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Proceedings of the 2001 Asia and South pacific Design Automation conference

作者： Chanik Park Sungchan Kim Soonhoi Ha Computer Science and Engineering Seoul National University Seoul 151-742 Korea

ISBN: (纸本)9780780366343

3D graphics is becoming an important application area together with multimedia applications. The dynamic behavior of 3D graphics application brings new challenges for system level specification and synthesis methodologies. Although existing dataflow models are successfully used for DSP system design, they are not sufficient to deal with 3D graphics algorithms since they lack in global state management and dynamic behavior handling. In this paper, we propose an extended synchronous piggybacked dataflow model with dynamic constructs for representing 3D graphics algorithm. We also present implementation techniques for software and hardware synthesis from the specification. With a simple 3D graphics pipeline, we show the novelty and usefulness of the proposed specification model.

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applications of Graph Theory

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PROCEEDINGS OF THE IEEE 2018年第5期106卷 784-786页

作者： Adali, Tuelay Ortega, Antonio Univ Maryland Baltimore Cty Baltimore MD 21228 USA Univ Maryland Baltimore Cty Dept Comp Sci & Elect Engn Baltimore MD 21228 USA Univ Southern Calif Elect Engn Dept Los Angeles CA USA USC EE Syst Los Angeles CA USA USC Signal & Image Proc Inst Los Angeles CA USA

Graph-theoretical methods are being increasingly used in areas of interest within the IEEE and beyond. Graphs are mathematical abstractions that can be used to represent networks of various types: physical (e.g., the internet or electrical networks), biological (e.g., brain networks), or social (e.g., online social networks). Furthermore, graphs can provide tools for flexible representation of data sets in which data points have irregular positions with respect to each other. Common examples of this include data sets acquired by a sensor network, where uniform sensor placement may not be possible, or machine learning data sets, where training samples are not uniformly distributed in feature space. In some instances, a graph representation arises as a natural way to describe the problem, while in other areas, e.g., image processing, they are being used to develop powerful, content-dependent alternatives to conventional processing tools.

关键词： Special issues and sections Graph theory computer graphics Image processing Machine learning Training data Combinatorial mathematics

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Reconfigurable computing: Productivity and performance

Reconfigurable computing: Productivity and performance

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Asilomar conference on Signals, Systems & computers

作者： David B. Thomas J. G. F. Coutinho Wayne Luk Department of Computing Imperial College London UK

ISBN: (纸本)9781424458257;9781424458271

Reconfigurable computing technologies have been used in a variety of computer systems, from supercomputers to portable embedded systems. However, developing applications on reconfigurable computers still appears to be more difficult than developing applications on conventional computers and on graphics processing units. This paper suggests some reasons about why this could be the case, and proposes a number of solutions designed to meet the challenge of improving design productivity and performance for reconfigurable computing systems.

关键词： Productivity Field programmable gate arrays Hardware Embedded computing Portable computers Application software Programming profession computer applications Concurrent computing Parallel processing

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Implementation of a Java based volume browser for 3D volume graphics

Implementation of a Java based volume browser for 3D volume ...

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IEEE Region 10 International conference TENCON

作者： Oh Chee Siong E.C. Prakash School of Applied Science Nanyang Technological University Singapore

Facilitating the remote visualization of volume data, where data generated is generated at one source and visualized from any source has been the dream of researchers. This paper describes the development of a volume rendering kernel that has been developed using Java. This kernel generates volume rendered images from 3D voxel volumes. The kernel is small so it can be easily implemented, it uses Java and hence can run on any machine on the network. We describe the implementation and give examples that demonstrate the feasibility of our system for remote visualization that can be efficiently used for a wide range of applications.

关键词： Java graphics Data visualization Rendering (computer graphics) Web server Internet Kernel Animation Network servers Displays

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Efficient region-selective subdivision for 3-D meshes

Efficient region-selective subdivision for 3-D meshes

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Asilomar conference on Signals, Systems & computers

作者： Wenlong Dong Jiankun Li C.-C.J. Kuo Integrated Media Systems Center and Department of Electrical Engineering-Systems University of Southern California Los Angeles CA USA

An efficient region-selective subdivision algorithm for 3-D meshes is proposed in this research, The use of subdivision surfaces for constructing and representing 3-D objects has been introduced in computer graphics and related fields. As an interpolating subdivision scheme on triangular meshes, the modified butterfly subdivision (MBS) algorithm is feasible for many applications such as progressive rendering and object shape-preserving. To further improve MBS, we adopt efficient refinement criteria based on the viewing frustum, the surface orientation, the screen-space visibility error and the local mesh flatness. We also provide a set of subdivision rules to model some natural sharp features such as local creases, cusps and darts. By choosing appropriate edges as being sharp, the refined meshes attain desired sharp features in edge regions, while maintaining the same order of smoothness as other subdivision algorithms elsewhere.

关键词： computer graphics Topology Rendering (computer graphics) Solid modeling Visualization Shape

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A logarithmic approach to energy-efficient GPU arithmetic for mobile devices

A logarithmic approach to energy-efficient GPU arithmetic fo...

