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检索条件"任意字段=22nd Pacific Conference on Computer Graphics and Applications, PG 2014"

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22nd pacific conference on computer graphics and applications, pg 2014 - Short Papers

22nd Pacific Conference on Computer Graphics and Application...

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22nd pacific conference on computer graphics and applications, pg 2014

ISBN: (纸本)9783905674736

The proceedings contain 27 papers. The topics discussed include: incorporating fiber controls into FEM model for transversely isotropic materials;scene segmentation and understanding for context-free point clouds;visibility filtering for producing indirect illumination;integrating occlusion culling into LOD on GPU;surface mesh segmentation and reconstruction with smooth boundary curves;projecting points onto planar parametric curves by local biarc approximation;real-time collision detection with two-level spatial hashing on GPU;validation of our model for isotropic materials;and supplementary material for the paper ‘image palette: brushstroke synthesis-based style transfer’.

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Validation of our model for isotropic materials 22

Validation of our model for isotropic materials

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Jianping, Cai Feng, Lin Tsui, Lee Yong Kemao, Qian Soon, Seah Hock School of Computer Engineering Nanyang Technological University Singapore School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore

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Integrating occlusion culling into LOD on GPU 22

Integrating occlusion culling into LOD on GPU

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Peng, Chao Computer Science Department University of Alabama Huntsville United States Eurographics Publications Board

ISBN: (纸本)9783905674736

Real-time rendering of complex 3D models is still a very challenging task. Recently, GPU-based level-of-detail (LOD) approaches have been proposed to fast decrease the complexity of a 3D model, but applying only LOD approaches is usually not sufficient to achieve highly interactive rendering rate for the complex model that contains hundreds of millions of triangles. Visibility culling, especially occlusion culling, needs to be introduced to further reduce the amount of triangles being rendered at each frame. In this paper, we present a novel rendering approach that seamlessly integrates occlusion culling with the LOD approach in a unified scheme towards the GPU architecture. The result shows that the integration significantly reduces the complexity of the 3D model and satisfies the demands of both memory efficiency and performance. © The Eurographics Association 2014.

关键词： graphics processing unit

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Real-time collision detection with two-level spatial hashing on GPU 22

Real-time collision detection with two-level spatial hashing...

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Hong, Yang Wu, Wen Chen, Hui Department of Computer and Information Science Faculty of Science and Technology University of Macau China Department of Computer Science and Engineering The Chinese University of Hong Kong Hong Kong Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Science Beijing China

ISBN: (纸本)9783905674736

In this paper, a two-level parallel spatial hashing method is presented for real-time collision detection of deformable objects based on modern GPU architecture. The second-level of spatial hashing is used to improve the culling efficiency. Moreover, a novel encoding method on GPU is proposed to compensate the inflexibility of the GPU memory system. It can efficiently determine the colliding pairs of primitives between deformable objects. The experimental results show that our method can perform high culling efficiency with low memory cost. © The Eurographics Association 2014.

关键词： graphics processing unit

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Automatic 3D posing from 2D hand-drawn sketches 22

Automatic 3D posing from 2D hand-drawn sketches

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Gouvatsos, Alexandros Xiao, Zhidong Marsden, Neil Zhang, Jian J. Centre for Digital Entertainment National Centre for Computer Animation Bournemouth University United Kingdom Hibbert Ralph Animation United Kingdom

ISBN: (纸本)9783905674736

Inferring the 3D pose of a character from a drawing is a non-trivial and under-constrained problem. Solving it may help automate various parts of an animation production pipeline such as pre-visualisation. In this paper, a novel way of inferring the 3D pose from a monocular 2D sketch is proposed. The proposed method does not make any external assumptions about the model, allowing it to be used on different types of characters. The 3D pose inference is formulated as an optimisation problem and a parallel variation of the Particle Swarm Optimisation algorithm called PARAC-LOAPSO is utilised for searching the minimum. Testing in isolation as well as part of a larger scene, the presented method is evaluated by posing a lamp and a horse character. The results show that this method is robust and is able to be extended to various types of models. © The Eurographics Association 2014.

关键词： Drawing (graphics)

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Visual analysis of FPS gameplay data: From game design to player behavior 22

Visual analysis of FPS gameplay data: From game design to pl...

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Li, Quan Qu, Huamin Online Games Division NetEase Inc Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong

ISBN: (纸本)9783905674736

Gameplay data analysis has already become an important method for analyzing player behavior in games. Visualization is a promising way to explore and gain insight into the data. In this paper, we work closely with the game designers and user experience engineers to develop a visual analytic system to help them explore the gameplay data for a novel FPS (First-Person Shooter) game specific in the mainland China. We first come up with task specifications for such a system. After that, we propose a set of design goals for our system. VisFPS, is thus developed iteratively through a complete use-centered design process. The system is divided into two parts: Macro-View to deal with the overall gameplay data to discover patterns, and Micro-View to focus on a specific game match to recreate the game scene and use it to study player behavior and verify the game design intent. © The Eurographics Association 2014.

