体素分类与Phong光照模型GPU加速体绘制

为了提高体绘制的速度和效果,研究了体数据的分类和计算及其在图形处理单元上加速实现的体绘制算法.分别采用点体素先分类和预积分后分类方法为体数据分配颜色和不透明度,改进了利用不透明度对颜色加权改善绘制效果,根据Phong光照模型对体数据进行渲染.通过查找表软件加速和图形处理单元硬件加速两个方面分别实现并进行比较,实验结果表明,采用图形硬件加速的方法达到实时交互的效果,体绘制性能大大提高.

Volume classification and GPU-accelerated volume rendering of Phong optical model

To improve speed and effect of volume rendering,volume data classification and calculation of volume rendering on graphic processing unit(GPU) is studied.Firstly,point-based and pre-integrated classification are applied relatively,it allocated color and opacity for every volume data and color interpolated with opacity-weight in order to improve rendering effect,then volume data are ren-dered with Phong optical model.At the same time software acceleration with look up table and graphic hardware acceleration ...