ACM SIGGRAPH ASIA 2008 courses最新文献

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Multiperspective modeling, rendering, and imaging 多视角建模、渲染和成像
ACM SIGGRAPH ASIA 2008 courses Pub Date : 2008-12-10 DOI: 10.1145/1508044.1508094
Jingyi Yu, L. McMillan, P. Sturm
{"title":"Multiperspective modeling, rendering, and imaging","authors":"Jingyi Yu, L. McMillan, P. Sturm","doi":"10.1145/1508044.1508094","DOIUrl":"https://doi.org/10.1145/1508044.1508094","url":null,"abstract":"A perspective image represents the spatial relationships of objects in a scene as they appear from a single viewpoint. In contrast, a multiperspective image combines what is seen from several viewpoints into a single image. Despite their incongruity of view, effective multiperspective images are able to preserve spatial coherence and can depict, within a single context, details of a scene that are simultaneously inaccessible from a single view, yet easily interpretable by a viewer. In computer vision, multiperspective images have been used for analyzing structure revealed via motion and generating panoramic images with a wide field-of-view using mirrors. In this STAR, we provide a practical guide on topics in multiperspective modeling and rendering methods and multiperspective imaging systems. We start with a brief review of multiperspective image techniques frequently employed by artists such as the visual paradoxes of Escher, the Cubism of Picasso and Braque, and multiperspective panoramas in cel animations. We then characterize existing multiperspective camera models, with an emphasis on their underlying geometry and image properties. We demonstrate how to use these camera models for creating specific multiperspective rendering effects. Furthermore, we show that many of these cameras satisfy the multiperspective stereo constraints and we demonstrate several multiperspective imaging systems for extracting 3D geometry for computer vision. The participants learn about topics in multiperspective modeling and rendering for generating compelling pictures for computer graphics and in multiperspective imaging for extracting 3D geometry for computer vision. We hope to provide enough fundamentals to satisfy the technical specialist without intimidating curious digital artists interested in multiperspective images. The intended audience includes digital artists, photographers, and computer graphics and computer vision researchers using or building multiperspective cameras. They will learn about multiperspective modeling and rendering, along with many real world multiperspective imaging systems.","PeriodicalId":202243,"journal":{"name":"ACM SIGGRAPH ASIA 2008 courses","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126758240","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: 33
Seeing in 3D 看3D
ACM SIGGRAPH ASIA 2008 courses Pub Date : 2008-12-10 DOI: 10.1145/1508044.1508116
Bob Parslow, G. Wyvill
{"title":"Seeing in 3D","authors":"Bob Parslow, G. Wyvill","doi":"10.1145/1508044.1508116","DOIUrl":"https://doi.org/10.1145/1508044.1508116","url":null,"abstract":"Most people, even among technical draftsmen, designers and computer graphics programmers, find it very difficult to visualize 3D shapes well enough to reason about them. We demonstrate the problem and take participants through a series of exercises whereby they can begin to acquire this important practical skill. \"Stand a cube on its corner. What is the shape of a horizontal cross-section taken at half the height of this object?\" About four percent of people can reason about 3D space well enough to answer this question easily and with confidence. Most of us enter a state of panic when confronted by 3D problems. Yet it is possible to train yourself to think and visualize in 3D. This course helps attendees start thinking in 3D. Once they have the basic principles, they can develop the skill independently.","PeriodicalId":202243,"journal":{"name":"ACM SIGGRAPH ASIA 2008 courses","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131539908","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: 3
There can be only one: independent animation production for the lonely 只能有一个:为孤独而制作的独立动画
ACM SIGGRAPH ASIA 2008 courses Pub Date : 2008-12-10 DOI: 10.1145/1508044.1508117
Kristen Palana, Steve Rittler
{"title":"There can be only one: independent animation production for the lonely","authors":"Kristen Palana, Steve Rittler","doi":"10.1145/1508044.1508117","DOIUrl":"https://doi.org/10.1145/1508044.1508117","url":null,"abstract":"This beginner's course is aimed at the ambitious loner seeking to create independent animation without the luxury of a large budget or staff. Participants will learn professional production procedure and organization, geared to take their piece from concept to creation to festival submission. Topics covered will include production strategies for storyboarding, animatics and scratch-track creation, budget and scheduling, sound quality, viewing formats, editing and compositing, copyright issues, distribution and final submission to animation festivals. The emphasis will be on digital pre- and post-production concerns useful to all independent animators regardless of their chosen medium.","PeriodicalId":202243,"journal":{"name":"ACM SIGGRAPH ASIA 2008 courses","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129615896","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: 0
Advanced illumination techniques for GPU volume raycasting 高级照明技术的GPU体积光线投射
ACM SIGGRAPH ASIA 2008 courses Pub Date : 2008-12-10 DOI: 10.1145/1508044.1508045
M. Hadwiger, P. Ljung, C. Rezk-Salama, T. Ropinski
