SBIR Phase I: High Performance Three Dimensional Mouse and Head Tracker

SBIR 第一阶段：高性能三维鼠标和头部跟踪器

• 批准号: 9661576
• 负责人: Daniel DeMenthon
• 金额: $ 7.5万
• 依托单位: Dynaflow Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9661576&HistoricalAwards=false
• 关键词: SBIR; Phase; Performance; Three; Dimensional

*** 9661576 DeMenthon This Small Business Innovation Research Phase I project will test a novel instrument for tracking the hand and the head of a subject, and has particular application to user-system interfaces for interactive 3D graphics and virtual reality. A novel optical tracker using infrared Light Emitting Diodes (LEDs) mounted on the hand and head of the user and a fixed camera equipped with a position sensing diode (PSD) will be developed. The system will modulate each LED at a distinct characteristic frequency from several kHz to several hundred kHz. The contributions from the LEDs to the PSD signal will all be measured simultaneously and separated by digital filters, each tuned to extract the contribution of a single LED. Sunlight and incandescent light sources do not produce components in the kHz range and will be rejected by high pass filters. This design will obtain accurate translation and rotation measurements at high rate, and with a low phase lag during rapid hand or head motion. The proposed technology will result in the development of optical tracking systems which perform reliably in unconstrained lighting environments, while providing high update rates and high responsiveness. Potential commercial applications include 3D mouse systems and Head Mounted Display trackers for the interactive 3D graphics market, the simulator market, and the entertainment market. ***

*** 9661576 DeMenthon这个小企业创新研究第一阶段项目将测试一种用于跟踪受试者的手和头部的新仪器，并特别应用于交互式3D图形和虚拟现实的用户系统界面。将红外发光二极管（led）安装在用户的手上和头上，并安装有位置感应二极管（PSD）的固定摄像机，开发一种新型光学跟踪器。该系统将以几个千赫到几百千赫的不同特征频率调制每个LED。LED对PSD信号的贡献将全部同时测量，并通过数字滤波器分离，每个滤波器调到提取单个LED的贡献。太阳光和白炽灯光源不会产生千赫范围内的元件，并且会被高通滤波器拒绝。这种设计将以高速率获得准确的平移和旋转测量，并且在快速手部或头部运动时具有低相位滞后。提出的技术将导致光学跟踪系统的发展，该系统在无约束的照明环境中可靠地运行，同时提供高更新率和高响应性。潜在的商业应用包括3D鼠标系统和头戴式显示器跟踪器，用于交互式3D图形市场、模拟器市场和娱乐市场。＊＊＊