基于满二叉树分块策略的大规模数据场纹理映射体绘制算法

针对纹理映射体绘制物理内存空间的限制,本文提出一种可在通用图形硬件上完成大规模数据场实时体绘制的有效方法.该方法基于满二叉树纹理分块策略,利用GPU着色器可编程性,将纹理数据制作为一个一维传递函数查找表和一个规模等同于体数据场的动态纹理工作集,有效提高了大规模数据场体绘制的实时性.动态纹理工作集使用抽象分块与继承关系管...

Texture_Based Volume Rendering Using Full Binary Tree Partitioning for Large Datasets

In order to break through the limitation of GPU memory for the traditional texture_based volume rendering,an effective technique utilizing 3D texture partitioning based on full binary tree is presented for rendering large-scale volume datasets interactively on general purpose GPU.Using the Fragment Programming capability of commodity graphics cards,the texture data is transferred to a 1D color lookup table and a working set of dynamic texture datasets equivalent to the volume dataset size.The working set manages the boundaries between blocks with the help of abstract partitioning and inherited attributes.The experimental results show that this method is efficient for rendering large-scale volume datasets at an interactive rate on general purpose PCs.