摘要
用X-CT设备对被检测物体扫描后获得了一系列的二维图像,然后通过计算机图形图像学中的可视化技术从这些二维图像中重建出物体内部的三维结构。这正成为无损检测中一项重要的技术。而重建被检测物体的任意剖面的技术正是三维可视化技术的重要组成部分。本文在总结以前绘制物体任意剖面的众多方法基础上,对其中主要两种任意剖面方法进行深入探讨和比较研究,针对绘制曲面剖面的重采样困难,并结合基于体元的剖面直接生成方法的内在特点,在不影响剖面图像质量的前提下,提出了绘制曲面剖面的近似方法,而且使用数据预处理技术对其算法进行改进,大大提高了运算速度,达到实时绘制的要求。这改进的方法不仅能够绘制任意平面剖面,而且能够绘制包括球面等曲面剖面,因而它具有良好的扩展性和广阔的应用前景。
The 3D visualization technology is applied to the reconstruction and the representation of the objects inner structures from a series of 2D images which composing a 3D data-set, derived from X-CT. The reconstruction of arbitrary sections acts as one of the important parts of the visualization technology. It has two methods: 3D-coordinate-transformation method and Cube-based method. This paper presents an improved Cube-based method, which can approximatively reconstruct the curved planes more easily than the former. This improved method also spend less computing time than the unimproved one. Thus it has good expansibility and extensive application.
出处
《中国体视学与图像分析》
2003年第2期101-104,共4页
Chinese Journal of Stereology and Image Analysis
基金
国家自然科学基金资助项目(批准号10135040)
关键词
可视化技术
任意剖面
曲面剖面
插值
Visualization Technology
Arbitrary Sections
Curved Planes
Interpolation
