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检索条件"任意字段=12th International Conference on Computer-Aided Design and Computer Graphics, CAD/Graphics 2011"

共 163 条记录，以下是51-60 订阅

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Figure out perspectives: Perceptually realistic avatar visualization

Figure out perspectives: Perceptually realistic avatar visua...

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12th IASTED international conference on computer graphics and Imaging, CGIM 2011

作者： Jan, Wojdziak Zavesky, Martin Kusch, Kerstin Wuttig, Daniel Franke, Ingmar S. Groh, Rainer Technische Universität Dresden Department of Computer Science Institute of Software and Multimedia Technology Dresden Germany

ISBN: (纸本)9780889868656

Projection of three-dimensional space onto a two-dimensional surface relies on the computer graphics camera based in design on the camera obscura. Geometrical limitations of this model lead to perspective distortions in wide-angle projections. Including the camera model, our approach is to involve the human perception in order to create a realistic spatial impression by a two-dimensional image. this paper discusses the influence of multi-perspective on three-dimensional computer graphics in virtual worlds based on the rules of perspective projection enhanced by characteristics of visual perception and techniques of Renaissance painting. the aim is to provide human-centered interfaces for an efficient and coherent communication of spatial information in virtual worlds to support avatar-mediated interaction with its need for correct depiction of human figures concerning proportion and orientation. To this end, we explain an object-based and introduce a camera-based computer graphics procedure to prevent projective distortions and misalignments.

关键词： three dimensional computer graphics

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A VR-based cad system

A VR-based CAD system

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4th international Working conference on the design of Information Infrastructure Systems for Manufacturing (DIISM 2000)

作者： Zheng, JM Chan, KW Gibson, I Univ Hong Kong Dept Mech Engn Hong Kong Hong Kong Peoples R China

ISBN: (纸本)0792373588

the performance of current computer-aided design (cad) systems is still far from the satisfaction of conceptual designers. this paper presents a VR-based cad system for conceptual design by applying VR interfaces and geometric modelling techniques to improve the human computer interaction. the system uses an electronic data glove as an input device so that conceptual designers are allowed to use hand gestures to conduct various geometric shape operations instead of depending solely on keyboard and 2D mouse. We employ the 3D GUIs for enhancing the gesture interface. the implemented shape modelling techniques offered by the system include: destruction, construction, and techniques for freeform feature creation and modification. the destructive techniques allow the user to arbitrarily sculpt an existing part by means of sculpting tools. the constructive techniques allow the user to assemble an object by using a collection of feature objects, by either adding or subtracting feature objects from the model. the system also offers several novel methods for facilitating intuitive modification of freeform curves and surfaces.

关键词： (VR) virtual reality geometric modelling computer graphics cad/CAM

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Fast computation of incident solar radiation from preliminary to final building design

Fast computation of incident solar radiation from preliminar...

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12th conference of international Building Performance Simulation Association Building Simulation 2011, BS 2011

作者： Jones, Nathaniel L. Greenberg, Donald P. Program of Computer Graphics Cornell University Ithaca NY United States

Accurate calculation of direct solar radiation with current methods is slow and frequently requires oversimplification of building geometry to obtain expedient performance simulations. this paper describes the use of a fast new method for calculating direct solar gains on architectural cad models at any stage in design. A pre-processing module computes direct incident solar radiation with high accuracy several orders of magnitude faster than common analytical approaches. the technique is illustrated using preliminary cad models of two existing buildings that are gradually made more complex through the addition of intricate louvered shading devices, foliage, and adjacent urban structures. Each refinement allows EnergyPlus to calculate much more accurate direct solar gain data with only minimal increase in pre-processing time and no effect on energy simulation time.

关键词： Architectural design

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Development of passive design tool using 3D-cad compatible thermal simulation -prediction of indoor radiation environment considering solar shading by surrounding trees and buildings

Development of passive design tool using 3D-CAD compatible t...

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12th conference of international Building Performance Simulation Association Building Simulation 2011, BS 2011

作者： Nakaohkubo, Kazuaki Hoyano, Akira Department of Architecture and Civil Engineering Graduate School of Science and Engineering Saga University Saga Japan Department of Environmental Science and Technology Interdisciplinary Graduate Science and Engineering Tokyo Institute of Technology Yokohama Japan

In this paper, a simulation tool for passive design considering indoor and outdoor radiation environment using a three-dimensional computer- aided design (3D-cad) system is developed. this tool predicts surface temperature distribution on indoor and outdoor surfaces of a building considering the spatial geometry, materials used, and solar shading. A radiation model algorithm with a high-resolution voxel model was developed to calculate surface temperature distribution and mean radiant temperature (MRT) distribution while considering the detailed spatial design. the results of the application of this developed tool to a passive design housing using direct heat gain and deciduous tree cover confirmed that this simulation tool is useful for evaluating the effect of passive design on the thermal environment at the design stage.

关键词： computer aided design

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A novel room re-layout design tool for preparedness of earthquake disaster using real-time physics simulation and force-feedback interface : Proposition of adopting real-Time physics simulation for architectural design verification process

A novel room re-layout design tool for preparedness of earth...

