CAREER: Closed-Loop Augmented Environment Systems

研究部分：关闭 AE 系统的循环。 该项目通过新的“统一系统”方法进行 AE 系统设计，解决增强环境 (AE) 和虚拟环境 (VE) 跟踪系统的不足之处。即使拥有最好的头戴式显示器 (HMD) 和图形系统，跟踪系统的缺点也会阻碍或妨碍许多 AE/VE 应用程序的实用性。此类应用，包括在线手术可视化、组装或维护辅助以及交互式培训模拟，需要针对以下问题提供可靠的解决方案。 1）实现毫米（位置）和0.1度（方向）精度。 2）轻松实现跟踪系统对现实世界的精确校准。 3) 消除（或最小化）跟踪（和图形）系统中的延迟，以防止头部运动期间出现严重错位。 该项目旨在开发新技术和改进方法，使基于视频的 AE 系统在商业和科学应用中可用且高效。 长期研究目标是在所有用户活动条件（包括快速头部运动）下，在增强环境中准确对齐真实和虚拟对象。 要实现这样的性能，需要将新的图像和跟踪功能组件集成到 AE 系统中。 2D 对准误差度量构成了补偿各种 3D 跟踪和校准误差的基础。 在每一帧上计算并应用校正，创建一个闭环系统，补偿静态和动态（延迟引起的）错位。 该项目将通过以下方式增进对闭环 AR 系统的理解：1) 实施软件模拟器，以促进快速探索用于特征检测误差测量和误差补偿的闭环 AE 系统设计选项；2) 设计新的 AE 系统架构，其组件与系统中的其他组件具有简单、定义明确的接口；3) 开发完整闭环 AE 系统的原型并量化其性能特征。 教育部分：通过经验更丰富的理解。 教学职责包括每个秋季和春季学期至少一门课程。 面向研究生的两门计算机图形学课程正在开发中。 这些课程以本科导论课程为基础，强调项目创建。 为学生提供适当水平的系统构建学习机会是教育活动的重点。 除了教学大纲设计和课堂教学之外，定向研究和建议还促进学生与教师的互动。 将为入门级和高级级开发一张包含图形概念的计算机图形模拟的 CD-ROM。

Research Component: Closing the loop in AE systems. The project addresses augmented environment (AE) and virtual environment (VE) tracking system inadequacies through a new `unified-system` approach to AE system design. Even with the best head-mounted displays (HMDs) and graphic systems available, the shortcomings of tracking systems hinder or preclude the usefulness of many AE/VE applications. Such applications, including on-line surgical visualization, assembly or maintenance assistance, and interactive training simulations, require robust solutions to the following problems. 1) Achieving millimeter (position) and 0.1 degree (orientation) accuracy. 2) Readily achieving precise calibration of tracking systems to the real world. 3) Eliminating (or minimizing) latency in tracking (and graphics) systems to prevent gross misalignment during head motion. This project aims to develop new technology and improved methods for making video-based AE systems usable and productive for commercial and scientific applications. The long term research goal is the accurate alignment of real and virtual objects in an augmented environment under all conditions of user activity including rapid head motion. Achieving such performance required the integration of new image and tracking function components into an AE system. A 2D alignment error metric forms a basis for the compensation of a variety of 3D tracking and calibration errors. Corrections are computed and applied at every frame creating a closed loop system which compensated for both static and dynamic (latency-induced) misalignment. The project will produce increased understanding of closed loop AR systems by 1) implementing a software simulator to facilitate rapid exploration of closed loop AE system design options for feature detection error measurement, and error compensation, 2) designing a new AE system architecture with components which have simple, well-defined interfaces to other co mpenents in the system, and 3) developing a prototype of a complete closed-loop AE system and quantifying its performance characteristics. Education Component: Richer understanding through experience. Teaching responsibilities include at least one course during each Fall and Spring semester. A two-course Computer Graphics sequence for graduate students is under development. These courses build on the introductory undergraduate course and emphasize project creation. Hands on system-building learning opportunities, at the appropriate levels for students, are a major focus of the educational activities. In addition to syllabus design and class teaching, directed-research and advising promotes student-faculty interactions. A CD-ROM with computer graphics simulations of graphics concepts will be developed for both introductory and advanced levels.