交互式虚拟内窥镜成像及应用

Interactive volume rendering for virtual endoscopy and its application

目的:作为虚拟内窥镜系统开发的基础性课题,本文针对虚拟内窥镜研究中交互式成像问题展开研究,以求得快速而优质的成像效果。方法:首先提出一种简单直观的坐标变换方法,便于进行交互式的虚拟内窥镜成像。其次,为解决交互式虚拟内窥镜成像的速度问题,使用精简后的光线投射法进行体绘制重建,在使其能够在保证一定图像精度的同时提高速度。结果:实验得到了满意的交互式成像效果。结论:所提出的方法是切实可行的,从而为进一步开发高精度的交互式虚拟内窥镜系统打下了坚实的基础。

Objective: To study the interactive volume rendering for virtual endoscopy, which is a fundamental task of virtual endoscopy system. Methods: An efficient coordinates transform for interactive volume rendering of virtual endoscopy was put forward. We also simplify the resample stage of the ray casting volume rendering to ensure the precision and improve the rendering speed. Results: The experiment showed perfect images of interactive volume rendering for virtual endoscopy.Conclusion:This method is viable and can be used to virtual endoscopy system.