Automated flight path planning for virtual endoscopy
Automated flight path planning for virtual endoscopy
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DOI：
10.1118/1.598244
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发表时间：
1998-05-01
期刊：
影响因子：
3.8
通讯作者：
Napel, S
中科院分区：
文献类型：
--
作者：
Paik, DS;Beaulieu, CF;Napel, S
本文介绍了一种新的技术，用于快速和自动计算飞行路径引导虚拟内窥镜探索的三维医学图像。虽然手动规划飞行路径是一个繁琐和耗时的任务，我们的算法是自动化和快速。我们的方法定位的虚拟相机是基于中轴变换，但计算效率更高。通过迭代地校正朝向中轴的路径，消除了在形态细化期间评估简单点准则的必要性。虚拟相机也朝向稳定的观看方向，避免突然的扭曲和转弯。我们测试了我们的算法上的体积数据集的八个结肠，一个主动脉和一个支气管树。该算法在一个廉价的工作站上每卷几分钟内计算出飞行路径，通过分支结构的多条路径增加的计算时间最少（每条额外路径增加10%-13%）。我们的算法的结果是顺利的，集中的路径，在虚拟内窥镜探索三维医学图像的导航任务的援助。(C)1998年美国医学物理学家协会。
In this paper, a novel technique for rapid and automatic computation of flight paths for guiding Virtual endoscopic exploration of three-dimensional medical images is described. While manually planning flight paths is a tedious and time consuming task, our algorithm is automated and fast. Our method for positioning the virtual camera is based on the medial axis transform but is much more computationally efficient. By iteratively correcting a path toward the medial axis, the necessity of evaluating simple point criteria during morphological thinning is eliminated. The virtual camera is also oriented in a stable viewing direction, avoiding sudden twists and turns. We tested our algorithm on volumetric data sets of eight colons, one aorta and one bronchial tree. The algorithm computed the flight paths in several minutes per volume on an inexpensive workstation with minimal computation time added for multiple paths through branching structures (10%-13% per extra path). The results of our algorithm are smooth, centralized paths that aid in the task of navigation in virtual endoscopic exploration of three-dimensional medical images. (C) 1998 American Association of Physicists in Medicine.