一种优化绘制顺序的光线投射算法

Study on Improve the Ray-casting Algorithm

针对光线投射算法难以满足实时性需求的问题,提出一种光线投射改进算法。该算法把梯度估计、分类与着色、明暗计算过程放置体绘制预处理阶段,减少绘制过程计算任务;简化光照模型,从前向后进行融合运算提前终止融合,避免不必要的计算量。实验结果表明该算法能有效提高光线投射算法的绘制速度。

For real-time ray-casting algorithm can not meet the requirements of the problem,an improved algorithm ray casting.The algorithm of the gradient estimation,classification and coloring,shading calculations placed volume rendering preprocessing stage,a drawing process to reduce the computational tasks;simplified illumination model,from front to back early termination of integration of the fusion operation,avoid unnecessary computation.Experimental results show that the algorithm can effectively improve the rendering speed of light projection algorithm.