International Genetic Improvement Workshop最新文献

Packet-based whitted and distribution ray tracing 基于分组的稀疏和分布光线跟踪

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268547

S. Boulos, David Edwards, Dylan Lacewell, J. Kniss, J. Kautz, P. Shirley, I. Wald

{"title":"Packet-based whitted and distribution ray tracing","authors":"S. Boulos, David Edwards, Dylan Lacewell, J. Kniss, J. Kautz, P. Shirley, I. Wald","doi":"10.1145/1268517.1268547","DOIUrl":"https://doi.org/10.1145/1268517.1268547","url":null,"abstract":"Much progress has been made toward interactive ray tracing, but most research has focused specifically on ray casting. A common approach is to use \"packets\" of rays to amortize cost across sets of rays. Whether \"packets\" can be used to speed up the cost of reflection and refraction rays is unclear. The issue is complicated since such rays do not share common origins and often have less directional coherence than viewing and shadow rays. Since the primary advantage of ray tracing over rasterization is the computation of global effects, such as accurate reflection and refraction, this lack of knowledge should be corrected. We are also interested in exploring whether distribution ray tracing, due to its stochastic properties, further erodes the effectiveness of techniques used to accelerate ray casting. This paper addresses the question of whether packet-based ray tracing algorithms can be effectively used for more than visibility computation. We show that by choosing an appropriate data structure and a suitable packet assembly algorithm we can extend the idea of \"packets\" from ray casting to Whitted-style and distribution ray tracing, while maintaining efficiency.","PeriodicalId":197912,"journal":{"name":"International Genetic Improvement Workshop","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127214312","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: 106

GPU-based rendering and animation for Chinese painting cartoon 基于gpu的中国画卡通渲染与动画

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268529

Manli Yuan, Xubo Yang, Shuangjiu Xiao, Zheng Ren

引用次数: 13

Location-dependent information appliances for the home 与位置相关的家庭信息设备

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268543

Kathryn Elliot, Mark Watson, Carman Neustaedter, S. Greenberg

引用次数: 25

Progressive multiples for communication-minded visualization 渐进的倍数为沟通思想的可视化

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268554

Doantam Phan, A. Paepcke, T. Winograd

{"title":"Progressive multiples for communication-minded visualization","authors":"Doantam Phan, A. Paepcke, T. Winograd","doi":"10.1145/1268517.1268554","DOIUrl":"https://doi.org/10.1145/1268517.1268554","url":null,"abstract":"This paper describes a communication-minded visualization called progressive multiples that supports both the forensic analysis and presentation of multidimensional event data. We combine ideas from progressive disclosure, which reveals data to the user on demand, and small multiples [21], which allows users to compare many images at once. Sets of events are visualized as timelines. Events are placed in temporal order on the x-axis, and a scalar dimension of the data is mapped to the y-axis. To support forensic analysis, users can pivot from an event in an existing timeline to create a new timeline of related events. The timelines serve as an exploration history, which has two benefits. First, this exploration history allows users to backtrack and explore multiple paths. Second, once a user has concluded an analysis, these timelines serve as the raw visual material for composing a story about the analysis. A narrative that conveys the analytical result can be created for a third party by copying and reordering timelines from the history. Our work is motivated by working with network security administrators and researchers in political communication. We describe a prototype that we are deploying with administrators and the results of a user study where we applied our technique to the visualization of a simulated epidemic.","PeriodicalId":197912,"journal":{"name":"International Genetic Improvement Workshop","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129629889","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: 24

Should I call now? understanding what context is considered when deciding whether to initiate remote communication via mobile devices 我现在应该打电话吗?了解在决定是否通过移动设备发起远程通信时所考虑的上下文

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268542

Edward S. De Guzman, Moushumi Sharmin, B. Bailey

{"title":"Should I call now? understanding what context is considered when deciding whether to initiate remote communication via mobile devices","authors":"Edward S. De Guzman, Moushumi Sharmin, B. Bailey","doi":"10.1145/1268517.1268542","DOIUrl":"https://doi.org/10.1145/1268517.1268542","url":null,"abstract":"Requests for communication via mobile devices can be disruptive to the current task or social situation. To reduce the frequency of disruptive requests, one promising approach is to provide callers with cues of a receiver's context through an awareness display, allowing informed decisions of when to call. Existing displays typically provide cues based on what can be readily sensed, which may not match what is needed during the call decision process. In this paper, we report results of a four week diary study of mobile phone usage, where users recorded what context information they considered when making a call, and what information they wished others had considered when receiving a call. Our results were distilled into lessons that can be used to improve the design of awareness displays for mobile devices, e.g., show frequency of a receiver's recent communication and distance from a receiver to her phone. We discuss technologies that can enable cues indicated in these lessons to be realized within awareness displays, as well as discuss limitations of such displays and issues of privacy.","PeriodicalId":197912,"journal":{"name":"International Genetic Improvement Workshop","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125420721","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: 55

