15th Pacific Conference on Computer Graphics and Applications (PG'07)最新文献

Contour Correspondence via Ant Colony Optimization 基于蚁群优化的轮廓对应

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.56

O. V. Kaick, G. Hamarneh, Hao Zhang, P. Wighton

引用次数: 42

Exposure Fusion 接触融合

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.17

T. Mertens, J. Kautz, F. Reeth

引用次数: 566

Visualization and Simulation of Near-Body Hydrodynamics Using the Semi-Lagrangian Fluid Simulation Method 基于半拉格朗日流体仿真方法的近体流体动力学可视化与仿真

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.58

Duc-Thang Truong, Y. Chow, A. Fang

{"title":"Visualization and Simulation of Near-Body Hydrodynamics Using the Semi-Lagrangian Fluid Simulation Method","authors":"Duc-Thang Truong, Y. Chow, A. Fang","doi":"10.1109/PG.2007.58","DOIUrl":"https://doi.org/10.1109/PG.2007.58","url":null,"abstract":"Efficient numerical techniques developed in the field of computer graphics are able to simulate compellingly realistic simulations of interactions between solids and fluids. These techniques are less used for engineering applications due to errors inherent in the systemic approximations. The errors, manifesting as excessive damping, are expected to change the nature of steady-state fields and nullify the typical engineering static flow analysis. On the other hand, near-body solid/fluids interaction are affected to a lesser degree since errors originating from dissipation are more severe when accumulated over time. Although it is generally not possible to numerically validate unsteady, high-velocity vector fields, our investigations show that near- body solid/fluid dynamics converges with respect to parametric refinements. Though far from a correctness proof, the numerical convergence of near-body quantities suggests the applicability of the method to certain classes of analysis and visualization where near-body characteristics are of greater concern. This article applies the semi-Lagrangian stable fluids method to biomechanical hydrodynamics visualization. The near-body surface dynamics provide meaningful information for rendering visuals that are intuitive to the streamlined flow characteristics surrounding the body. The techniques are applied to the visualization of active and passive resistive forces on the body in a video-based capture of an immersed dolphin kick.","PeriodicalId":376934,"journal":{"name":"15th Pacific Conference on Computer Graphics and Applications (PG'07)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128478106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Exact Evaluation of Non-Polynomial Subdivision Schemes at Rational Parameter Values 有理参数值下非多项式细分方案的精确求值

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.8

S. Schaefer, J. Warren

{"title":"Exact Evaluation of Non-Polynomial Subdivision Schemes at Rational Parameter Values","authors":"S. Schaefer, J. Warren","doi":"10.1109/PG.2007.8","DOIUrl":"https://doi.org/10.1109/PG.2007.8","url":null,"abstract":"In this paper, we describe a method for exact evaluation of a limit mesh defined via subdivision on a uniform grid of any size. Other exact evaluation technique either restrict the grids to have subdivision sampling and are, hence, exponentially increasing in size or make assumptions about the underlying surface being piecewise polynomial (Stam's method is a widely used technique that makes this assumption). As opposed to Stam's technique, our method works for both polynomial and non-polynomial schemes. The values for this exact evaluation scheme can be computed via a simple system of linear equation derived from the scaling relations associated with the scheme or, equivalently, as the dominant left eigenvector of an upsampled subdivision matrix associated with the scheme. To illustrate one possible application of this method, we demonstrate how to generate adaptive polygonalizations of a non-polynomial quad-based subdivision surfaces using our exact evaluation method. Our method guarantees a water-tight tessellation no matter how the surface is sampled and is quite fast. We achieve tessellation rates of over 33.5 million triangles/ second using a CPU implementation.","PeriodicalId":376934,"journal":{"name":"15th Pacific Conference on Computer Graphics and Applications (PG'07)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116365013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Efficient Spherical Harmonics Representation of 3D Objects 三维物体的高效球面谐波表示

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.39

M. Mousa, R. Chaine, S. Akkouche, Eric Galin

引用次数: 19

Computer-Generated Papercutting 计算机生成剪纸艺术

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.10

Jie Xu, C. Kaplan, Xiaofeng Mi

引用次数: 49

Genus Oblivious Cross Parameterization: Robust Topological Management of Inter-Surface Maps 属无关交叉参数化:曲面间映射的鲁棒拓扑管理

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.42

Janine Bennett, Valerio Pascucci, K. Joy

{"title":"Genus Oblivious Cross Parameterization: Robust Topological Management of Inter-Surface Maps","authors":"Janine Bennett, Valerio Pascucci, K. Joy","doi":"10.1109/PG.2007.42","DOIUrl":"https://doi.org/10.1109/PG.2007.42","url":null,"abstract":"We consider the problem of generating a map between two triangulated meshes, M and M', with arbitrary and possibly differing genus. This problem has rarely been tackled in its generality. Early schemes considered only topological spheres. Recent algorithms allow inputs with an arbitrary number of tunnels but require M and M' to have equal genus, mapping tunnel to tunnel. Other schemes which allow more general inputs are not guaranteed to work and the authors do not provide a characterization of the input meshes that can be processed successfully. Moreover, the techniques have difficulty dealing with coarse meshes with many tunnels. In this paper we present the first robust approach to build a map between two meshes of arbitrary unequal genus. We also provide a simplified method for setting the initial alignment between M and M', reducing reliance on landmarks and allowing the user to select \"landmark tunnels\" in addition to the standard landmark vertices. After computing the map, we automatically derive a continuous deformation from M to M' using a variational implicit approach to describe the evolution of non-landmark tunnels. Overall, we achieve a cross parameterization scheme that is provably robust in the sense that it can mapM toM' without constraints on their relative genus or on the density of the triangulation with respect to the number of tunnels. To demonstrate the practical effectiveness of our scheme we provide a number of examples of inter-surface parameterizations between meshes of different genus and shape.","PeriodicalId":376934,"journal":{"name":"15th Pacific Conference on Computer Graphics and Applications (PG'07)","volume":"1987 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125476010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Visualisation of Implicit Algebraic Curves 隐式代数曲线的可视化

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.32

L. Alberti, B. Mourrain

引用次数: 23

Point-Based Minkowski Sum Boundary 基于点的Minkowski和边界

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.49

Jyh-Ming Lien

引用次数: 70

Faceting Artifact Analysis for Computer Graphics 面向计算机图形学的面形伪影分析

15th Pacific Conference on Computer Graphics and Applications (PG'07) Pub Date : 2007-10-29 DOI: 10.1109/PG.2007.61

Lijun Qu, G. Meyer

引用次数: 2