| 基于曲面建模的三维地质体体绘制研究 |
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| 引用本文： | 简志坚,戴光明. 基于曲面建模的三维地质体体绘制研究[J]. 计算机工程与设计, 2007, 28(15): 3755-3757,3766 |
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| 作者姓名： | 简志坚 戴光明 |
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| 作者单位： | 中国地质大学,计算机学院,湖北,武汉,430074;中国地质大学,计算机学院,湖北,武汉,430074 |
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| 摘 要： | 体绘制技术因为其相对于面绘制技术能够更好地反映三维体的真实结构,因而越来越受到人们的重视.提出了一种基于曲面建模的地质体体绘制方法,并在此基础上引入原始钻孔点的穷举搜索来获得散乱点以生成曲面.并根据现场数据的特征采用了适合中小型数据量插值拟合计算的改进谢别德插值来实现曲面的生成.产生曲面之后,使用了现在被普遍采用的基于图像空间序的光线投射算法完成地质体的体绘制,并在此基础上实现了剖切,缩放等三维体的交互操作.
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| 关 键 词： | 体绘制 曲面 插值 光线投射算法 地层 |
| 文章编号： | 1000-7024（2007）15-3755-03 |
| 修稿时间： | 2006-08-12 |
Research on volume-rendering of stratum based on surface modeling |
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| JIAN Zhi-jian,DAI Guang-ming. Research on volume-rendering of stratum based on surface modeling[J]. Computer Engineering and Design, 2007, 28(15): 3755-3757,3766 |
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| Authors: | JIAN Zhi-jian DAI Guang-ming |
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| Affiliation: | College of Computer Science and Engineering, China University ofGeosciences, Wuhan 430074, China |
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| Abstract: | Volume-rendering can reflect more details of the volume comparing to surface-rendering,so it becoming more and more im-portant to engineering.An idea that used surface for the volume-rendering of the stratum is brought forward.In order to carry out such technique,the limit search of the disheveled points to imitate the surface is used.Based on the characteristic of the original data,the modified Shepard's method which is suited for the middle scale data to produce the surface is adopted.At last the most popular method which is called ray-casting to produce the volume of stratum is used,and other operations of the volume are also showed. |
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| Keywords: | volume-rendering surface interpolation ray-casting stratum |
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