中文摘要：

提出一种基于投影式红外标志点的方法用于室内大范围增强现实跟踪注册．设计一种红外投影装置与红外激光发射器配合作为红外标志点发生器．采用红外摄像机采集红外图像，另一摄像机采集真实场景．提出利用解决同时定位与地图生成的SLAM方法，对红外图像进行分析，由一个初始已知标志点开始，跟踪投影在墙面或天花板上的其他红外标志点．由扩展卡尔曼滤波算法得到红外摄像机位姿，进而完成三维注册．实验证明该方法原理可行，能够满足实时跟踪注册的要求．

英文摘要：

A projected infrared marker method is proposed for the large-area indoor augmented reality registration. An infrared projector is designed to accompany the infrared lasers as infrared marker generator. The camera system consists of two cameras. One is used to capture the infrared image with an infrared filter and another is used to gain the real scene. The method for simultaneous localization and mapping（SLAM） can be used in this situation. By analyzing the infrared image, from an initial marker, other markers which are projected on the walls or ceiling can be recognized and tracked to make up a map. From the features, the pose of scene camera can be ascertained by solving the extended Kalman filtering problem and the registration can be completed further. Experimental result demonstrates that the proposed system meets the requirements of accuracy for real-time tracking.