摘要
介绍了基于 Open GL的剪取变换和累加缓存操作而提出的“切片合成法”,其基本原理就是对三维地质模型等间距裁剪一系列“薄片”,然后在帧缓存的累加缓存中进行迭加合成 ,最后生成地质界面的等深线图或剖面系列 ,它避免了裁剪平面与 TIN求交、等值线追踪等繁琐的操作。此方法在三维地质模型可视化、医学断层扫描三维成像等领域都有应用价值。
This paper introduces a new method- 'Slices Synthesis', which is based on OpenGL clip transform and accumulation buffer. The procedure is cutting a serial of slices in equidistant to 3D geology model and add them in accumulation buffer to form a synthesis contour map or a serial profiles. This method dose not need seek join of plane with TIN, trace contour line and so on.This method can be used in 3D geology model visualization and medicine CT 3D visualization.
出处
《测绘科学》
CSCD
2001年第1期30-32,共3页
Science of Surveying and Mapping
基金
国家自然科学基金资助项目! (4 97710 5 9)
