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Ecce homology 05

Ecce homology

引用

International Conference on computer graphics and Interactive Techniques, SIGGRAPH 2005

作者： West, Ruth Burke, Jeff Kerfeld, Cheryl Mendelowitz, Eitan Holton, Thomas Lewis, J.P. Drucker, Ethan Yan, Weihong Lamont, Steve McQuade, Loren Lee, David National Center for Microscopy and Imaging Research UCSD United States UCLA HyperMedia Studio United States UCLA DOE Center for Genomics and Proteomics United States UCLA Department of Computer Science United States USC Computer Graphics and Immersive Technology Laboratory IMSC United States UCLA Bioinformatics User Facility United States

ISBN: (纸本)9781450378291

Ecce Homology, a physically interactive new-media work, visualizes genetic data as calligraphic forms. A novel computervision based user interface allows multiple participants, through their movement in the installation space, to select genes from the human genome for visualizing the Basic Local Alignment Search Tool (BLAST), a primary algorithm in comparative genomics.

关键词： User interfaces

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Metabolic visualization and intelligent shape analysis of the hippocampus

引用

International Conference on Computational Intelligence and Security, CIS 2005

作者： Choi, Yoo-Joo Kim, Jeong-Sik Kim, Min-Jeong Choi, Soo-Mi Kim, Myoung-Hee Institute for Graphic Interfaces Ewha-SK Telecom Building 11-1 Daehyun-Dong Seodaemun-Ku Seoul Korea Republic of Department of Computer Science and Engineering Ewha Womans University Daehyun-Dong Seodaemun-Ku Seoul Korea Republic of Center for Computer Graphics and Virtual Reality Ewha Womans University Daehyun-Dong Seodaemun-Ku Seoul Korea Republic of School of Computer Engineering Sejong University Seoul Korea Republic of Department of Computer Application Technology Seoul University of Venture and Information Seoul Korea Republic of

ISBN: (纸本)3540308199

This paper suggests a prototype system for visualization and analysis of anatomic shape and functional features of the hippocampus. Based on the result of MR-SPECT multi-modality image registration, anatomical and functional features of hippocampus are extracted from MR and registered SPECT images, respectively. The hippocampus is visualized in 3D by applying volume rendering to hippocampus volume data extracted from the MR image with color coded by registered SPECT image. In order to offer the objective and quantitative data concerning to the anatomic shape and functional features of the hippocampus, the geometric volume and the SPECT intensity histogram of hippocampus regions are automatically measured based on the MR and the registered SPECT image, respectively. We also propose a new method for the analysis of hippocampal shape using an integrated Octree-based representation, consisting of meshes, voxels, and skeletons. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Image analysis

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A system for real-time watercolour rendering

A system for real-time watercolour rendering

引用

computer graphics International

作者： J. Burgess G. Wyvill S.A. King Computer Graphics and Vision Research Group Department of Computer Science University of Otago New Zealand Computing & Mathematical Sciences Texas A and M Corpus Christi USA

We present a system for the real-time rendering of scenes to produce images like watercolour paintings. Our system uses a hybrid of object space rendering techniques and image plane post processing to attain extremely good results very quickly. We achieve this through graphics processing unit (GPU) programming, hardware accelerated shadow volumes, and the use of noise for various different tasks. We manage to circumvent problems found in both previous image space and object space methods by combining the two.

关键词： Real time systems Rendering (computer graphics) Painting Layout Paints computer graphics computer science Pigmentation computer vision Acceleration

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Variational Principles for Diffusion Weighted MRI Restoration and Segmentation

Variational Principles for Diffusion Weighted MRI Restoratio...

引用

Canadian Conference on computer and Robot Vision, CRV

作者： B.C. Vemuri Center of Vision Graphics and Medical Imaging Department of Computer & Information Science & Engineering University of Florida Gainesville FL USA

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Course notes SIGGRAPH 2005 course 10: Realistic materials in computer graphics July 31, 2005

Course notes SIGGRAPH 2005 course 10: Realistic materials in...

