检索结果-内蒙古大学图书馆

International Conference on Natural Computation (ICNC)

作者： Han Su Wenjie Wang College of Computer Science Sichuan Normal University Sichuan Chengdu Key Lab of Virtual Reality and Visual Computing of Sichuan Sichuan Normal University Sichuan Chengdu Chengdu University Sichuan Chengdu

In this paper, we present a novel carried object detection method based on the key postures which is extracted through locating the key point on the gait cycle curve. The key postures which are conducive to detect the carried object are the silhouettes in sequence. Different carried type is corresponding to the different key postures. For each key posture, the deviation between the reference axis and the center line and the variance of the lower-limb width are adopted to represent features. We test our method on two databases. The results show that the method based on key postures can not only reduce the computation, but also represent features very accurately, and our method is effective.

关键词： Feature extraction Foot Shape Legged locomotion Object detection Solid modeling Virtual reality

来源：评论

学校读者我要写书评

暂无评论

26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

引用

BMC NEUROscience 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

来源：评论

学校读者我要写书评

暂无评论

CBRM: Computational Reputation Model for C2C e-Commerce Platform

CBRM: Computational Reputation Model for C2C e-Commerce Plat...

引用

International Symposium on Computational Intelligence and Design, ISCID

作者： Xueqin Li Cong Li Li Ma College of Computer Science Sichuan Normal University Chengdu China Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Chengdu China Library Sichuan Normal University Chengdu China

ISBN: (纸本)9781479970063

Online shopping has become an important and popular way of life. With the rapid C2C platform development, the credit problem in online shopping was being discussed. Serious loss of credit will leads to bad online business environment. However, till now lots of researchers just focus on seller reputation model to solve credit problem, thus buyer reputation model is seldom being considered. To solve the above problem, we proposed a Computational Buyer Reputation Model for C2C e-Commerce platform, i.e. CBRM. Five buyer reputation indicators, including transactions amount, seller ratings, buyer operations, chargeback ratio and real name authentication, were integrated into CBRM. By using AHP to distribute various indicator weights, we can obtain numeric value of buyer reputation. Therefore, these values can be used for sellers to choose appropriate buyers to deal with. Experiment results showed the efficiency and effectiveness of CBRM.

关键词： Mathematical model Computational modeling Solid modeling Authentication Numerical models visualization Virtual reality

来源：评论

学校读者我要写书评

暂无评论

A semi-supervised collaboration-training based on genetic algorithm for unlabeled data selection

A semi-supervised collaboration-training based on genetic al...

引用

International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Tao Guo Guiyang Li Xia Lan Visual Computing and Virtual Reality Key Laboratory of Sichuan Province Chengdu College of Computer Science Sichuan Normal University Chengdu

ISBN: (纸本)9781479902590

When unlabeled data is selected for updating classifier, it is easy to introduce noise or unreliable data. In this paper, a semi-supervised collaboration-training based on genetic algorithm (SCGA) is proposed. This algorithm uses optimization function of genetic algorithm to help collaboration-training algorithm to select valuable unlabeled data. Experiments on UCI datasets prove that the algorithm is useful for updating classifiers effectively and can prevent the introduction of noise.

关键词： Breast cancer Diabetes Abstracts Genetics Filtering algorithms Artificial neural networks Encoding

来源：评论

学校读者我要写书评

暂无评论

Confidence estimation for graph-based semi-supervised learning

Journal of Software

引用

Journal of Software 2012年第6期7卷 1307-1314页

作者： Guo, Tao Li, Guiyang Visual Computing and Visual Reality Key Laboratory of Sichuan Province Chengdu China College of Computer Science Sichuan Normal University Chengdu China

To select unlabeled example effectively and reduce classification error, confidence estimation for graph based semi-supervised learning (CEGSL) is proposed. This algorithm combines graph-based semi-supervised learning with collaboration-training. It makes use of structure information of sample to calculate the classification probability of unlabeled example explicitly. With multi-classifiers, the algorithm computes the confidence of unlabeled example implicitly. With dual confidence estimation, the unlabeled example is selected to update classifiers. The comparative experiments on UCI datasets indicate that CEGSL can effectively exploit unlabeled data to enhance the learning performance. © 2012 ACADEMY PUBLISHER.

