Collaborative Research: Fast and Accurate Volumetric Rendering of Scattering Phenomena in Computer Graphics

合作研究:计算机图形学中散射现象的快速准确体积渲染

基本信息

  • 批准号:
    0541307
  • 负责人:
  • 金额:
    $ 17.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2006
  • 资助国家:
    美国
  • 起止时间:
    2006-02-15 至 2009-01-31
  • 项目状态:
    已结题

项目摘要

Collaborative Research: Fast and Accurate Volumetric Rendering ofScattering Phenomena in Computer GraphicsReal world scenes often show complex volumetric effects due to scattering of light by particulate media. These effects include some of the most magnificent visual experiences known to man, such as the colors of sunriseand sunset, the brilliant underwater caustics, or even the gloomy weather effects due to fog, mist, haze, rain, snow, and the hazardous effects due to smoke and dust. Realistic visual reproductions of these effects hasbroad impact in various application domains including digital entertainment, scientific education, simulation and training (flying, diving and medical diagnosis), and safety education (underwater explorations and search efforts in smoky and dusty conditions). While there has been a substantial body of work in computer graphics on rendering the effects of volumetric scattering, those methods are usually too slow to enable widespread adoption, taking hours to days to simulate a single scene. This makes it infeasible to include accurate scattering effects in applications like video games, interactive relighting, virtual environments or scientific education.The key insight in this research is that while the explicit numerical simulation of scattering is difficult, its qualitative properties are quite simple, usually just involving a blurring or spreading out of light.The investigators first identify simple configurations (or geometries) of media and sources which frequently occur in scenes. They next develop accurate analytic and data-driven models that describe multiple scattering of light in these configurations based on the theory of radiative transfer. These models are then leveraged in conjunction with Monte Carlo, hardware and precomputation methods, to render volumetric effects at interactive rates in a wide range of dynamic scenes and media. Since analytic or algorithmic techniques can only be as accurate as the underlying representations of scattering properties, a critical part of the research involves designing novel experimental setups to measure a wide array of scattering media for the first time. Finally, this effort includes a significant educational component and promotes collaborativespirit, with new joint courses, exchange student visits, visitinglectures, enriching the experiences of both students and researchers.
合作研究:计算机图形学中散射现象的快速和准确的体积渲染真实世界的场景中,由于颗粒介质对光的散射,经常会显示复杂的体积效果。这些效果包括人类已知的一些最壮观的视觉体验,如日出和日落的颜色,明亮的水下焦散,甚至由于雾、雾、霾、雨、雪造成的阴暗天气效果,以及由于烟雾和灰尘造成的危险影响。这些效果的逼真视觉再现在不同的应用领域产生了广泛的影响,包括数字娱乐、科学教育、模拟和培训(飞行、潜水和医疗诊断)以及安全教育(在烟雾和灰尘条件下进行水下探索和搜索)。虽然计算机图形学在渲染体积散射的效果方面已经做了大量的工作,但这些方法通常太慢,无法广泛采用,模拟一个场景需要几个小时到几天的时间。这使得在视频游戏、交互式重光、虚拟环境或科学教育等应用程序中包含准确的散射效果是不可行的。这项研究的关键见解是,虽然很难对散射进行显式的数值模拟,但其定性属性非常简单,通常只涉及光线的模糊或扩散。研究人员首先确定场景中经常出现的介质和源的简单配置(或几何形状)。他们接下来开发了精确的解析和数据驱动模型,根据辐射传输理论描述了这些配置中的光的多次散射。然后将这些模型与蒙特卡罗、硬件和预计算方法结合使用,以在各种动态场景和媒体中以交互速率渲染体积效果。由于分析或算法技术只能与散射特性的基本表示一样精确,因此这项研究的关键部分涉及设计新的实验装置,以首次测量广泛的散射介质。最后,这一努力包括一个重要的教育组成部分,并促进合作精神,开设新的联合课程、互访学生、互访学生、访问学校和举办讲座,丰富学生和研究人员的经验。

项目成果

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Srinivasa Narasimhan其他文献

Srinivasa Narasimhan的其他文献

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{{ truncateString('Srinivasa Narasimhan', 18)}}的其他基金

CPS: TTP Option: Medium: Discovering and Resolving Anomalies in Smart Cities
CPS:TTP 选项:中:发现并解决智慧城市中的异常情况
  • 批准号:
    2038612
  • 财政年份:
    2020
  • 资助金额:
    $ 17.5万
  • 项目类别:
    Standard Grant
RI: Medium: To Sense or Not to Sense: Energy Efficient Adaptive Sensing for Autonomous Systems
RI:中:感知或不感知:自主系统的节能自适应传感
  • 批准号:
    1900821
  • 财政年份:
    2019
  • 资助金额:
    $ 17.5万
  • 项目类别:
    Standard Grant
Collaborative Research: Computational Photo-Scatterography: Unraveling Scattered Photons for Bio-Imaging
合作研究:计算光散射术:解开生物成像的散射光子
  • 批准号:
    1730147
  • 财政年份:
    2018
  • 资助金额:
    $ 17.5万
  • 项目类别:
    Continuing Grant
CPS: Synergy: TTP Option: Anytime Visual Scene Understanding for Heterogeneous and Distributed Cyber-Physical Systems
CPS:协同:TTP 选项:异构和分布式网络物理系统的随时视觉场景理解
  • 批准号:
    1446601
  • 财政年份:
    2015
  • 资助金额:
    $ 17.5万
  • 项目类别:
    Standard Grant
RI: Medium: Collaborative Research: Recognition of Materials
RI:媒介:协作研究:材料识别
  • 批准号:
    0964562
  • 财政年份:
    2010
  • 资助金额:
    $ 17.5万
  • 项目类别:
    Continuing Grant
CAREER: Making Computer Vision Successful in Scattering Media
职业:使计算机视觉在散射媒体领域取得成功
  • 批准号:
    0643628
  • 财政年份:
    2007
  • 资助金额:
    $ 17.5万
  • 项目类别:
    Continuing Grant

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