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2011 12th International Conference on Computer-Aided Design and Computer Graphics

15-17 Sept. 2011

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  • [Front cover]

    Publication Year: 2011, Page(s): C1
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  • [Title page i]

    Publication Year: 2011, Page(s): i
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  • [Title page iii]

    Publication Year: 2011, Page(s): iii
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  • [Copyright notice]

    Publication Year: 2011, Page(s): iv
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  • Table of contents

    Publication Year: 2011, Page(s):v - x
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  • Preface

    Publication Year: 2011, Page(s): xi
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  • Conference organization

    Publication Year: 2011, Page(s):xii - xiii
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  • External Reviewers

    Publication Year: 2011, Page(s): xiv
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  • Invited Speakers

    Publication Year: 2011, Page(s):xv - xx
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB) | HTML iconHTML

    These keynote speeches discuss the following: illumination simulation due to various light sources and light scattering; interactive browsing of large-scale 3D repository and feature-preserving model simplification; centroidal Voronoi tessellations and optimal triangulations; geometric cleanability and drainability analysis; sketch-based interfaces for 3D shape modeling; and efficient algorithms f... View full abstract»

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  • A "Change 'n Play" Software Architecture Integrating CAD, CAE and Immersive Real-Time Environments

    Publication Year: 2011, Page(s):3 - 10
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (395 KB) | HTML iconHTML

    This paper presents a "change'n play" software architecture in order to realize user-centric aspects for, integrated engineering analysis tasks within immersive environments. The proposed architecture has been designed to enable conceptual simulations performed on an engineering mock-up. Major attention is given to the realization of modules and functionalities going far beyond traditional post-pr... View full abstract»

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  • Detecting Ambiguities in 3D Polygons with Self-Intersecting Projections

    Publication Year: 2011, Page(s):11 - 16
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3494 KB) | HTML iconHTML

    If a given 3D polygon has a self-intersecting projection which can bound several in equivalent disk-like surfaces in space, we say the polygon is ambiguous. In this paper, we propose a decomposition scheme for 3D polygons using Gauss diagrams from knot theory, and use it to detect ambiguities of 3D polygons. View full abstract»

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  • Automatic Generation of Canonical Views for CAD Models

    Publication Year: 2011, Page(s):17 - 24
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1861 KB) | HTML iconHTML

    Selecting the best views for 3D objects is useful for many applications. However, with the existing methods applied in CAD models, the results neither exhibit the 3D structures of the models fairly nor conform to human's browsing habits. In this paper, we present a robust method to generate the canonical views of CAD models, and the above problem is solved by considering the geometry and visual sa... View full abstract»

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  • Direct Rendering of Solid CAD Models on the GPU

    Publication Year: 2011, Page(s):25 - 32
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2382 KB) | HTML iconHTML

    Interactively rendering solid CAD models currently relies on tessellation of the models and passing of the tessellation onto the graphics card (GPU). Direct rendering on the GPU, without a tessellation preprocess, has many advantages -- pixel-level quality, less memory requirements, and less preprocessing, to name a few. However, one of the main problems with existing solutions for rendering solid... View full abstract»

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  • An Example-Driven Symbol Recognition Approach Based on Key Features in Engineering Drawings

    Publication Year: 2011, Page(s):33 - 37
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (243 KB) | HTML iconHTML

    In this paper, we present an example-driven symbol recognition algorithm based on its key features in CAD engineering drawings. When user provides an example of a specific symbol, the input symbol is analyzed and its features are extracted automatically. Based on the relation representation, the constrained tree with key feature priority can be established for this type of symbol. By this means, t... View full abstract»

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  • Knowledge Management for Product Development: A Review

    Publication Year: 2011, Page(s):38 - 43
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (311 KB) | HTML iconHTML

    Engineering product development is becoming increasingly collaborative and knowledge-intensive in today's industry. On one hand, the product development process comprises various tasks that involve extensive knowledge exchange and communication among geographically distributed teams. On the other hand, the product development teams usually reuse engineering knowledge from a vast well of previous d... View full abstract»

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  • DMML: A Design Thinking Process Modeling Language

    Publication Year: 2011, Page(s):44 - 48
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    Because design is an iterative and evolving process, recording and representing designer's thinking process plays an important role for design change and reuse. After giving a brief review of the previous related research, a design thinking process model is created for representing the design thinking process. Its knowledge structure consisting of design intent, design decision, design rationale a... View full abstract»