关键词： Classification (of information)

来源：评论

学校读者我要写书评

暂无评论

visualizing translation variation: Shakespeare's Othello

Visualizing translation variation: Shakespeare's Othello

引用

7th International Symposium on visual computing, ISVC 2011

作者： Geng, Zhao Laramee, Robert S. Cheesman, Tom Ehrmann, Alison Berry, David M. Visual Computing Group Computer Science Department Swansea University United Kingdom College of Arts and Humanities Swansea University United Kingdom

ISBN: (纸本)9783642240270

Recognized as great works of world literature, Shakespeare's poems and plays have been translated into dozens of languages for over 300 years. Also, there are many re-translations into the same language, for example, there are more than 60 translations of Othello into German. Every translation is a different interpretation of the play. These large quantities of translations reflect changing culture and express individual thought by the authors. They demonstrate wide connections between different world regions today, and reveal a retrospective view of their cultural, intercultural, and linguistic histories. Researchers from Arts and Humanities at Swansea University are collecting a large number of translations of William Shakespeare's Othello. In this paper, we have developed an interactive visualization system to present, analyze and explore the variations among these different translations. Our system is composed of two parts: the structure-aware Treemap for document selection and meta data analysis, and Focus + Context parallel coordinates for in-depth document comparison and exploration. In particular, we want to learn more about which content varies highly with each translation, and which content remains stable. We also want to form hypotheses as to the implications behind these variations. Our visualization is evaluated by the domain experts from Arts and Humanities. © 2011 Springer-Verlag.

关键词： visualization

来源：评论

学校读者我要写书评

暂无评论

Interactive art system for multiple users based on tracking hand movements

Interactive art system for multiple users based on tracking ...

引用

IADIS International Conference Interfaces and Human computer Interaction 2011, Part of the IADIS Multi Conference on computer science and Information Systems 2011, MCCSIS 2011

作者： Kim, Byunghyung Gurari, Danna O'Donnell, Hough Betke, Margrit Boston University Image and Video Computing Group Department of Computer Science United States Boston University School of Visual Arts College of Fine Arts United States

ISBN: (纸本)9789728939526

We propose a camera-based human computer interface where hand movements directly influence the creation and manipulation of art in an interactive system. This unobtrusive, low-cost interface addresses limitations in previous interactive art systems by supporting multiple users simultaneously in an unconstrained, uncontrolled environment. We chose Markov Models for our computer vision algorithm to track multiple hands across multiple camera views in real time. We show how our algorithm can be applied as a tool for a team of users to interact with Strange Attractors and Hidden Paintings. Strange Attractors is an interactive art system that displays beautiful fractal structures whose location on a large screen reflects the users' hand movements. Hidden Paintings is an interactive game in which two almostidentical versions of an artwork are displayed on a large screen and the movements of both hands of the users are superimposed as bounding boxes onto the display, allowing users to identify image regions in one version of the artwork that differ from the regions in the other. Experiments with twelve subjects show successful adoption of the proposed interactive art system and its two applications. © 2011 IADIS.

关键词： computer vision

来源：评论

学校读者我要写书评

暂无评论

Adaptive Framework for Online Deployment of Virtual Scenes on Heterogeneous Applications

Adaptive Framework for Online Deployment of Virtual Scenes o...

