一种数字矿山快速漫游的层次建模方法

A method of level modeling for digital mine's fast roaming

针对虚拟数字矿山中三维场景渲染速度问题,以提高漫游过程细节层次的建模速度为目标,通过对三维场景中各模型的相关性定义,提出了一种快速结构分层建模方法。首先利用漫游场景中规则模型的视点相关性组织细节层次,通过结构分层有效组织和管理矿山漫游三维场景,从而减少场景程序文件容量;其次利用视点相关性提出的动态权系数算法,计算矿山各结构分层动态显示系数;以简单、快速的方式构建动态变化下的场景模型,实现数字矿山各结构块不同细节层次显示的虚拟漫游。实验结果表明,该方法能够有效减小程序文件,实现数字矿山三维场景的快速漫游。

Aiming at the problem of the rendering speed in digital mine and in order to improve the rate of level of detail modeling in Digital Mine roaming, a new fast LOD method based on structure level mod- eling is proposed using the view-depend of model in roaming scene to organize the level of detail. First, organize and manage mine roaming three-dimensional scene effectively using structure level to reduce the total digital mine scene file. Secondly, using the proposed algorithm of dynamic weight coefficient, the dynamic display coefficient of each mine structure block level is calculated. Finally, the 3D scene model of digital mine in dynamic changes can be constructed by a simple and fast way to realize the virtual roa- ming in structure block level. Experimental results show that this method can effectively reduce the pro- ~ram file. and achieve fast roaming for 3 D scene of digital mine.