ACM SIGGRAPH 2003 Papers最新文献_第10页

A data-driven reflectance model 数据驱动的反射率模型

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882343

W. Matusik

引用次数: 908

Simplifying complex environments using incremental textured depth meshes 使用增量纹理深度网格简化复杂环境

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882325

Andrew T. Wilson, Dinesh Manocha

引用次数: 49

Clustered principal components for precomputed radiance transfer 聚类主成分为预先计算的辐射转移

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882281

Peter-Pike J. Sloan, J. Hall, J. Hart, John M. Snyder

{"title":"Clustered principal components for precomputed radiance transfer","authors":"Peter-Pike J. Sloan, J. Hall, J. Hart, John M. Snyder","doi":"10.1145/1201775.882281","DOIUrl":"https://doi.org/10.1145/1201775.882281","url":null,"abstract":"We compress storage and accelerate performance of precomputed radiance transfer (PRT), which captures the way an object shadows, scatters, and reflects light. PRT records over many surface points a transfer matrix. At run-time, this matrix transforms a vector of spherical harmonic coefficients representing distant, low-frequency source lighting into exiting radiance. Per-point transfer matrices form a high-dimensional surface signal that we compress using clustered principal component analysis (CPCA), which partitions many samples into fewer clusters each approximating the signal as an affine subspace. CPCA thus reduces the high-dimensional transfer signal to a low-dimensional set of per-point weights on a per-cluster set of representative matrices. Rather than computing a weighted sum of representatives and applying this result to the lighting, we apply the representatives to the lighting per-cluster (on the CPU) and weight these results per-point (on the GPU). Since the output of the matrix is lower-dimensional than the matrix itself, this reduces computation. We also increase the accuracy of encoded radiance functions with a new least-squares optimal projection of spherical harmonics onto the hemisphere. We describe an implementation on graphics hardware that performs real-time rendering of glossy objects with dynamic self-shadowing and interreflection without fixing the view or light as in previous work. Our approach also allows significantly increased lighting frequency when rendering diffuse objects and includes subsurface scattering.","PeriodicalId":314969,"journal":{"name":"ACM SIGGRAPH 2003 Papers","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122838524","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: 314

Hierarchical mesh decomposition using fuzzy clustering and cuts 分层网格分解采用模糊聚类和切割

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882369

S. Katz, A. Tal

引用次数: 744

Smoke simulation for large scale phenomena 大尺度现象的烟雾模拟

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882335

Nick Rasmussen, Duc Quang Nguyen, William A. Geiger, Ronald Fedkiw

引用次数: 177

TreeJuxtaposer: scalable tree comparison using Focus+Context with guaranteed visibility tree并置:可扩展的树比较使用焦点+上下文与保证可见性

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882291

T. Munzner, François Guimbretière, S. Tasiran, Li Zhang, Yunhong Zhou

{"title":"TreeJuxtaposer: scalable tree comparison using Focus+Context with guaranteed visibility","authors":"T. Munzner, François Guimbretière, S. Tasiran, Li Zhang, Yunhong Zhou","doi":"10.1145/1201775.882291","DOIUrl":"https://doi.org/10.1145/1201775.882291","url":null,"abstract":"Structural comparison of large trees is a difficult task that is only partially supported by current visualization techniques, which are mainly designed for browsing. We present TreeJuxtaposer, a system designed to support the comparison task for large trees of several hundred thousand nodes. We introduce the idea of \"guaranteed visibility\", where highlighted areas are treated as landmarks that must remain visually apparent at all times. We propose a new methodology for detailed structural comparison between two trees and provide a new nearly-linear algorithm for computing the best corresponding node from one tree to another. In addition, we present a new rectilinear Focus+Context technique for navigation that is well suited to the dynamic linking of side-by-side views while guaranteeing landmark visibility and constant frame rates. These three contributions result in a system delivering a fluid exploration experience that scales both in the size of the dataset and the number of pixels in the display. We have based the design decisions for our system on the needs of a target audience of biologists who must understand the structural details of many phylogenetic, or evolutionary, trees. Our tool is also useful in many other application domains where tree comparison is needed, ranging from network management to call graph optimization to genealogy.","PeriodicalId":314969,"journal":{"name":"ACM SIGGRAPH 2003 Papers","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128283372","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: 338

Rhythmic-motion synthesis based on motion-beat analysis 基于动作-节拍分析的节奏-动作合成

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882283

Tae-Hoon Kim, Sang Il Park, Sung-yong Shin

引用次数: 214

Relighting with 4D incident light fields 用4D入射光场重新照明

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882315

Vincent Masselus, P. Peers, P. Dutré, Y. Willems

引用次数: 137

Twister: a space-warp operator for the two-handed editing of 3D shapes Twister:用于双手编辑3D形状的空间扭曲操作器

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882323

Ignacio Llamas, ByungMoon Kim, Joshua Gargus, J. Rossignac, Chris Shaw

{"title":"Twister: a space-warp operator for the two-handed editing of 3D shapes","authors":"Ignacio Llamas, ByungMoon Kim, Joshua Gargus, J. Rossignac, Chris Shaw","doi":"10.1145/1201775.882323","DOIUrl":"https://doi.org/10.1145/1201775.882323","url":null,"abstract":"A free-form deformation that warps a surface or solid may be specified in terms of one or several point-displacement constraints that must be interpolated by the deformation. The Twister approach introduced here, adds the capability to impose an orientation change, adding three rotational constraints, at each displaced point. Furthermore, it solves for a space warp that simultaneously interpolates two sets of such displacement and orientation constraints. With a 6 DoF magnetic tracker in each hand, the user may grab two points on or near the surface of an object and simultaneously drag them to new locations while rotating the trackers to tilt, bend, or twist the shape near the displaced points. Using a new formalism based on a weighted average of screw displacements, Twister computes in realtime a smooth deformation, whose effect decays with distance from the grabbed points, simultaneously interpolating the 12 constraints. It is continuously applied to the shape, providing realtime graphic feedback. The two-hand interface and the resulting deformation are intuitive and hence offer an effective direct manipulation tool for creating or modifying 3D shapes.","PeriodicalId":314969,"journal":{"name":"ACM SIGGRAPH 2003 Papers","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116270226","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: 125

Light scattering from human hair fibers 人类头发纤维的光散射

ACM SIGGRAPH 2003 Papers Pub Date : 2003-07-01 DOI: 10.1145/1201775.882345

Steve Marschner, H. Jensen, Mike Cammarano, Steven Worley, P. Hanrahan

引用次数: 318