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Asilomar conference on Signals, Systems & computers

作者： Miguel Lastras Behrooz Parhami Department of Electrical and Computer Engineering University of California Santa Barbara CA USA

ISBN: (纸本)9781479923915

Graphic processing units (GPUs) have emerged as useful components in the realization of high-performance and cost-effective digital systems for numerically intensive applications, from simple personal devices to large-scale supercomputers. In this paper, we consider GPUs that incorporate energy-efficient logarithmic arithmetic units. After analyzing numerical errors arising from such an implementation scheme, we present a simple fine-tuning of the design to reduce the worst-case error.

关键词： graphics processing units Hardware Energy efficiency Mobile handsets graphics computers

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The intersection of two ringed surfaces

The intersection of two ringed surfaces

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pacific conference on computer graphics and applications

作者： Hee-Seok Heo Sung Je Hong Myung-Soo Kim G. Elber Department of Computer Science Postech Pohang South Korea School of Computer Science and Eng Seoul National University Seoul South Korea Department of Computer Science Technion-Israel Institute of Technology Haifa Israel

ISBN: (纸本)0769508685

Presents an efficient and robust algorithm to compute the intersection curve of two ringed surfaces, each being the sweep /spl cup//sub u/C/sup u/ generated by a moving circle. Given two ringed surfaces /spl cup//sub u/C/sub 1//sup u/ and /spl cup//sub v/C/sub 2//sup v/, we formulate the condition C/sub 1//sup u//spl cap/C/sub 2//sup v//spl ne/O (i.e. that the intersection of the two circles C/sub 1//sup u/ and C/sub 2//sup v/ is non-empty) as a bivariate equation /spl lambda/(u,v)= 0 of relatively low degree. Except for some redundant solutions and degenerate cases, there is a rational map from each solution of /spl lambda/(u,v)=0 to the intersection point C/sub 1//sup u//spl cap/C/sub 2//sup v/. Thus, it is trivial to construct the intersection curve once we have computed the zero-set of /spl lambda/(u,v)=0. We also analyze some exceptional cases and consider how to construct the corresponding intersection curves.

关键词： Equations Irrigation computer science Robustness Shape Solids Ray tracing

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A synthetic environment system for planning, education and data visualization

A synthetic environment system for planning, education and d...

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Asilomar conference on Signals, Systems & computers

作者： J. Sadowsky D.M. Weintraub I.E. Feldberg S.D. Diamond Applied Physics Laboratory Johns Hopkins University Laurel MD USA

An inexpensive workstation that creates an immersive environment for several people to see and manipulate computer generated 3D graphic objects would have many innovative and important applications, such as planning and brainstorming (3D viewgraphs), education (3D chalk-board), and data visualization. We have been developing a PC-based system with a multimedia architecture. Each participant uses a head-mounted display with a video camera at each eye, and mixes the live video with computer generated graphics to create a heads-up display of the common scene with added virtual objects. We present the architecture, design problems and solutions, and application experiences.< >

关键词： computer displays computer science education computer graphics Application software computer architecture Two dimensional displays Workstations Data visualization Multimedia systems Cameras

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GPU design space exploration: NN-based models

GPU design space exploration: NN-based models

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IEEE pacific Rim conference on Communications, computers and Signal Processing

作者： Ali Jooya Nikitas Dimopoulos Amirali Baniasadi Department of Electrical and Computer Engineering University of Victoria Victoria B.C. Canada

ISBN: (纸本)9781467377898

Different applications have different memory and computational demands. Therefore, obtainable performance and energy efficiency on a GPU depends on how well the GPU resources and application demands are balanced. In this study, we are presenting a Neural Network based predictor to model power and performance of GPGPU applications. The proposed model accurately predicts power and performance for most of the configurations in the design space with average prediction error of less than 6.5%. For configurations with high prediction errors, we have developed an outlier detection method to filter them out from the output of the model. The proposed filter captures most of the extreme outliers and improves the accuracy of the model.

关键词： graphics processing units Predictive models Benchmark testing Artificial neural networks Training Registers

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Interactive ray tracing on reconfigurable SIMD MorphoSys

Interactive ray tracing on reconfigurable SIMD MorphoSys

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Asia and South pacific Design Automation conference

作者： H. Du A. Sanchez-Elez N. Tabrizi N. Bagherzadeh M.L. Anido M. Fernandez Electrical and Computer Engineering University of California Irvine CA USA Universidad Complutense de Madrid Spain NCE Federal University of Rio de Janeiro Brazil

ISBN: (纸本)0780376595

MorphoSys is a reconfigurable SIMD architecture. In this paper, a BSP-based ray tracing is gracefully mapped onto MorphoSys. The mapping highly exploits ray-tracing parallelism. A straightforward mechanism is used to handle irregularity among parallel rays in BSP. To support this mechanism, a special data structure is established, in which no intermediate data has to be saved. Moreover, optimizations such as object reordering and merging are facilitated. Data starvation is avoided by overlapping data transfer with intensive computation so that applications with different complexity can be managed efficiently. Since MorphoSys is small in size and power efficient, we demonstrate that MorphoSys is an economic platform for 3D animation applications on portable devices.

关键词： Ray tracing Hardware graphics Layout Lighting Costs Clocks Frequency Engines computer architecture

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