关键词： Game design

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Image palette: Brushstroke synthesis-based style transfer 22

Image palette: Brushstroke synthesis-based style transfer

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Miao, Zheng Zhang, Yan Zheng, Zhibin Sun, Zhengxing State Key Lab for Novel Software Technology Nanjing University China Department of Computer Science and Technology Nanjing University China

ISBN: (纸本)9783905674736

Painting style transfer is one kind technology where given the sample images with some specific art style, we can render the target images in the same style as the samples after some computation. In this paper we present a new approach of painting style transfer in which such a style transfer work is done by analogy with simulating the process of creation. We take the sample as palette where users can select arbitrary outlines or textures as the current input mode brush strokes. We then analyze brush strokes' style feature information and use such information for the style transfer and synthesis along the stroke curves learned from the specified area in target images to get the same painting style as the samples. The results show that the users can get a style-transferred personalized target image just by the given sample images and least interactions. © The Eurographics Association 2014.

关键词： Image processing

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Album quickview in comic-like layout via quartet analysis 22

Album quickview in comic-like layout via quartet analysis

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Zheng, Zhibin Zhang, Yan Miao, Zheng Sun, Zhengxing State Key Lab for Novel Software Technology Nanjing University Jiangsu Nanjing210093 China Department of Computer Science and Technology Nanjing University Jiangsu Nanjing210093 China

ISBN: (纸本)9783905674736

For clear summary and efficient search of images for album, which carries a story of life record, we propose a new approach for quickview of album in comic-like layout via quartet analysis. How to organize the images in album and in what way to display images in collage are two key problems for album quickview. For the first problem, we take the idea of model organization method based on quartet analysis to construct categorization tree to organize the images;while for the second problem, we utilize the topological structure of categorization tree to decompose it into multiple groups of images and extract representative image from each group for subsequent collage. For the collage part, we choose comic-like layout to present collage because comic provides a concise way for storytelling and it has variablitiy in layout styles, which is suitable for album summary. Experiments demonstrate that our method could organize the images effectively and present images in collage with diverse styles as well. © The Eurographics Association 2014.

关键词： Topology

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Projecting points onto planar parametric curves by local biarc approximation 22

Projecting points onto planar parametric curves by local bia...

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22nd pacific conference on computer graphics and applications, pg 2014

作者： Song, Hai-Chuan Shi, Kan-Le Yong, Jun-Hai Zhang, Sen School of Software Tsinghua University Beijing100084 China Department of Computer Science and Technology Tsinghua University Beijing100084 China Key Laboratory for Information System Security Ministry of Education of China Beijing100084 China Tsinghua National Laboratory for Information Science and Technology Beijing100084 China

ISBN: (纸本)9783905674736

This paper proposes a geometric iteration algorithm for computing point projection and inversion on surfaces based on local biarc approximation. The iteration begins with initial estimation of the projection of the prescribed test point. For each iteration, we construct a 3D biarc on the original surface to locally approximate the original surface starting from the current projection point. Then we compute the projection point for the next iteration, as well as the parameter corresponding to it, by projecting the test point onto this biarc. The iterative process terminates when the projection point satisfies the required precision. Examples demonstrate that our algorithm converges faster and is less dependent on the choice of the initial value compared to the traditional geometric iteration algorithms based on single-point approximation. © The Eurographics Association 2014.

关键词： Iterative methods

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Incorporating fiber controls into FEM model for transversely isotropic materials 22

Incorporating fiber controls into FEM model for transversely...

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22nd pacific conference on computer graphics and applications, pg 2014

ISBN: (纸本)9783905674736

Physically plausible deformable models based on continuum mechanics have been a hot topic in computer graphics for decades, and many models have been proposed to improve performance speed and stability. However, most of the existing models focus on isotropic materials, while elastic objects with complex anisotropic properties are less studied. Based on the observation that a large group of objects have specific internal structures (fibers) that determine their anisotropic behavior, we propose a fiber incorporated corotational FEM model that can approximate longitudinally anisotropic deformation. First, a fiber orientation field is used to establish local frames for each element;then, the orientation information is combined into the FEM model by adding local transformations on element stiffness matrices. This proposed model can provide a control for directable deformations, and yields realistic anisotropic deformations. Large deformations can be accommodated;meanwhile, with pre-computation it adds no computational cost to the existing corotational FEM model during simulation. Convincing experimental results and analytical comparisons are presented, together with an accompanying video demonstration. © The Eurographics Association 2014.

关键词： Fibers

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