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12th computer-aided Architectural design Futures conference, CAADFutures 2007

作者： Ryu, Jaeho Ohno, Ryuzo Tokyo Institute of Technology Japan

ISBN: (纸本)9781402065279

the virtual reality (VR) generated by computer graphics (CG) has developed very rapidly in accordance with the rapid improvement of computer hardware and CG algorithms. Not only visual still images but also the representation of the behavior of virtual objects has became possible owing to real-time physics simulation, which can provide a high sense of presence to users. Adopting the real-time physics simulation and the force-feedback interface to the architectural design process in VR could make it more realistic by providing a sense of virtual objects such as the weight of the mass, tactile sensation, and interaction between virtual objects and users. As a pilot application of real-time physics simulation and the forcefeedback interface in the architectural field, we are developing an educational VR system for earthquake disaster preparedness through a room re-layout design process. © 2007 Springer.

关键词： Architectural design

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A Parallel GPU Implementation of the TimberWolf Placement Algorithm 12

A Parallel GPU Implementation of the <i>TimberWolf</i> Place...

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12th international conference on Information Technology: New Generations ITNG

作者： Al-Kawam, Ahmad Harmanani, Haidar M. Lebanese Amer Univ Dept Math & Comp Sci Byblos 14012010 Lebanon

ISBN: (纸本)9781479988280

GPUs have been gaining acceptance in the electronic design automation field as attractive platforms for implementing and accelerating computationally extensive applications. Researchers agree that it is critical that EDA algorithms exploit future platforms and explore the use of parallel algorithms as we move to the manycore era. this paper describes the implementation of the TimberWolf placement algorithm using CUDA and demonstrates the applicability of GPUs in accelerating electronic design automation tools. the algorithm has been implemented on a Xeon Workstation using C, and achieved a substantial acceleration on an Nvidia Tesla C2070 card.

关键词： CUDA VLSI design Automation VLSI Placement electronic design automation placement algorithm wolf acceleration computer-aided design Parallel algorithms Lumber and lumbering GRAPPER PICK UP graphics Processing Unit Platform ACCEPTANCE

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Concurrent design for Production (CDP): Materializing interface knowledge on a US residential construction project using computer aided design objects

Concurrent Design for Production (CDP): Materializing interf...

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14th Annual conference of the international Group for Lean Construction, IGLC-14

作者： Folkestad, James E. Construction Management Department Colorado State University Fort Collins CO 80523 United States

the concept that design is a social process is well established in the research literature. Following the tradition of ethnographic methods used to study design in context, this paper describes a 12-month research study conducted with a US residential homebuilder. the study utilizes the concurrent design process to elicit tacit interface knowledge and explicitly define it using 3D cad models. three-dimensional cad graphics were used as a concurrent design tool to provide visual representations of product and actor interfaces. More importantly, these tools created conversations that otherwise would not have taking place in traditional design process. Out of necessity, and following the spirit of the concurrent design process, the tool was modified to include intermediate production objects (IPOs) for transferring production details to field level workers. the concept of concurrent design for production (CDP) is introduced as an extension of concurrent design that provides a method for improving onsite construction processes.

关键词： computer aided design

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12th international conference on Intelligent Games and Simulation, GAME-ON 2011

12th International Conference on Intelligent Games and Simul...

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12th international conference on Intelligent Games and Simulation, GAME-ON 2011

ISBN: (纸本)9789077381649

this proceedings contains 13 papers. Game-On conference brings together researchers and games people in order to exchange ideas on programming and programming techniques, being beneficial to the gaming industry and academia. the conference will treat various aspects of computer-based games, from graphics, artificial intelligence, to robotics and mobile gaming issues. the key terms of this proceedings include game methodology, player motivations, game mechanics, player modelling, design phase in game, authoring tools, game graphics, professional players, user trajectories, data distribution, massively multiplayer online game angel, love online. © 2011 EUROSIS-ETI.

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conference organization

Conference organization

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IEEE international conference on computer-aided design and computer graphics

Provides a listing of current committee members and society officers.

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Manifold learning to address catastrophic forgetting 21

Manifold learning to address catastrophic forgetting

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12th Indian conference on computer Vision, graphics and Image Processing, ICVGIP 2021

作者： Akundi, Prathyusha Sivaswamy, Jayanthi International Institute of Information Technology Telangana Hyderabad India

ISBN: (纸本)9781450391276

A major challenge that deep learning systems face is the Catastrophic Forgetting (CF) phenomenon that is observed when fine-tuning is used to try and adapt a system to a new task or a sequence of datasets with different distributions. CF refers to the significant degradation in performance on the old task/dataset. In this paper, a novel approach is proposed to address CF in computer aided diagnosis (cad) system design in the medical domain. cad systems often need to handle a sequence of datasets collected over time from different sites with different imaging parameters/populations. the solution we propose is to move samples from all the datasets closer to a common manifold via a reformer at the front end of a cad system. the utility of this approach is demonstrated on two common tasks, namely segmentation and classification, using publicly available datasets. Results of extensive experiments show that manifold learning can yield about 74% improvement on an average in the reduction of CF over the baseline fine-tuning process and the state-of-the-art regularization based methods. the results also indicate that a Reformer when used in conjunction with the state-of-the-art regularization methods, has the potential to yield further improvement in CF reduction. © 2021 ACM.

关键词： Learning systems

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