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  • Niche Improved Particle Swarm Optimization on Geometric Constraint Solving

    Publication Year: 2011, Page(s):49 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (158 KB) | HTML iconHTML

    Geometric constraint problem can be transformed to an optimization problem. We can solve the problem with niche improved particle swarm. Classical particle swarm optimization is likely to be trapped into local minima as well as premature. A niche improved particle swarm optimization (NIPSO) based on niche theory was developed. After the update of the particle velocity and position, the outlier par... View full abstract»

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  • Finite Element Mesh Editing through CAD Operations

    Publication Year: 2011, Page(s):53 - 60
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2230 KB) | HTML iconHTML

    In the process of numerical simulation, Finite Element Analysis (FEA) is commonly used for product design optimization. The product model has to be modified according to its associated optimization result obtained based on analysis, and the mesh model needs to be regenerated for analysis to verify the modification. In order to reduce the time for mesh regeneration, one effective way is to directly... View full abstract»

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  • An Accurate and Practical Camera Lens Model for Rendering Realistic Lens Effects

    Publication Year: 2011, Page(s):63 - 70
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7733 KB) | HTML iconHTML

    In this paper, an accurate and practical camera lens model is proposed to be applied in realistic rendering of lens-related effects. The optical modeling of this new model is firstly presented from two aspects: lens surface modeling and formulation of ray tracing equations. Then, a number of tunable models for controlling lens properties are introduced and combined together to determine overall im... View full abstract»

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  • Real-Time Volume Caustics with Image-Based Photon Tracing

    Publication Year: 2011, Page(s):71 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3917 KB) | HTML iconHTML

    Rendering of volume caustics in participating media is often expensive, even with different acceleration approaches. Basic volume photon tracing is used to render such effects, but rather slow due to its massive quantity of photons to be traced. In this paper we present an image-based volume photon tracing method for rendering volume caustics at real-time frame rates. Motivated by multi-image base... View full abstract»

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  • Importance-Driven Composition of Multiple Rendering Styles

    Publication Year: 2011, Page(s):79 - 86
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (19530 KB) | HTML iconHTML

    We introduce a non-uniform composition that integrates multiple rendering styles in a picture driven by an importance map. This map, either issued from saliency estimation or designed by a user, is introduced both in the creation of the multiple styles and in the final composition. Our approach accommodates a variety of stylization techniques, such as color desaturation, line drawing, blurring, ed... View full abstract»

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  • SIMD Friendly Ray Tracing on GPU

    Publication Year: 2011, Page(s):87 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    In this paper, we present a novel BVH tracing method on GPU, which can achieve better SIMD utilization than traditional method. In the traditional way, thread usually sticks to a ray until the closest hit is found. When the threads of the same warp follow very divergent ray paths, SIMD utilization drops significantly. The idea of our method is to redefine the way of work distribution by binding th... View full abstract»

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  • Fast Point Based Global Illumination

    Publication Year: 2011, Page(s):93 - 98
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    Point based rendering can simulate global illumination phenomenon fast and is widely used in movie production. This paper proposes a faster point based global illumination algorithm compared with the standard one. During our algorithm, the shading points generated by ray tracing are clustered in to groups. When doing point based rendering, the indirect illumination of each group's center point is ... View full abstract»

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  • A New Foveation Ray Casting Approach for Real-Time Rendering of 3D Scenes

    Publication Year: 2011, Page(s):99 - 102
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3464 KB) | HTML iconHTML

    This paper presents a real-time foveation rendering algorithm to simulate the gaze contingent vision of a 3Dscene. The novelty of our approach lies in two aspects, namely, an image-space adaptive sampling mask adhering to the Contrast Sensitivity Function (CSF) of the HVS, an image based multi-layer representation of the 3D scene constructed by depth peeling. We demonstrate high quality and perfor... View full abstract»

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  • Multi-GPU Compositeless Parallel Rendering Algorithm

    Publication Year: 2011, Page(s):103 - 107
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (981 KB) | HTML iconHTML

    Due to its high performance/cost ratio, a single PC equipped with multi-GPU is an attractive platform for large scale scene rendering and visualization. In this paper, we present a compositeless parallel rendering algorithm on shared memory multi-GPU system. Our algorithm is based on hybrid sort-first and sort-last render mode. By utilizing the DMA asynchronous transfer in modern video cards, we i... View full abstract»

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