...

引用

Chinese Control Conference (CCC)

作者： Wanli Lv Yutang Guo Bin Luo Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Anhui University Hefei China

A novel image content authentication algorithm based on Laplace spectra was proposed. Outstanding feature points are extracted from the original image and a cipher point is inserted. A relational graph is then built, and the Laplace spectra of the graph are calculated to serve as image features. The Laplace spectra are quantized then embedded into the original image as a watermark. In the authentication step, the Laplace spectra of the authenticating image are calculated and compared with that of the watermark embedded in the authenticating image. If both of the spectra are identical, the image passes the authentication test. Otherwise, the tamper is found. The experimental results show that the proposed authentication algorithm can effectively detect the event and the location when the original image content is tampered viciously.

关键词： Authentication signal processing algorithms Watermarking Computer science education Feature extraction Testing Event detection Cryptography Internet Hafnium

来源：评论

学校读者我要写书评

暂无评论

Detecting and locating human eyes in face images based on progressive thresholding

Detecting and locating human eyes in face images based on pr...

引用

IEEE International Conference on Robotics and Biomimetics

作者： Liang Tao Hua-bin Wang MOE Key Laboratory of Intelligent Computing & Signal Processing Anhui University Hefei Anhui China

ISBN: (纸本)9781424417612;9781424417582;1424417619

Based on geometrical facial features and progressive thresholding, this paper presents a novel algorithm for automatic detection and localization of human eyes in grayscale or color still images with complex background. First of all, a determination criterion of eye location is established by the priori knowledge of geometrical facial features. Secondly, a range of threshold values that would separate eye blocks from others in a segmented face image is estimated. Thirdly, with the progressive increase of the threshold by an appropriate step in that range, once two eye blocks appear from the segmented image, they will be detected by the determination criterion of eye location. Finally, the 2-D correlation coefficient is used as a symmetry similarity measure to check the factuality of the two detected eyes. To avoid the background interference, skin color segmentation can be applied in order to enhance the accuracy of eye detection. The experimental results demonstrate the high efficiency of the algorithm in runtime and correct localization rate.

关键词： Face detection Humans Eyes Image segmentation Gray-scale Pixel Facial features Skin Face recognition signal processing algorithms

来源：评论

学校读者我要写书评

暂无评论

Urban road network extraction from SAR image

Urban road network extraction from SAR image

引用

MIPPR 2007: Remote Sensing and GIS Data processing and Applications;and Innovative Multispectral Technology and Applications

作者： Cheng, Pengxue Hu, Maolin Lab. of Intelligent Computing and Signal Processing Anhui University Hefei Anhui 230039 China Key Laboratory of Wireless Sensor Network and Communication Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China

ISBN: (纸本)9780819469540

In this paper, a technique for the extraction of roads in a high resolution synthetic aperture radar (SAR) image is presented. And a three-step method is developed for the extraction of road network from space borne SAR image: the process of the feature points, road candidate detection and connection. Roads in a high resolution SAR image can be modeled as a homogeneous dark area bounded by two parallel boundaries. Dark areas, which represent the candidate positions for roads, are extracted from the image by a Gaussian probability iteration segmentation. Possible road candidates are further processed using the morphological operators. And the roads are accurately detected by Hough Transform, and the extraction of lines is achieved by searching the peak values in Hough Space. In this process, to detect roads more accurately, post-processing, including noisy dark regions removal and false roads removal is performed. At last, Road candidate connection is carried out hierarchically according to road established models. Finally, the main road network is established from the SAR image successfully. As an example, using the ERS-2SAR image data, automatic detection of main road network in Shanghai Pudong area is presented.

关键词： Feature extraction

来源：评论

学校读者我要写书评

暂无评论

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：

请选择收藏分类：

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

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：