Surface distance maps 地表距离图

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268525

Avneesh Sud, N. Govindaraju, Russell Gayle, Erik Andersen, Dinesh Manocha

{"title":"Surface distance maps","authors":"Avneesh Sud, N. Govindaraju, Russell Gayle, Erik Andersen, Dinesh Manocha","doi":"10.1145/1268517.1268525","DOIUrl":"https://doi.org/10.1145/1268517.1268525","url":null,"abstract":"We present a new parameterized representation called surface distance maps for distance computations on piecewise 2-manifold primitives. Given a set of orientable 2-manifold primitives, the surface distance map represents the (non-zero) signed distance-to-closest-primitive mapping at each point on a 2-manifold. The distance mapping is computed from each primitive to the set of remaining primitives. We present an interactive algorithm for computing the surface distance map of triangulated meshes using graphics hardware. We precompute a surface parameterization and use the it to define an affine transformation for each mesh primitive. Our algorithm efficiently computes the distance field by applying this affine transformation to the distance functions of the primitives and evaluating these functions using texture mapping hardware. In practice, our algorithm can compute very high resolution surface distance maps at interactive rates and provides tight error bounds on their accuracy. We use surface distance maps for path planning and proximity query computation among complex models in dynamic environments. Our approach can perform planning and proximity queries in a dynamic environment with hundreds of objects at interactive rates and offer significant speedups over prior algorithms.","PeriodicalId":197912,"journal":{"name":"International Genetic Improvement Workshop","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126599188","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: 13

A GPU based interactive modeling approach to designing fine level features 基于GPU的精细关卡特征交互建模方法

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268567

Xin Huang, Sheng Li, Guoping Wang

引用次数: 5

Calligraphic packing 书法包装

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268527

Jie Xu, C. Kaplan

引用次数: 38

Jump: a system for interactive, tangible queries of paper Jump:一个交互式的、有形的纸张查询系统

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268540

Michael A. Terry, Janet Cheung, Justin Lee, Terry Park, N. Williams

{"title":"Jump: a system for interactive, tangible queries of paper","authors":"Michael A. Terry, Janet Cheung, Justin Lee, Terry Park, N. Williams","doi":"10.1145/1268517.1268540","DOIUrl":"https://doi.org/10.1145/1268517.1268540","url":null,"abstract":"This paper introduces Jump, a prototype computer vision-based system that transforms paper-based architectural documents into tangible query interfaces. Specifically, Jump allows a user to obtain additional information related to a given architectural document by framing a portion of the drawing with physical brackets. The framed area appears in a magnified view on a separate display and applies the principle of semantic zooming to determine the appropriate level of detail to show. Filter tokens can be placed on the paper to modify the digital presentation to include information not on the original drawing itself, such as electrical, mechanical, and structural information related to the given space. These filter tokens serve as tangible sliders in that their relative location on the paper controls the degree to which their information is blended with the original document. To address the issue of recognition errors, Jump introduces the notion of a reflection window, or an inset window that serves to reproduce Jump's current interpretation of the visual scene. The system's overall design is informed by a set of in situ studies of architectural technologists and formative evaluations with the same group.","PeriodicalId":197912,"journal":{"name":"International Genetic Improvement Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129712236","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: 23

Can smooth view transitions facilitate perceptual constancy in node-link diagrams? 平滑的视图转换能促进节点链接图中的感知恒常性吗?

International Genetic Improvement Workshop Pub Date : 2007-05-28 DOI: 10.1145/1268517.1268531

M. Shanmugasundaram, Pourang Irani, C. Gutwin

{"title":"Can smooth view transitions facilitate perceptual constancy in node-link diagrams?","authors":"M. Shanmugasundaram, Pourang Irani, C. Gutwin","doi":"10.1145/1268517.1268531","DOIUrl":"https://doi.org/10.1145/1268517.1268531","url":null,"abstract":"Many visualizations use smoothly animated transitions to help the user interact with information structures. These transitions are intended to preserve perceptual constancy during viewpoint transformations. However, animated transitions also have costs -- they increase the transition time, and they can be complicated to implement -- and it is not clear whether the benefits of smooth transitions outweigh the costs. In order to quantify these benefits, we carried out two experiments that explore the effects of smooth transitions. In the first study, subjects were asked to determine whether graph nodes were connected, and navigated the graph either with or without smooth scene transitions. In the second study, participants were asked to identify the overall structure of a tree after navigating the tree through a viewport that either did or did not use smooth transitions for view changes. The results of both experiments show that smooth transitions can have dramatic benefits for user performance -- for example, participants in smooth transition conditions made half the errors of the discrete-movement conditions. In addition, short transitions were found to be as effective as long ones, suggesting that some of the costs of animations can be avoided. These studies give empirical evidence on the benefits of smooth transitions, and provide guidelines about when designers should use them in visualization systems.","PeriodicalId":197912,"journal":{"name":"International Genetic Improvement Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130160254","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: 36