Virtual Videography

虚拟摄像

• 批准号: 0097456
• 负责人: Michael Gleicher
• 金额: $ 38.44万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0097456&HistoricalAwards=false
• 关键词: Virtual; Videography

This is the first year funding of a three year continuing award. Digital video is revolutionizing communication. However, while the technology has provided a means to capture, store, and deliver video, it has not adequately addressed the issue of content creation. Effectively utilizing the medium of video is still a resource- and talent-intensive task. In this proposal, the PI will address this issue by developing Virtual Videography, systems that help automate the production of communicative video. He will develop methodologies that enable events to be recorded with minimal intrusion and processed without expert intervention into informative video. The plan for implementing Virtual Videography is based on the observation that a good portion of the challenge of videography is the range of disparate tasks that a videographer must be proficient at. This traditional decomposition of video into its subtasks suggests a scheme where each task is mimicked by a system component. The PI will develop a software architecture where the traditional video production process has practitioners replaced by software components, and the production pipeline is augmented by a centralized repository for not only video data, but also for annotations about the video's content. Such annotations, created by an image analysis component, will guide: (a) a computational cinematographer in pointing a virtual camera that synthetically created novel views using image-based rendering methods; (b) a virtual editor in selecting shots; and even (c) a virtual effects supervisor in using visual effects to add additional emphasis. The PI will focus his efforts on a specific domain: capturing and presenting university lectures. He will demonstrate a system that automatically processes video recorded by stationary cameras in a lecture hall into edited video, showing multiple viewpoints, editing, and special effects. He will not only develop the technology required to construct such systems, but will also evaluate the utility of the results. This project will contribute insight into how the advanced features of video may be used in pedagogy; it will provide useful tools for disseminating lectures and for educational science research, as well as making technical contributions to the many fields that the effort draws upon.

这是三年连续奖励的第一年资助。数字视频正在彻底改变通信方式。然而，虽然该技术提供了一种捕获、存储和传输视频的方法，但它并没有充分解决内容创建的问题。 有效利用视频媒介仍然是一项资源和人才密集型任务。 在本提案中，PI 将通过开发虚拟摄像系统来解决这个问题，该系统有助于自动化制作交流视频。 他将开发一些方法，使事件能够以最小的干扰进行记录和处理，而无需专家干预信息视频。 实施虚拟摄像的计划是基于这样的观察：摄像挑战的很大一部分是摄像师必须精通的不同任务的范围。 这种将视频传统分解为其子任务的方案提出了一种方案，其中每个任务都由系统组件模仿。 PI 将开发一种软​​件架构，其中传统视频制作流程的从业者被软件组件所取代，并且制作流程将通过一个集中存储库来增强，该存储库不仅可以存储视频数据，还可以存储有关视频内容的注释。 由图像分析组件创建的此类注释将指导：（a）计算电影摄影师指向虚拟摄像机，该虚拟摄像机使用基于图像的渲染方法综合创建新颖的视图； (b) 虚拟编辑器选择镜头；甚至（c）虚拟效果总监使用视觉效果来增加额外的强调。 PI 将把精力集中在一个特定领域：捕捉并呈现大学讲座。 他将演示一个系统，该系统可以自动将演讲厅中固定摄像机录制的视频处理为经过编辑的视频，显示多个视点、编辑和特效。 他不仅将开发构建此类系统所需的技术，还将评估结果的效用。 该项目将深入了解如何在教学中使用视频的高级功能； 它将为传播讲座和教育科学研究以及为该努力所利用的许多领域做出技术贡献提供有用的工具。