引用

ACM SIGGRAPH 2005 International Conference on computer graphics and Interactive Techniques, SIGGRAPH 2005

作者： Lensch, Hendrik P. A. Goesele, Michael Chuang, Yung-Yu Hawkins, Tim Marschner, Steve Matusik, Wojciech Mueller, Gero Stanford University Computer Graphics Laboratory Gates Bldg. 3B-364 353 Serra Mall StanfordCA94305 United States MPI Informatik Stuhlsatzenhausweg 85 Saarbruecken66123 Germany National Taiwan University Department of Computer Science and Information Engineering No.1 Sec. 4 Roosevelt Road Taipei106 Taiwan University of Southern California Institute for Creative Technologies 13274 Fiji Way Marina del ReyCA90292 United States Cornell University Computer Science Department 5159 Upson Hall IthacaNY14853 United States 201 Broadway CambridgeMA02139 United States Universität Bonn Institute for Computer Science II Roemerstr. 164 Bonn53117 Germany

A number of techniques in recent years have demonstrated photoreal relightable image based models. In particular, a number of efforts have focussed on capturing images under many illumination conditons, allowing for this relighting to be performed directly from captured data without making simplifying assumptions about the material properties or light transport within the scene. These approaches can often be considered attempts at characterizing or measuring the reflectance field of the scene, a prospect which remains elusive given the high dimensionality of the reflectance field.

关键词： Reflection

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A multi-layered approach to optical burst-switched based grids

A multi-layered approach to optical burst-switched based gri...

引用

International Conference on Broadband Networks (BroadNets)

作者： F. Farahmand M. De Leenheer P. Thysebaert B. Volckaert F. De Turck B. Dhoedt P. Demeestert J.P. Jue Department of Computer Electronics and Graphics Technology Central Connecticut State University Gent Belgium Department of Computer Electronics and Graphics Technology Central Connecticut State University Dept. of Electrical Engineering and Computer Science The University of Texas at Dallas Department of Information Technology Ghent University-IBBT-IMEC Gent Belgium Department of Electrical Engineering and Computer Science University of Texas Dallas Gent Belgium Dept. of Information Technology Ghent University - IBBT - IMEC Gaston Crommenlaa Belgium

In this paper we consider implementing optical burst switching as an alternative approach to meet computationally intensive grid applications. Such architecture has been referred to as grid-over-OBS (GoOBS). We first present a unique layered architecture for grid-over-OBS and position OBS protocol stack within the framework of the layered grid architecture. Then, we present a generic framework for anycast routing in the context of GoOBS when requests don't have explicit addresses and they can be serviced by any appropriate grid resource. We develop several algorithms to support an casting when only a single copy of a request is transmitted. Through simulation analysis, we show the performance of our anycast algorithms and compare them with the shortest-path unicast routing in which all jobs have specific addresses. In our performance analysis, we focus on average end-to-end delay and blocking probability of requests

关键词： computer architecture Routing Performance analysis Optical burst switching computer applications Grid computing Optical computing Protocols Context-aware services Casting

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ArcTrees: Visualizing relations in hierarchical data

ArcTrees: Visualizing relations in hierarchical data

引用

7th Joint Eurographics - IEEE VGTC Symposium on Visualization, VisSym 2005

作者： Neumann, Petra Schlechtweg, Stefan Carpendale, Sheelagh Department of Computer Science University of Calgary 2500 University Drive NW CalgaryABT2N 1N4 Canada Department of Simulation and Graphics Otto-von-Guericke University of Magdeburg Universitätsplatz 2 MagdeburgD-39106 Germany

ISBN: (纸本)3905673193

In this paper we present, ARCTREES, a novel way of visualizing hierarchical and non-hierarchical relations within one interactive visualization. Such a visualization is challenging because it must display hierarchical information in a way that the user can keep his or her mental map of the data set and include relational information without causing misinterpretation. We propose a hierarchical view derived from traditional Treemaps and augment this view with an arc diagram to depict relations. In addition, we present interaction methods that allow the exploration of the data set using Focus+Context techniques for navigation. The development was motivated by a need for understanding relations in structured documents but it is also useful in many other application domains such as project management and calendars. © The Eurographics Association 2005.

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A closed-loop rate-based contention control for optical burst switched networks

A closed-loop rate-based contention control for optical burs...

