基于局部渲染的高精度模型自适应展示技术

Adaptive display technology of high precision model based on local rendering

为了提高在普通计算机上渲染复杂三维模型时的模型解析效率,同时提升渲染速度,提出基于局部渲染的硬件自适应展示方案.三维模型被分块后存储到关系型数据库中,在距离模型较近的情况下渲染时,根据实际的视角使用视点依赖的分块匹配算法从数据库中匹配出适量的分块模型数目进行局部渲染,并且随着视角的变换加载不同的分块;当视角距离较远时,预先已经保存好采用模型简化技术简化后的模型整体,直接对模型整体进行渲染展示.实验结果表明,此方法能够在普通的计算机上流畅地展示带有高清纹理贴图的三维模型,有效降低渲染复杂模型时对硬件条件的依赖.

A hardware-based display scheme based on local rendering was proposed to speed up the loading efficiency of complex three-dimensional model on ordinary computer and improve the rendering speed. The three-dimensional model was stored in the relational database after it was sliced. While rendering at close range, moderate amounts of meshes were loaded to rendering according to the actual viewing angle and different meshes were loaded with the transformation of the angle of view; in the distance way, a simplified model was loaded to display because the simplified whole model by the level of detail technology was saved in advance. The experimental results show that the proposed scheme makes the three-dimensional model with high-definition texture be rendered smoothly on the ordinary computer, which effectively reduces the dependence on higher hardware conditions while rendering complex model.