{"title":"Advanced illumination techniques for GPU volume raycasting","authors":"M. Hadwiger, P. Ljung, C. Rezk-Salama, T. Ropinski","doi":"10.1145/1508044.1508045","DOIUrl":"https://doi.org/10.1145/1508044.1508045","url":null,"abstract":"Volume raycasting techniques are important for both visual arts and visualization. They allow an efficient generation of visual effects and the visualization of scientific data obtained by tomography or numerical simulation. Thanks to their flexibility, experts agree that GPU-based raycasting is the state-of-the art technique for interactive volume rendering. It will most likely replace existing slice-based techniques in the near future. Volume rendering techniques are also effective for the direct rendering of implicit surfaces used for soft body animation and constructive solid geometry. The lecture starts off with an in-depth introduction to the concepts behind GPU-based ray-casting to provide a common base for the following parts. The focus of this course is on advanced illumination techniques which approximate the physically-based light transport more convincingly. Such techniques include interactive implementation of soft and hard shadows, ambient occlusion and simple Monte-Carlo based approaches to global illumination including translucency and scattering. With the proposed techniques, users are able to interactively create convincing images from volumetric data whose visual quality goes far beyond traditional approaches. The optical properties in participating media are defined using the phase function. Many approximations to the physically based light transport applied for rendering natural phenomena such as clouds or smoke assume a rather homogenous phase function model. For rendering volumetric scans on the other hand different phase function models are required to account for both surface-like structures and fuzzy boundaries in the data. Using volume rendering techniques, artists who create medical visualization for science magazines may now work on tomographic scans directly, without the necessity to fall back to creating polygonal models of anatomical structures.","PeriodicalId":202243,"journal":{"name":"ACM SIGGRAPH ASIA 2008 courses","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134028109","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: 100
Scattering 散射
ACM SIGGRAPH ASIA 2008 courses Pub Date : 2008-12-10 DOI: 10.1145/1508044.1508101
Diego Gutierrez, Srinivasa G. Narasimhan, H. Jensen, W. Jarosz
{"title":"Scattering","authors":"Diego Gutierrez, Srinivasa G. Narasimhan, H. Jensen, W. Jarosz","doi":"10.1145/1508044.1508101","DOIUrl":"https://doi.org/10.1145/1508044.1508101","url":null,"abstract":"Computer graphics and computer vision techniques deal with acquiring, interpreting and presenting the rich visual world around us. These are exciting multi-disciplinary fields of research with a wide spectrum of applications that can impact our daily lives. However, most of the computer generated imagery today represents scenes with clear atmospheres, neglecting light scattering effects. Analogously, most computer vision systems have not enjoyed success when deployed in uncontrolled outdoor environments. Nevertheless, scattering is a fundamental aspect of light transport in a wide range of applications, whether simulating it or interpreting it, from medical imaging to driving simulators or underwater imagery.","PeriodicalId":202243,"journal":{"name":"ACM SIGGRAPH ASIA 2008 courses","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115805021","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
Developing augmented reality applications 开发增强现实应用
ACM SIGGRAPH ASIA 2008 courses Pub Date : 2008-12-10 DOI: 10.1145/1508044.1508048
M. Billinghurst, R. Grasset
{"title":"Developing augmented reality applications","authors":"M. Billinghurst, R. Grasset","doi":"10.1145/1508044.1508048","DOIUrl":"https://doi.org/10.1145/1508044.1508048","url":null,"abstract":"As computers become more invisible, Augmented Reality (overlaying virtual images on the real world) is an increasingly important application area for computer graphics and user interface design. This tutorial will provide a detailed introduction to AR interface design and research, with reviews of topics as such as tracking and registration, interaction techniques, design principles, and usability evaluation, as well as areas for future AR research. Portions of the tutorial will be devoted to the ARToolKit and osgART open-source software tools for building AR applications. Participants will leave knowing how to build AR applications that provide a high quality user experience.","PeriodicalId":202243,"journal":{"name":"ACM SIGGRAPH ASIA 2008 courses","volume":"331 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115974008","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: 12
Mesh parameterization: theory and practice 网格参数化:理论与实践
ACM SIGGRAPH ASIA 2008 courses Pub Date : 2007-08-05 DOI: 10.1145/1508044.1508091
K. Hormann, B. Lévy, A. Sheffer
{"title":"Mesh parameterization: theory and practice","authors":"K. Hormann, B. Lévy, A. Sheffer","doi":"10.1145/1508044.1508091","DOIUrl":"https://doi.org/10.1145/1508044.1508091","url":null,"abstract":"Mesh parameterization is a powerful geometry processing tool with numerous computer graphics applications, from texture mapping to animation transfer. This course outlines its mathematical foundations, describes recent methods for parameterizing meshes over various domains, discusses emerging tools like global parameterization and inter-surface mapping, and demonstrates a variety of parameterization applications.","PeriodicalId":202243,"journal":{"name":"ACM SIGGRAPH ASIA 2008 courses","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133571963","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: 392
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