引用

IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)

作者： F. Farahmand Qiong Zhang J.P. Jue Department of Computer Electronics and Graphics Technology Central Connecticut State University New Britain CT USA Mathematical Sciences and Applied Computing Arizona State University USA Department of Computer Science University of Texas Dallas Richardson TX USA

In this paper we describe a rate-based OBS network architecture in which core switch nodes send explicit messages to edge nodes requesting them to reduce their transmission rate on congested links. Within this framework, we introduce a new contention avoidance mechanism called proportional control algorithm with explicit reduction request (PCwER). Through source rate control, PCwER proactively attempts to prevent the network from entering the congestion state. Basic building blocks and performance trade-offs of PCwER are the main focus of this paper. In addition, through a simple fluid model we analyze the characteristics of the algorithm. Our simulation results show that the proposed contention avoidance techniques improve the network utilization and reduce the packet loss probability

关键词： Optical control Optical fiber networks Optical feedback Optical network units Optical packet switching Optical losses Optical buffering computer networks Optical computing Switches

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Data burst grooming in optical burst-switched networks

Data burst grooming in optical burst-switched networks

引用

International Conference on Broadband Networks (BroadNets)

作者： F. Farahmand Q. Zhang J.P. Jue Department of Computer Electronics and Graphics Technology Central Connecticut State University New Britain CT USA Mathematical Sciences and Applied Computing Arizona State University USA Department of Computer Science University of Texas Dallas Richardson TX USA

In this paper we address the problem of data burst grooming in optical burst-switched (OBS) networks. In OBS networks IP packets with the same edge node destination are assembled into larger packets called data bursts. Depending on the core node's switching technology, data bursts are required to have a minimum length. On the other hand, each IP packet in a burst has a time delay constraint, called maximum end-to-end delay, which determines the upper time limit before which the packet must reach its destination. Thus, a data burst cannot wait indefinitely until sufficient number of IP packets are assembled and the minimum burst length requirement is met. In order to satisfy the packet maximum end-to-end delay requirement, many bursts will be timed out and released before they reach the minimum length requirement. Under such circumstances, padding overhead must be added to these short bursts, called sub-bursts. Excessive padding results in high overhead and high data burst blocking probability. One approach to minimize the amount of padding overhead, while maintaining the end-to-end delay requirement of IP packets, is to groom multiple sub-bursts together. That is, sub-bursts with different destinations are aggregated together at the edge node and transmitted as a single burst until they are separated at some downstream node. In this paper we present an edge node architecture enabling burst grooming capability. We also develop two basic grooming approaches, namely no-routing-overhead (NoRO) and minimum-total-overhead (MinTO). Through a comprehensive simulation study we show that, in general, our proposed grooming algorithms can significantly improve the performance compared to the case of no grooming. However, careful considerations must be given to network loading condition and the number of sub-bursts allowed to be groomed together. We show that although simple greedy algorithms can reduce network overhead, they may alter the traffic characteristics and increase it

关键词： Intelligent networks Optical fiber networks Assembly Optical network units Delay effects Optical packet switching computer networks Optical computing Telecommunication traffic Bandwidth

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Ship hull fitting using NURBS

Ship hull fitting using NURBS

引用

International Conference on computer graphics, Imaging and Visualization, CGIV

作者： A.S. Wen S.M.H. Shamsuddin Y. Samian Department of Graphics and Multimedia Faculty of Computer Science and Information System Universiti Teknologi Malaysia Malaysia Department Of Marine Technology Faculty of Mechanical Engineering Universiti Teknologi Malaysia Malaysia

Ship hull form module is the main module in ship design. The problem of creating fair ship hull surface is of major importance in computer aided ship design environment. The fairness of these surfaces is generally considered a subjective notion depending on the judgment of the designers (e.g. visually pleasing, devoid of unnecessary bumps or wiggles, satisfying certain continuity requirements). One of the restriction in ship hull design is that the existing details of a ship design on paper or a ship that already been constructed physically couldn't be reconstructed accurately and concisely in a ship hull design software. This problem can take on many different characteristics, depending on the goal of the reconstruction, the origin of the offset, and tools or methods available to tackle the job. All of these must be taken into account in developing the best approach to solving the problem in the most efficient manner. In this research, the implementation of NURBS method is used because it brings the most convincing results.

关键词： Design automation Surface fitting Curve fitting Computational geometry

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