引用

The 2011 International Conference on Advanced Materials and Information Technology Processing(AMITP 2011)

作者： Qianyi Gu Visual Computing and Virtual Reality Key Laboratory of Sichuan Province College of Computer Science Sichuan Normal University

ISBN: (纸本)9783037851579

With emergence of online virtual reality applications, the 3D data of virtual scenes are available to heterogeneous end user devices with relatively limited computing power, resolution and transmission rate. Still, many virtual scenes created by expert developers are composed of complex 3D data models with huge number of geometry primitives and appearence elements. This complexity can cause a lot of problems when the scenes are deployed on the limited access devices. To address this issue, we propose a virtual scene adaptation framework which is able to perform the transformation of given complex 3D model into new forms with less geometric and appearance data. Through the framework, complex virtual scenes are connected with real-world semantics and are preprocessed with selected optimization strategies based on the semantic features matching client devices' capabilities before deployment.

关键词： Virtual Reality,Semantics,Ontology,Optimization,Deployment

来源：评论

学校读者我要写书评

暂无评论

Multimodal temporal panorama for moving vehicle detection and reconstruction

Multimodal temporal panorama for moving vehicle detection an...

引用

13th IEEE International Symposium on Multimedia, ISM 2011

作者： Wang, Tao Zhu, Zhigang Taylor, Clark N. Visual Computing Laboratory Department of Computer Science City College of New York New York NY 10031 United States Air Force Research Laboratory Wright-Patterson AFB 2241 Avionics Circle Dayton OH 45433-7302 United States

ISBN: (纸本)9780769545899

In this work, we present a multimodal temporal panorama (MTP) representation that synchronizes visual, motion, and acoustic signatures of moving vehicles in the time axis. The MTP representation includes two layers: a synopsis layer and a snapshot layer. The temporal synopsis consists of 1) a panoramic view image (PVI) to represent vehicles' presence, which is constructed from 1D vertical detecting lines of a selected column location of all video frames, 2) an epipolar plane image (EPI) to characterize their motion (speeds and directions), generated from 1D horizontal scanning lines along the vehicles' moving paths, and 3) an audio wave scroll for visualizing moving vehicles' acoustic signatures. The MTP synopsis not only synchronizes all the three modalities (visual, motion and acoustic) of the vehicles, but also provides information that can perform automatic detection tasks including moving vehicle visual detection, motion estimation, and acoustic signature retrieval. Then in the snapshot layer, the occlusion-free, motion-blur-free, and view-invariant reconstruction of each vehicle (with both shape and motion information) and its acoustic signatures (e.g. spectrogram) are embedded. The MTP provides a very effective approach to (semi-)automatically labeling the multimodal data of uncontrolled traffic scenes in real time for further vehicle classification, check-point inspection and traffic analysis. The concept of MTP may not be only limited to visual, motion and audio modalities, it could also be applicable to other sensing modalities that can obtain data in the temporal domain. © 2011 IEEE.

关键词： Vehicles

来源：评论

学校读者我要写书评

暂无评论

Perceptual influence of approximate visibility in indirect illumination

Perceptual influence of approximate visibility in indirect i...

引用

作者： Yu, Insu Cox, Andrew Kim, Min H. Ritschel, Tobias Grosch, Thorsten Dachsbacher, Carsten Kautz, Jan Department of Computer Science University College London Gower Street London WC1E 6BT United Kingdom Department of Computer Graphics MPI Informatik Campus E14 66123 Saarbrücken Germany Visual Computing Group Universität Stuttgart Germany

In this article we evaluate the use of approximate visibility for efficient global illumination. Traditionally, accurate visibility is used in light transport. However, the indirect illumination we perceive on a daily basis is rarely of high-frequency nature, as the most significant aspect of light transport in real-world scenes is diffuse, and thus displays a smooth gradation. This raises the question of whether accurate visibility is perceptually necessary in this case. To answer this question, we conduct a psychophysical study on the perceptual influence of approximate visibility on indirect illumination. This study reveals that accurate visibility is not required and that certain approximations may be introduced. © 2009 ACM.

关键词： Visibility

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：