交互式虚拟人脑内窥镜系统关键技术  

Research on key techniques of an interactive human brain virtual endoscopy

作　　者：王怡[1] 朱新懿[1] 周明全[1] 

机构地区：[1]西北大学信息科学与技术学院,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2007年第1期33-36,共4页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(60372072)

摘　　要：目的为解决传统内窥镜方法的缺点。方法设计并开发了一套基于体绘制技术的交互式虚拟人脑内窥镜系统。结果给出了系统主要功能和流程,并且对系统实现中的3项关键技术:虚拟相机模型建立、漫游路径抽取和三维体数据的绘制方法作了详细介绍,改进的光线投射算法使得重建的三维模型图像清晰,绘制效率高。结论系统能够通过手动和自动两种方式进行器官内漫游并生成动画记录,为临床诊断和医学仿真提供了有效地支持。Aim To resolve the deficiency of conventional endoscopy. Methods An interactive human brain virtual endoscopy based on volume rendering is designed and developed. Results The architecture and main functions are described. Three key techniques are also discussed in detail namely, virtual camera modeling, center-line extraction and rendering method. A modified volume rendering algorithm is provided to generate clear images and high speed. Conclusion A manual navigation as well as an automatic navigation methods is proposed to fly-through the interior surface of the organs. Meanwhile a movie is made is effective in clinical treatment and educational training. recording its traveling along the center-line. The system

关 键 词：虚拟内窥镜 中心路径 体绘制 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]