用图象空间为序的体绘制技术显示三维数据场

VISUALIZATION OF 3D DATA SETS WITH IMAGE ORDER VOLUME RENDERING TECHNIQUES

本文首先简要介绍了应用体绘制技术显示三维空间数据场的基本原理．接着，提出并实现了经过改进的图象空间为序的体绘制算法，该算法以重构三维空间数据场代替了原有的重构光亮度场的方法，从而提高了图象质量并节约了存储空间．最后，介绍了用图象空间为序的体绘制技术显示多等值面的算法及其研究结果，并讨论了提高该算法效率的途径．

After a brief introduction of volume rendering techniques for visu alizing 3D data sets, this paper presents a new image order volume rendering method which reconstructs the 3D continuous field from the original discrete data instead of the 3D shading value. It improves the image quality and reduces the memory space. Then, an algorithm for visualizing multi-isosurfaces with image order volume rendering is described and the methods to improve the algorithm's efficiency are also discussed.